Grandstream Networks, Inc.
GXP21xx SIP Enterprise Phones
Grandstream Networks, Inc.
GXP21xx User Manual
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Table 9: LCD Icons...................................................................................................................12
Table 10: GXP21xx Keypad Buttons.........................................................................................12
Table 11: GXP Call Features ....................................................................................................19
Table 12: Key Pad Configuration Menu.....................................................................................20
Table 13: Device Configuration - Status....................................................................................24
Table 14: Device Configuration – Settings/Basic Settings..........................................................24
Table 15: Device Configuration – Settings /Advanced Settings..................................................27
Table 16: SIP Account Settings.................................................................................................32
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GXP21xx User Manual
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Welcome
Your Grandstream GXP21xx Enterprise IP phone is feature-enriched, sophisticated, yet simple to use.
The GXP21xx delivers superior HD audio quality, rich and leading edge telephony features, personalized
information and customizable application service, automated provisioning for easy deployment, advanced
security protection for privacy, and broad interoperability with most 3rd party SIP devices and leading
SIP/NGN/IMS platforms.
The GXP21xx supports a broad range of codecs, security protection, PoE, dual 10/100mbps Ethernet
ports, along with customizable XML provisioning and application features. Users can expect superior
audio quality using the new high definition handset, hands-free speakerphone, or headset. Also, it can
support up to 5-way conferencing, multi-languages, dual-color LEDs, presence and Busy Lamp Field
(BLF). It presents a large easy-to-read backlit graphical display along with multiple XML keys to further
enhance the user experience. The GXP2120/2110 is also expandable with one to two expansion modules.
The GXP21xx is a perfect choice for enterprise users looking for a high quality, feature rich multi-line IP
phone with the best values.
Caution: Changes or modifications to this product not expressly approved by Grandstream, or operation
of this product in any way other than as detailed by this User Manual, could void your manufacturer
warranty.
Warning: Please do not use a different power adaptor with the GXP21xx as it may cause damage to the
products and void the manufacturer warranty.
•
•
This document is subject to change without notice. The latest electronic version of this user manual is
available for download from: http://www.grandstream.com/support
Reproduction or transmittal of the entire or any part, in any form or by any means, electronic or print,
for any purpose without the express written permission of Grandstream Networks, Inc. is not
permitted.
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GXP21xx User Manual
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Installation
EQUIPMENT PACKAGING
Table 1: Equipment Packaging
GXP2120
GXP2110
Yes
GXP2100
Main Case
Handset
Phone Cord
Power Adaptor
Ethernet Cable
High Phone Stand
Low Phone Stand
Wall Mount Spacers (2)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Wall Mount stand
CONNECTING YOUR PHONE
The connectors of the GXP21xx are located on the bottom of the device.
Table 2: GXP21xx Connectors
Connect the GXP Extension unit directly to GXP2110/2120 using connection
EXT
PC
cable. Draw power from PoE if provided by network. (Not applicable on GXP2100)
10/100Mbps RJ-45 ports for PC (downlink) connection.
10/100Mbps RJ-45 port for LAN (uplink) connection. Supports PoE (802.3af).
Draws power from either spare line or signal line.
LAN
Power Jack
5V DC power port; UL Certified
RJ9 and 2.5mm
RJ9
Headset Jack
Handset Jack
GXP2120/2110 EXTENSION UNIT
GXP2120/2110 supports two (2) extension units, providing up to 112 additional programmable extensions.
Each GXP Extension unit has 56 multi-purpose keys, dual color LEDs (red/green) and support BLF (Busy
Lamp Field) and Presence.
GXP2120/2110 Extension package contains:
1) 1 GXP Extension unit
2) 2 connection cables
3) 1 universal power adaptor
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FIGURE 1: CONNECTING THE GXP2120/2110 AND THE GXP EXTENSION
GXP2120 with GXP Extension
GXP Extension
Connecting the GXP2120/2110
to GXP Extension
Reverse side of connection with
connection plate
GXP2120/2110 has a special port on
the back.
Reverse side of connection w/connection
plate
Connect the first GXP EXT to the GXP2120/2110 using the connection cable found in the GXP Extension
package. The first GXP EXT draws power directly from the phone. Connect the second GXP Extension unit
using the connection plate and the connection cable. The GXP2120/2110 will automatically reboot and
power up the GXP Extensions. Grandstream recommends, though not required, to use a separate power
supply with the second GXP EXT.
NOTE: Should your system lose power, please unplug your devices and power up the GXP2120/2110 first.
Powering up the system:
1. The GXP2120/2110 will boot up first;
2. The GXP2120/2110 LEDs will be solid red;
3. The status light in the top right corner of the GXP Ext will blink in red;
4. All of the LED indicators on the GXP Ext will flash three times;
5. The status light at the top right corner of the GXP Ext will turn to solid green.
NOTE:
1. Extension for GXP2120/2110 is the same for GXP2020/2010 models. However, GXP2120/2110
uses a different-shaped connector for the special port (as shown above). Extension cables will be
included with the extension board.
2. Extension for GXP2120/2110 does not support hot-swap. Once connected, user should reboot the
phone to ensure the set up will work correctly.
3. GXP2120/2110 can drive 2 extension modules. Independent power adapters are not needed for
extension modules.
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SAFETY COMPLIANCES
The GXP21xx complies with FCC/CE and various safety standards. The GXP21xx power adaptor is
compliant with the UL standard. Only use the universal power adaptor provided with the GXP21xx package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power adaptors.
WARRANTY
If you purchased your GXP21xx from a reseller, please contact the company where you purchased your
phone for replacement, repair or refund. If you purchased the product directly from Grandstream, contact
your Grandstream Sales and Service Representative for a RMA (Return Materials Authorization) number
before you return the product. Grandstream reserves the right to remedy warranty policy without prior
notification.
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Product Overview
Table 3: GXP21xx Product Models
Overview
Model
Picture
GXP2120 is an executive SIP phone. It features:
Six lines
GXP2120
Seven programmable hard keys
Four XML programmable soft keys
GXP2110 is an executive SIP phone. It features:
Four lines
Eighteen programmable hard keys
Three XML programmable soft keys
GXP2110
GXP2100 is an executive SIP phone. It features:
Four lines
Seven programmable hard keys
Three XML programmable soft keys
GXP2100
Table 4: GXP21xx Comparison Guide
Features
GXP2120
GXP2110
240x120 pixel
GXP2100
LCD Display
320x160 pixel
180x90 pixel
Number of Lines
Programmable Hard Keys
Programmable Soft Keys
Extension Module
6
7
4
4
4
7
3
18
3
Yes, up to 2 Expansion Yes, up to 2 Expansion N/A
Modules, 56 nodes each Modules, 56 nodes each
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Table 5: GXP21xx Key Features in a Glance
Features
Benefits
Open Standards Compatible
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP,
ICMP, DNS (A record, SRV and NAPTR), DHCP (both client and server),
PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, SIP over TLS, 802.1x,
TR-069
Superb Audio Quality
Advanced Digital Signal Processing (DSP), Silence Suppression, VAD,
CNG, AGC
Network Interfaces
Feature Rich
Dual 10/100mbps Ethernet ports with integrated PoE
Traditional voice features including caller ID, call waiting, hold, transfer,
forward, block, auto-dial, off-hook dial
Advanced Features
Multi-line support with dual-color LED, multi-party conferencing, line
extension interface, large backlit graphic LCD, 4 navigation keys,
dedicated buttons for hold, send/redial, speakerphone, headset, transfer,
conference (for up to 5 parties depending on model), mute, message, Do-
Not-Disturb, phone book, intercom
Advanced Functionality
Customized downloadable ring-tones, SRTP, SIP over TLS, multi-
language support and XML enabled, adjustable positioning angles, wall
mountable, AES encryption, automatic multimedia service (eg., weather
information)
Table 6: GXP21xx Hardware Specifications
Model
GXP2120
GXP2110
GXP2100
LAN Interface
(Ethernet ports)
Two (2) 10/100 Mbps Full/Half Duplex Ethernet Switch with LAN and PC port with auto
detection
Graphic LCD
Display
320x160 pixel
240x120 pixel
180x90 pixel
Expansion
Yes
No
Module Support
Headset Jack
2.5mm and RJ9
22 Dual color (green/red)
Call Appearance
LED
13 Dual color (green/red)
11 Dual color (green/red)
Power over
Ethernet
Built-in auto-sensing: Cisco and IEEE 802.3af standard
Universal
Switching
Input: 100-240VAC 50-60 Input: 100-240VAC 50-60 Input: 100-240VAC 50-60
Hz
Output: +5VDC, 800mA, Output: +5VDC, 800mA, Output: +5VDC, 800mA,
UL certified UL certified UL certified
251mm(W) x 202mm(L) x 252mm (W) x 210mm (L) x 222mm (W) x 210mm (L)
Hz
Hz
Power Adaptor
Dimension
77mm(H)
78mm (H)
x 93mm (H)
Weight
1.66KG (3.64lbs)
1.78KG (3.92lbs)
32 –104° F/ 0 – 40°C
1.63KG (3.59lbs)
Temperature
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Humidity
10% – 90% (non-condensing)
FCC / CE / C-Tick
Compliance
Table 7: GXP21xx Technical Specifications
Lines
Multiple direct lines with independent SIP accounts, programmable speed dial
keys,
XML programmable soft-keys
Protocol Support
Support SIP 2.0, TCP/UDP/IP, PPPoE, RTP/RTCP, SRTP by SDES, HTTP,
ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SIMPLE/PRESENCE protocols,
TR-069, 802.1x
Support multiple SIP accounts and up to 11 media channels concurrently
Support SIP PUBLISH method (RFC 3903), SIP Presence package (RFC
3856, 3863) for use of MFKs, SIP Dialog package (RFC 4235)
Support for SIP MESSAGE method (RFC 3428)
Backlit graphic LCD display, up to 8 level grayscale
Display
Feature Keys
Feature keys on different models:
GXP2120 GXP2110 GXP2100
HOLD
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
SPEAKERPHONE Yes
SEND
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
TRANSFER
CONF
MUTE
DND
HEADSET
INTERCOM
PHONEBOOK
MSG
Yes
Yes
Yes
Yes
Yes
Yes
MENU
NAVIGATION (4)
Device Management
Audio Features
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed devices
including behind firewall/NAT
Auto/manual provisioning system, Web GUI Interface
Expansion interface, Address Book
Full-duplex hands-free speakerphone, headset enabled
Advanced Digital Signal Processing (DSP)
Dynamic negotiation of codec and voice payload length
Support for G.723,1 (5.3/6.3K), G.729A/B, G.711 a/µ-law, G.726-32, G.722
(wide-band), and iLBC codecs
In-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Silence Suppression, VAD (voice activity detection), CNG (comfort noise
generation), ANG (automatic gain control)
Acoustic Echo Cancellation (AEC) with Acoustic Gain Control (AGC) for
speakerphone mode, Support side tone
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Adaptive jitter buffer control (patent-pending) and packet delay & loss
concealment
HD audio handset with HD wideband audio codecs for excellent double-talk
performance.
Telephony Features
Intuitive graphic user interface (GUI), downloadable phone book (XML, LDAP),
support for anonymous call using privacy header, MLS (multi-language
support)
Voice mail indicator, downloadable custom ring-tones, call hold, call transfer
(attended/blind), call forward, call waiting, caller ID, mute, redial, call log, caller
ID display or block, Do-Not-Disturb (DND) and volume control
Multi-party conferencing (up to 5), dial plan prefix, dial-plan support, off-hook
auto dial, auto answer, early dial and speed dial
Network and
Provisioning
Via keypad/LCD, Web browser, or secure (AES encrypted) central
configuration file, manual or dynamic host configuration protocol (DHCP)
network setup
Support NAT traversal using IETF STUN and Symmetric RTP
Support Layer 2 (802.1Q, VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ,
MPLS)
Firmware Upgrades
Support firmware upgrade via TFTP or HTTP
Support for Authenticating configuration file before accepting changes
User specific URL for configuration file and firmware files
Mass provisioning using TR-069 or encrypted XML configuration file
Advanced Server
Features
Message waiting indication, support DNS SRV Look up and SIP Server Fail
Over, Support customizable idle screen via downloading XML by HTTP/TFTP
Security
User and administrator level passwords, MD5 and MD5-sess based
authentication, AES based secure configuration file, SRTP, TLS, 802.1x
media access control
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Using the GXP21xx SIP Enterprise Phone
GETTING FAMILIAR WITH THE LCD
GXP21xx has a dynamic and customizable screen. The screen displays differently depending on whether the
phone is idle or in use (active screen).
Table 8: LCD Buttons
Key Button
Key Button Definitions
LINE SELECTORS
Selects the phone line printed on its right-hand side.
Displays the current date and time. Can be synchronized with Internet time
servers.
DATE AND TIME
LOGO
Displays company logo name. This logo name can be customized via xml screen
customization.
Displays the status of the phone and network. It will indicate whether the network
is down, starting or running (IP address). “## MISSED CALLS” is shown here too.
NETWORK STATUS
STATUS BAR
Shows the status of the phone, using icons as shown in the next table.
Displays the name of the account that is in use. Select another account by
pressing the LINE key on the left side.
LINE STATUS INDICATOR
The softkeys are context sensitive and will change depending on the status of the
phone. Typical functions assigned to softkeys are:
•
FORWARD ALL Unconditionally forwards the phone line to another
phone
•
MISSED CALL This option shows up there were unanswered calls to
this phone. The Missed Calls option shows a list of the
missed calls
SOFTKEYS
•
NEXTSCR
Press this button to toggle between idle screen, weather
and IP Address.
•
•
REDIAL
Redials the last number
Hangs up phone
END CALL
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Call Parking: FOR GXP2120/GXP2110 ONLY. Refer to the GXE5024/5028
Online User Manual for more information.
•
CallPark
When a GXP2120 dials out, the Call Park softkey
will display on screen. To park the call, press the
“Call Park” button.
•
PickUp
When another GXP2120 goes off-hook the Call
Pickup softkey will display on screen. To pickup
the parked call, press the “Call Pickup” button.
SPECIAL SOFTKEYS (Only
When Integrated with
GXE5024/5028)
Call Queue: FOR GXP2120/2110 ONLY. Refer to the GXE5024/5028 Online
User Manual for more information.
•
SignIn
Press this button to sign in to the call queue. Agent will
be prompted in the LCD display to select the call queue
to join. Press “menu” button on keypad to select “ok”.
Once the agent completely signs in, the agent will be
brought back to the main screen.
•
SignOut
Press this button to sign out of the call queue. Press
“menu” button on keypad to select “ok”. This will be
displayed once the agent is signed in to the call queue.
Table 9: LCD Icons
Icon LCD Icon Definitions
DND Icon: ON when the “Do Not Disturb” is activated
Calls Forwarded Icon: INDICATES calls are forwarded
Voice Mail / Message Waiting Indicator: ON when there is new voice mail
/ message
Network Status: Network is down
Missed Call Icon: Indicates missed call(s)
Save Call Record: Indicates phone system writing the call records into the
flash. It might take 10 to 20 seconds to finish the process
Table 10: GXP21xx Keypad Buttons
Key Button
LINE KEYS
HOLD
Key Button Definitions
2 Line keys with LED, can be configured to different SIP profiles
Place ACTIVE call on hold
SEND
Press to dial out the number or redial when the phone is idle
Transfer an ACTIVE call to another number
TRANSFER
CONF
Press CONF button to connect Calling/Called party into conference
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MUTE
Mute an active call
Press HEADSET key to answer/hang up phone calls while using headset. It
also allows user to toggle between headset and speaker
HEADSET
DND
Enable/Disable DND. (Not applicable on GXP2100)
INTERCOM
Press to use intercom if intercom user ID is configured in web GUI
Press to enter menu when phone is in idle. Use it as ENTER key in keypad
configuration
MENU
Enter to retrieve voice mails or other messages
Brings phonebook on screen
Enable/Disable hands-free speaker
Enable/Disable handset mode ; or used as SEND/REDIAL
-Navigation keys “Up” “Down” “Left” “Right”. Press to navigate in menu
options
-During the call, press “Up” “Down” to adjust volume
-When the phone is idle, press “Up” to view missed call; press “Down” to view
phonebook
Standard phone keypad; press # key to send call; press * key to for IVR
functions
0 – 9, *, #
18 MPKs in GXP2110 and 7 MPKs in GXP2120 used for BLF, Speed dial
and etc
Multi Purpose Keys
MAKING PHONE CALLS
Handset, Speakerphone and Headset Mode
The GXP21xx allows you to make phone calls via handset, speakerphone, or headset mode. During the
active calls the user can switch between the handset and the speaker by pressing the speaker key. For
headsets to operate, the user must plug the headset to an RJ9 or 2.5mm port on the phone, which allows the
user to pick-up, speak, or hang-up calls.
Multiple SIP Accounts and Lines
GXP2120 can support up to 6 independent SIP accounts; GXP2110/GXP2100 can support up to 4
independent SIP accounts. Each account is capable of independent SIP server, user and NAT settings. Each
of the line buttons is “virtually” mapped to an individual SIP account. The name of each account is
conveniently printed next to its corresponding button. In off-hook state, select an idle line and the name of
the account (as configured in the web interface) is displayed on the LCD and a dial tone is heard.
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For example: Configure ACCOUNT 1 and ACCOUNT 2 with Account Name as “VoIP 1”, “VoIP 2”,
respectively and ensure that they are active and registered. When LINE1 is pressed, you will hear a dial tone
and see “VoIP 1” on the LCD display; when LINE2 is pressed, you will hear a dial tone and see “VoIP 2” on
the LCD display.
To make a call, select the line you wish to use. The corresponding LINE LED will light up in green. User can
switch lines before dialing any number by pressing the same LINE button one or more times. If you continue
to press a LINE button, the selected account will circulate among the registered accounts.
For example: when LINE1 is pressed, the LCD displays “VoIP 1”; If LINE1 is pressed twice, the LCD
displays “VoIP 2” and the subsequent call will be made through SIP account 2.
Incoming calls to a specific account will attempt to use its corresponding LINE if it is not in use. When the
“virtually” mapped line is in use, the GXP will flash the next available LINE (from left to right or from top to
bottom for Multi Purpose Keys) in red. A line is ACTIVE when it is in use and the corresponding LED is red.
Completing Calls
There are five ways to complete a call:
1. DIAL: To make a phone call.
•
Take Handset/SPEAKER/Headset off-hook
or press an available LINE key (activates speakerphone)
or press the NEW CALL soft-key.
•
The line will have a dial tone and the primary line (LINE1) LED is red.
If you wish, select another LINE key (alternative SIP account).
Enter the phone number
Press the SEND key
or press the “DIAL” soft-key.
•
•
2. REDIAL: To redial the last dialed phone number.
When redialing the phone will use the same SIP account as was used for the last call. Thus, when
the third SIP account was made for the last call/call attempt, the phone will use the third account to
redial.
•
•
Press SEND key directly to redial or
Take Handset/SPEAKER/Headset off-hook or
press an available LINE key (activates speakerphone), the corresponding LED will be red.
Press the SEND button
•
or press the REDIAL soft-key.
3. USING CALL HISTORY: To call a phone number in Call History
When using the call history, the phone will use the same SIP account as was used for the last
call/call attempt. Thus, when returning a call made to the third SIP account, the phone will use the
third SIP account return the call.
•
•
Press the MENU button to bring up the Main Menu.
Select Call History and then “Answered Calls” “Dialed Calls”, “Missed Calls” “Transferred
Calls” or “Forwarded Calls” depending on your needs
•
•
•
Select phone number using the arrow keys
Press OK to select
Press OK again to dial.
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4. USING THE PHONEBOOK: To call a phone number from Phonebook
Each entry in the phonebook can be attached to an individual SIP account. The phone will use that
SIP account to make the phone call.
•
Go to the phonebook by:
i. Pressing the phonebook button (bottom, left-hand side of phone), or
ii. Pressing the DOWN arrow key, or
iii. Pressing the menu button and selecting “Phone book”
iv. Pressing MENU
•
•
•
Select the phone number by using the arrow keys
Press OK so select
Press OK again to dial.
5. PAGING/INTERCOM:
The paging/intercom function can only be used if the SERVER/PBX supports this feature and both
the phones and PBX are correctly configured.
•
•
•
•
•
Take the Handset/SPEAKER/Headset off-hook
Select the LINE key associated with account
Press OK key to display LCD: LINEx: PAGE.
Dial the phone number you want to Page/Intercom
Press SEND key.
NOTE: Dial-tone and dialed number display occurs after the handset is off-hook and the line key is selected.
The phone waits 4 seconds (by default; No key Entry Timeout) before sending and initiating the call. Press
the “SEND” or “#” button to override the 4 second delay.
Speed Dial
The Multi Purpose Key buttons, located on the right-hand-side of the phone, can be configured for speed
dial. Press the speed dial button to automatically call the assigned extension.
Note: The multi-functional buttons will function as LINE keys when all LINEs are busy. The LED will flash in
red to indicate an incoming call. Press the button to pick up the call. If any one of the Multi Purpose Keys is
associated with a call, the button’s speed dial/BLF function will not work.
Making Calls using IP Addresses
Direct IP Call allows two phones to talk to each other in an ad-hoc fashion without a SIP proxy. VoIP calls
can be made between two phones if:
•
•
•
Both phones have public IP addresses, or
Both phones are on a same LAN/VPN using private or public IP addresses, or
Both phones can be connected through a router using public or private IP addresses (with necessary
port forwarding or DMZ)
To make a direct IP call, please follow these steps:
1. Press MENU button to bring up MAIN MENU
2. Select “Direct IP Call” using the arrow-keys
3. Press OK to select
4. Input the 12-digit target IP address. (Please see example below)
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5. Press OK key to initiate call
To make a quick IP call, please see next section.
For example: If the target IP address is 192.168.1.60 and the port is 5062 (e.g. 192.168.1.60:5062), input
the following: 192*168*1*60#5062 - The “ * ” key represent the dot“.” ; The “#” key represent colon “:”. Press
OK to dial out.
Quick IP Call Mode
The GXP21xx also supports Quick IP call mode. This enables the phone to make direct IP-calls, using only
the last few digits (last octet) of the target phone’s IP-number. This is possible only if both phones are in
under the same LAN/VPN. This simulates a PBX function using the CMSA/CD without a SIP server.
Controlled static IP usage is recommended.
Setting up the phone to make Quick IP calls
To enable Quick IP calls, the phone has to be setup first. This is done through the web-setup function. In the
“Advanced Settings” page, set the "Use Quick IP-call mode to YES. When #xxx is dialed, where x is 0-9 and
xxx <=255, a direct IP call to aaa.bbb.ccc.XXX is completed. “aaa.bbb.ccc” is from the local IP address
regardless of subnet mask. The numbers #xx or #x are also valid. The leading 0 is not required (but OK).
For example:
192.168.0.2 calling 192.168.0.3 -- dial #3 follow by SEND or #
192.168.0.2 calling 192.168.0.23 -- dial #23 follow by SEND or #
192.168.0.2 calling 192.168.0.123 -- dial #123 follow by SEND or #
192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3
NOTE: If you have a SIP Server configured, a Direct IP-IP still works. If you are using STUN, the Direct IP-
IP call will also use STUN. Configure the “Use Random Port” to “NO” when completing Direct IP calls.
ANSWERING PHONE CALLS
Receiving Calls
1. Incoming single call: Phone rings with selected ring-tone. The corresponding account LINE flashes
red. Answer call by taking Handset/SPEAKER/Headset off hook or pressing SPEAKER or by
pressing the corresponding account LINE button.
2. Incoming multiple calls: When another call comes in while having an active call, the phone will
produce a Call Waiting tone (stutter tone). Next available lines will flash red (as described in section
4.3.2). Answer the incoming call by pressing its corresponding LINE button. The current active call
will be put on hold.
3. Paging/Intercom Enabled: Phone beeps once and automatically establishes the call via SPEAKER.
(PBX or Server must also supports this feature)
Do Not Disturb
Press the “DND” button to enable/disable “Do Not Disturb” (the corresponding icon will be on the right hand
side of the screen). When DND is enabled, the phone will not ring and send caller directly to voicemail.
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PHONE FUNCTIONS DURING A PHONE CALL
Call Waiting/ Call Hold
1. Hold: Place a call on hold by pressing the “HOLD” button.
2. Resume: Resume call by pressing the corresponding blinking LINE.
3. Multiple Calls: Automatically place ACTIVE call on “HOLD” by selecting another available LINE to
place or receive another call. Call Waiting tone (stutter tone) audible when line is in use.
Mute
1. Press the MUTE button to enable/disable muting the microphone.
2. The “Line Status Indicator” will show “LINEx: SPEAKING” or “LINEx: MUTE” to indicate whether the
microphone is muted.
Call Transfer
GXP21xx supports both Blind and Attended transfer:
1. Blind Transfer: Press “TRANSFER” button, then dial the number and press the “SEND” button to
complete transfer of active call.
2. Attended Transfer: Press “LINEx” button to make a call and automatically place the ACTIVE LINE
on HOLD. Once the call is established, press “TRANSFER” key then the LINE button of the waiting
line to transfer the call. Hang up the phone call after “Transfer Successful” is displayed in the screen.
NOTE: To transfer calls across SIP domains, SIP service providers must support transfer across SIP
domains. Blind transfer will usually use the primary account SIP profile.
5-Way Conferencing
GXP21xx can host conference calls and supports up to 5-way conference calling (Excludes GXP2100 which
supports up to 4-way).
1. Initiate a Conference Call:
.
.
.
.
Establish a connection with two or more parties
Press CONF button
Choose the desired line to join the conference by pressing the corresponding LINE button
Repeat previous two steps for all other parties that would like to join the conference. This
can be done at any time. However, if a new call comes in, the other calls will be placed on
hold and the host will have to individually re-join the held lines back into the conference by
repeating the previous two steps again
2. Cancel Conference: Canceling establishing conference call
.
If after pressing the “CONF” button, a user decides not to conference anyone, press CONF
again or the original LINE button
.
This will resume two-way conversation
3. End Conference:
.
.
Press HOLD to end the conference call and put all parties on hold;
To speak with an individual party, select the corresponding blinking LINE.
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NOTE: The party that starts the conference call has to remain in the conference for its entire duration, you
can put the party on mute but it must remain in the conversation. Also, this is not applicable when the feature
“Transfer on call hangup” is turned on.
Voice Messages (Message Waiting Indicator)
A blinking red MWI (Message Waiting Indicator) indicates a message is waiting. Press the Message button to
retrieve the message. An IVR will prompt the user through the process of message retrieval. Press a specific
LINE to retrieve messages for a specific line account.
NOTE:
•
Each line has a separate voicemail account. Each account requires a voicemail portal number to be
configured in the “Voicemail User ID” field.
•
To check which line account has a message 1) press the message button (this always checks the
primary account), 2) check each line for stutter tone or 3) check missed calls using the menu.
Busy Lamp Field
The Multi Purpose Key buttons can be configured for Busy Lamp Field function with a specified account.
When BLF is configured on one of the multi-functional buttons, the Speed Dial function will work when that
line is not in use. Call Pick Up is supported when user presses a flashing BLF key.
Shared Call Appearance (SCA)
The GXP21xx phone supports shared call appearance by Broadsoft standard. This feature allows members
of the SCA group to shared SIP lines and provides status monitoring (idle, active, progressing, hold) of the
shared line. When there is an incoming call designated for the SCA group, all of the members of the group
will be notified of an incoming call and will be able to answer the call from the phone with the SCA extension
registered.
All the users that belong to the same SCA group will be notified by visual indicator when a user seizes the
line and places an outgoing call, and all the users of this group will not be able to seize the line until the line
goes back to an idle state or when the call is placed on hold. (With the exception of when multiple call
appearances are enabled on the server side).
In the middle of the conversation, there are two types of hold: Public Hold and Private Hold. When a member
of the group places the call on public hold, the other users of the SCA group will be notified of this by the red-
flashing button and they will be able to resume the call from their phone by pressing the line button. However,
if this call is placed on private-hold, no other member of the SCA group will be able to resume that call.
To enable shared call appearance, the user would need to register the shared line account on one of the
accounts on the phone. In addition, they would need to navigate to “Settings”->”Basic Settings” on the web
UI and set the line to “Shared Line” with the corresponding account. If the user requires more shared call
appearances, the user can configure multiple line buttons to be “shared line” buttons associated with the
account.
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CALL FEATURES
The GXP21xx supports traditional and advanced telephony features including caller ID, caller ID w/name,
call forward/transfer/park/hold as well as intercom/paging and BLF.
Table 11: GXP21xx Call Features
Key
*30
*31
*67
*82
*70
*71
*72
Call Features
Block Caller ID (for all subsequent calls)
Send Caller ID (for all subsequent calls)
Block Caller ID (per call)
Send Caller ID (per call)
Disable Call Waiting (per Call)
Enable Call Waiting (per Call)
Unconditional Call Forward
Dial “*72” for a dial tone. Dial the forwarding number followed by “#”. Wait for dial
tone. LCD will display “Call FWD Activated”.
*73
*90
Cancel Unconditional Call Forward: dial “*73” and get the dial tone, then hang up.
LCD will display “Call FWD Activated”.
Busy Call Forward
Dial “*90” for a dial tone. Dial the forwarding number followed by “#”. Wait for a dial
tone. Hang up.
*91
*92
Cancel Busy Call Forward: dial “*91”. Wait for dial tone. Hang up.
Delayed Call Forward
Dial “*92” for a dial tone. Dial the forwarding number followed by “#”. Wait for a dial
tone. Hang up. LCD will display “Call FWD Activated”.
*93
Cancel Delayed Call Forward
Dial “*93” for a dial tone, then hang up.
CUSTOMIZED LCD SCREEN & XML
Grandstream GXP21xx Enterprise IP phone support both simple and advanced XML applications: 1) XML Custom
Screen, 2) XML Downloadable Phonebook and 3) Advanced XML Survey Application. For more information on
how to create a downloadable XML phonebook, creating a custom idle screen and/or reprogramming the soft-keys
on GXP21xx, please visit our website at: http://www.grandstream.com/support
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Configuration Guide
The GXP21xx can be configured in two ways. Firstly, using the Key Pad Configuration Menu on the phone;
secondly, through embedded web-configuration menu.
CONFIGURATION VIA KEYPAD
To enter the MENU, press the round button. Navigate the menu by using the arrow keys: up/down and left/right.
Press the OK button to confirm a menu selection. The phone automatically exits MENU mode with an incoming
call, the phone is off-hook or the MENU mode if left idle for 20 seconds.
Press the MENU button to enter the key the Key Pad Menu. The menu options available are listed in table 12.
Table 12: Key Pad Configuration Menu
Item
Description
Call History
Displays histories of answered, dialed, missed, and transferred and forwarded
calls
Status
Displays the network status, account status, software version, MAC-address and
hardware version of the phone
Phone Book
Displays the phonebook and downloads phonebook XML
Displays the LDAP directory and downloads directory
Goes to instant messages
LDAP Directory
Instant Messages
Direct IP Call
Preference
Dials IP address for direct IP call
Press Menu button to enter this sub menu including:
•
Do NOT Disturb
DND (Do Not Disturb) function could be turned on or off in the “Do Not
Disturb” menu.
•
•
Ring Tone
Choose different ring tones in the “Ring Tone” menu.
Ring Volume
Press Menu button to hear the selected ring volume, press “←” or “→”
to hear and adjust the ring tone volume.
LCD Contrast
Press “←” or “→” to adjust the LCD contrast.
LCD Brightness
Press “←” or “→” to adjust the LCD brightness for active/idle screen.
Download SCR XML
The phone will download the custom idle screen if available.
Erase Custom SCR
•
•
•
•
Custom idle screen will be erased and will be replaced with default
logo.
•
Display Language
You can choose English, Simplified Chinese, Traditional Chinese,
Korean, Japanese, Italian, Spanish, French, German, Portuguese,
Russian, Croatian, Hungarian, Polish, Slovenian which are built in the
phone. Users could select Automatic for local language based on IP
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location if available. Also, the phone will download secondary
language if available.
•
Time Settings
Press Menu button to choose the menu item
Press “←” or follow the soft keys to return to the main menu
Config
Press Menu button to display the configuration selections:
•
SIP
To change SIP server settings for SIP accounts.
•
Upgrade
In this menu setting regarding the firmware server and Config server can
be changed. It also enables the user to make the phone attempt to
download new firmware.
•
•
Factory Reset
Key in the physical/MAC address on back of the phone.
Press Menu button to reset FACTORY DEFAULT setting. Do not use
Factory Reset unless you want to restore factory settings.
Layer 2 QoS
Configure 802.1Q/VLAN Tag and priority value.
Press Menu to display the factory function items including
Factory Functions
•
Audio Loopback
Speak into the handset. If you hear your voice in the handset, your audio
works fine. Press Menu button to exit the mode
Diagnostic Mode
•
All LEDs will light up.
Press any key on the keypad, to display the button name in the LCD. Lift
and put back the handset or press Menu button to exit the diagnostic
mode.
Press “←” to return the main menu
Network
Reboot
To enable/disable DHCP; to setup IP-address, Net mask and Gateway address
Press Menu button to reboot the device
Exit
Exit from this menu
FIGURE 2: KEYPAD GUI FLOW
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Call History
Any of previous menus
Answered Calls
Dialed Calls
Missed Calls
Back
Clear All
Transferred Calls
Forwarded Calls
MENU
New Entry
Phone Book
Name:
New Entry
Number:
Download Phonebook XML
Back
Acct:
Confirm Add:
Cancel and Return:
LDAP Directory
Search Configuration
View Directory
Download Directory
Search Configuration
Back
Call History
Status
Select Filter
Filter Value
Back
Instant Message
Do Not Disturb
Clear All
Back
Phone Book
LDAP Directory
Enable DND
Disable DND
Back
Preference
Ring Tone
Do Not Disturb
Ring Tone
Instant
Message
Default Ring
Ring1
Ring2
Ring 3
Back
LCD Contrast
LCD Brightness
Download SCR XML
Erase Custom SCR
Display Language
Back
Direct IP Call
Preference
Config
LCD Brightness
Active
Idle
Back
SIP
Account
SIP Proxy
Outbound
Proxy
SIP User ID
SIP Auth ID
SIP Password
SIP Transport
Audio
Config
SIP
Factory
Functions
Upgrade
Factory Reset
Layer 2 QoS
Back
Network
Reboot
Exit
Display Language
English
Chinese
French
Spanish
German
Italian
Secondary Language
Language File Postfix
Back
Factory Function
Save
Audio Loopback
Diagnostic Mode
Back
Upgrade
Firmware
Server
Config Server
Upgrade Via
Network
Diagnostic Mode
IP Setting
PPPoE Settings
IP
Netmask
Gateway
DNS Server 1
DNS Server 2
Back
Layer 2 QoS
Keypad/LED Diagnostic
802.1Q/VLAN Tag
Priority value
Reset Vlan Config
Back
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CONFIGURATION VIA WEB BROWSER
The GXP21xx embedded Web server responds to HTTP/HTTPS GET/POST requests. Embedded HTML
pages allow a user to configure the IP phone through a Web browser such as Microsoft’s IE or Mozilla
Firefox, Google Chrome.
Access the Web Configuration Menu
To access the phone’s Web Configuration Menu
•
•
•
•
•
Connect the computer to the same network as the phone1
Make sure the phone is turned on and shows its IP-address
Start a Web-browser on your computer
Enter the phone’s IP-address in the address bar of the browser2
Enter the administrator’s password to access the Web Configuration Menu3
1
2
3
The Web-enabled computer has to be connected to the same sub-network as the phone. This can easily
be done by connecting the computer to the same hub or switch as the phone is connected to. In absence
of a hub/switch (or free ports on the hub/switch), please connect the computer directly to the phone using
the PC-port on the phone.
If the phone is properly connected to a working Internet connection, the phone will display its IP address.
This address has the format: xxx.xxx.xxx.xxx, where xxx stands for a number from 0-255. You will need
this number to access the Web Configuration Menu. e.g. if the phone shows 192.168.0.60, please use
The default administrator password is “admin”; the default end-user password is “123”.
NOTE: When changing any settings, always SUBMIT them by pressing “UPDATE” button on the bottom of
the page. Reboot the phone to have the changes take effect. If, after having submitted some changes, more
settings have to be changed, press the menu option needed.
Definitions
This section will describe the options in the Web configuration user interface. As mentioned, a used can log
in as an administrator or end-user.
Functions available for the end-user are:
•
Status: Displays the network status, account statuses, software version and MAC address of the
phone
•
Basic: Basic preferences such as date and time settings, multi-purpose keys and LCD settings can
be set here.
Additional functions available to administrators are:
•
Advanced Settings: To set advanced network settings, codec settings and XML configuration
settings.
•
•
Account X: To configure each of the SIP accounts.
EXT X: To configure setting on extension module (Not applicable on the GXP2100)
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Table 13: Device Configuration - Status
MAC Address
IP Address
The device ID, in HEXADECIMAL format.
This field shows IP address of GXP21xx.
This field contains the product model information.
This field contains the product part number.
Product Model
Part Number
Software Version
• Program: This is the main firmware release number, which is always used for
identifying the software (or firmware) system of the phone.
• Boot: Booting code version number
• Core: Core code version number
• Base: Base code version number
• DSP: DSP code version number
• Aux: Aux code version number
System Up Time
System Time
Registered
This field shows system up time since the last reboot.
This field shows the current time on the phone system.
Indicates whether accounts are registered to the related SIP server.
Indicates whether the PPPoE connection is enabled (connected to a modem).
PPPoE Link Up
Service Status
• GUI: shows the GUI status: running or stopped
• Phone: shows the phone status: running or stopped
Core Dump
Download core dump file for troubleshooting when necessary.
Table 14: Device Configuration – Settings/Basic Settings
End User Password
IP Address
This contains the password to access the Web Configuration Menu. This field is case
sensitive with a maximum length of 25 characters.
The GXP21xx operates in two modes:
1. DHCP mode: all the field values for the Static IP mode are not used (even
though they are still saved in the Flash memory.) The GXP21xx acquires its
IP address from the first DHCP server it discovers on its LAN. The DHCP
option is reserved for NAT router mode. To use the PPPoE feature, set the
PPPoE account settings. The GXP21xx establishes a PPPoE session if any
of the PPPoE fields is set.
2. PPPoE mode: configure all of the following fields: PPPoE account ID,
PPPoE password and PPPoE service name.
3. Static IP mode: configure all of the following fields: IP address, Subnet
Mask, Default Router IP address, DNS Server 1 (primary), DNS Server 2
(secondary). These fields are set to zero by default.
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802.1x Mode
This option allows the user to enable/disable 802.1x mode on the phone. The default
value is disabled. To enable 802.1x mode, this field should be set to EAP-MD5.
Once enabled, the user would be required to enter the following information below to
be authenticated on the network:
•
•
Identity
MD5 Password
Line Keys x
This allows the user to configure the account mapped to each line key, as well as
enabling SCA (Shared Call Appearance) for the line.
Options available for Key Mode are :
1. Line
2. Shared Line
Multi Purpose Key X
These options are used to assign a function to the corresponding multi purpose key.
Options available are:
1. Speed Dial.
2. BLF (Busy Lamp Field). This option has to be supported on the PBX and it
indicates the status of the extension. The three possible states are idle
(green), busy (red), ringing (blinking red).
3. Presence Watcher. This option has to be supported by a presence server
and it is tied to the “Do not disturb” status of the phone.
4. Eventlist BLF. This option is similar to the BLF option but in this case the PBX
collects the information from the phones and sends it out in one single notify
message. PBX has to support this feature.
Each function is connected to one of the accounts and has a target username and
user ID.
Time Zone
This parameter controls the date/time display according to the specified time zone.
If “Allow DHCP Option 2 to override Time Zone setting” is checked, the time zone will
be overridden by the DHCP server.
Self-Defined Time
Zone
This parameter allows the users to define their own time zone.
The syntax is: std offset dst [offset], start [/time], end [/time]
Default is set to: MTZ+6MDT+5,M3.2.0,M11.1.0
MTZ+6MDT+5,
This indicates a time zone with 6 hours offset with 1 hour ahead which is U.S central
time. If it is positive (+) if the local time zone is west of the Prime Meridian (A.K.A:
International or Greenwich Meridian) and negative (-) if it is east.
M3.2.0,M11.1.0
The 1st number indicates Month: 1,2,3.., 12 (for Jan, Feb, .., Dec)
The 2nd number indicates the nth iteration of the weekday: (1st Sunday, 3rd
Tuesday…)
The 3rd number indicates weekday: 0,1,2,..,6( for Sun, Mon, Tues,..,Sat)
Therefore, this example is the DST which starts from the second Sunday of March to
the 1st Sunday of November.
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Weather Update
By default, “Enable Weather Update:” is set to “Yes”. If set to “No”, weather
information will not display on the phone.
Settings to customize the display of weather via:
•
•
•
City Code – Enter city code
Update Interval – Refresh time in minutes
Degree Unit – Select Automatic, Fahrenheit or Celsius
Weather information is displayed on GXP21xx LCD when “Enable Weather Update”
is set to “Yes” and pressing the “SwitchSCR” soft-key once.
Stock Update
By default, “Enable Stock Update:” is set to “Yes”. If set to “No”, stock information will
not display on the phone.
Settings to customize the display of stock via:
•
Stock Code – Enter stock code
Stock information is displayed in GXP21xx LCD when “Enable Stock Update” is set to
“Yes” and pressing the “SwitchSCR” soft-key twice.
Currency Update
By default, “Enable Currency Update:” is set to “Yes”. If set to “No”, currency
information will not display on the phone.
Settings to customize the display of currency via:
•
Currency Code – Enter currency code
Currency information (foreign currencies to US dollar) is displayed in GXP21xx LCD
when “Enable Currency Update” is set to “Yes” and pressing the “SwitchSCR” soft-
key three times.
LCD Backlight
Brightness
Set the LCD brightness level for idle state and active state. Range from 0 to 8 where
0 means off and 8 means the brightest.
LCD Contrast
Set LCD contrast. Range from 0 to 20.
Time Display Format
LCD time display in 12 hour or 24 hour format.
Disable in-call DTMF
display
Default is “No”. This field is used to hide the keypad input during a call.
Disable Missed Call
Backlight
Default is “No”. By default, LCD backlight will light up whenever there is a missed call.
Default Mode:
HEADSET Key Mode
-
-
Toggle to Headset when using Speaker/Handset
Dial, pick up call or hang up call using Headset
Toggle Headset/Speaker:
-
toggle between using Headset and using Speaker
Headset TX gain (dB)
Headset RX gain (dB)
Set headset TX gain to -6, 0 or +6. Default is 0 db.
Set headset RX gain to -6, 0 or +6. Default is 0 db.
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Advanced User configuration includes not only the end user configuration, but also advanced configuration
such as SIP configuration, Codec selection, NAT Traversal Setting and other miscellaneous configuration.
Table 15: Device Configuration – Settings /Advanced Settings
Admin
Password
Administrator password. Only the administrator can access the “Advanced Settings”
and “Account Settings” page. Password field is purposely blank for security reasons
after clicking update and saved. The maximum password length is 25 characters.
Layer 3 QoS
Layer 2 QoS
Local RTP port
This field defines the layer 3 QoS parameter. It is the value used for IP Precedence
or Diff-Serv or MPLS. Default value is 12.
This contains the value used for layer 2 802.1Q/VLAN tag and 802.1p priority value.
Default setting is 0.
This parameter defines the local RTP-RTCP port pair used to listen and transmit. It
is the base RTP port for channel 0. When configured, channel 0 will use this port
_value for RTP and the port_value+1 for its RTCP; channel 1 will use port_value+2
for RTP and port_value+3 for its RTCP. Local RTP port ranges from 1024 to 65400
and must be even. The default value is 5004.
Use Random Port
Keep-alive interval
This parameter, when set to “Yes”, will force random generation of both the local
SIP and RTP ports. This is usually necessary when multiple GXPs are behind the
same NAT. Default is “No”.
This parameter specifies how often the GXP21xx sends a blank UDP packet to the
SIP server in order to keep the “hole” on the NAT open. Default is 20 seconds.
Use NAT IP
NAT IP address used in SIP/SDP message. Default is blank.
STUN Server
IP address or Domain name of the STUN server. STUN resolution result will display
in the STATUS page of the Web UI.
Firmware Upgrade and
Provisioning
Allows the user to select the following options for firmware upgrade:
•
•
•
Always Check for New Firmware
Check New Firmware only when F/W pre/suffix changes
Always Skip the Firmware Check.
Firmware upgrade may take up to 10 minutes depending on network environment.
Do not interrupt the firmware upgrading process.
Note: Grandstream strongly recommends that the user upgrade firmware
locally in a LAN environment if using TFTP to upgrade. Please DO NOT
interrupt the upgrade process (especially the power supply) as this will
damage the device.
XML Config File
Password
The password used for encrypting the XML configuration file using OpenSSL. This
is required for the phone to decrypt the encrypted XML configuration file.
HTTP/HTTPS User Name
HTTP/HTTPS Password
The user name for the HTTP/HTTPS server.
The password for the HTTP/HTTPS server.
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Upgrade Via
This field allows the user to choose the firmware upgrade method: TFTP, HTTP or
HTTPS.
Firmware Server Path
Defines the server path for the firmware server. It can be different from the
Configuration server which is used for provisioning.
Config Server Path
Defines the server path for provisioning; it can be different from the firmware server.
Firmware File
Prefix/Postfix
Default is blank. If configured, GXP21xx will request the firmware file with the
prefix/postfix and only the firmware with the matching encrypted prefix will be
downloaded and flashed into the phone.
This setting is useful for ITSPs. End user should keep it blank.
Config File
Prefix/Postfix
Default is blank. If configured, GXP21xx will request the config file with the
prefix/postfix and only the file with the matching encrypted prefix will be downloaded
and flashed into the phone.
This setting is useful for ITSPs. End user should keep it blank.
Allow DHCP Option 43
and Option 66 to
override server
Default is “Yes”. This allows device gets provisioned from the server automatically.
Automatic Upgrade
This function is used by ITSP. End user should NOT touch these parameters.
Default is “No”. Choose “Yes” to enable automatic HTTP upgrade and provisioning.
In “Check for upgrade every” field, enter the number of minutes to check the HTTP
server for firmware upgrade or configuration changes. When set to “No”, the phone
will only perform HTTP upgrade and configuration check once at boot up.
Authenticate Conf File
Default is “No”. If set to “Yes”, configuration file would be authenticated before
acceptance. End user should use default setting.
Enable TR-069
Default is “No”.
ACS URL
URL for TR-069 Auto Configuration Servers (ACS).
Enter username for TR-069.
TR-069 Username
TR-069 Password
Save Credentials
Auto Login
Enter password for TR-069.
Save TR-069 credentials. Default is “No”.
Auto Login TR-069 account. Default is “No”.
Enable periodic inform. Default is “No”.
When enabling periodic inform, set up the periodic inform interval.
Enter the connection request username.
Periodic Inform Enable
Periodic Inform Interval
Connection Request
Username
Connection Request
Password
Enter the connection request password.
Authentication Method
Select the authentication method among “No authentication”, “Basic” or Digest.
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Connection Request
Port
Enter the connection request port.
Phonebook XML
Download
Selects the file download mode for the download server. Users can choose from
TFTP/HTTP/No.
Phonebook XML Server
Path
The URL/IP address of the phonebook download server.
Phonebook Download
Interval
The interval at which the phonebook will be downloaded from the download server
(in Minutes). The default setting is 0.
Remove Manually-edited
entries on Downloads
If set to “Yes”, the phone will remove the manually-edited entries in the old
phonebook list before downloading the new file. The default setting is set to “Yes”.
LDAP Directory
IP address or domain name of LDAP script server.
Idle Screen XML
Download
Enable XML Idle Screen download via TFTP or HTTP. Select whether to “Use
Custom Filename” or not, and define the “XML server path”.
Download Screen XML
At Boot-up:
The phone will download the idle screen xml file if set to “Yes”. The default setting
is “No”.
Use custom filename:
The phone will use custom filename specified in XML server path if set to “Yes”.
The default setting is “No”.
Idle Screen XML Server
Path:
Specify the idle screen XML server path.
XML Application
Offhook Auto Dial
Syslog Server
Server path: enter server path for XML application.
Softkey Label: define the softkey label for the XML application.
To configure a User ID/extension to dial automatically when the phone is taken
offhook.
The IP address or URL of System log server. This feature is especially useful for
ITSPs.
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Syslog Level
Select the ATA to report the log level. Default is NONE. The level is one of DEBUG,
INFO, WARNING or ERROR. Syslog messages are sent based on the following
events:
•
•
•
•
•
•
•
•
•
•
product model/version on boot up (INFO level)
NAT related info (INFO level)
sent or received SIP message (DEBUG level)
SIP message summary (INFO level)
inbound and outbound calls (INFO level)
registration status change (INFO level)
negotiated codec (INFO level)
Ethernet link up (INFO level)
SLIC chip exception (WARNING and ERROR levels)
memory exception (ERROR level)
The Syslog uses USER facility. In addition to standard Syslog payload, it contains
the following components: GS_LOG: [device MAC address][error code] error
message.
For example: May 19 02:40:38 192.168.1.14 GS_LOG: [00:0b:82:00:a1:be][000].
Ethernet link is up.
Send SIP Log
NTP server
When setting the “Yes”, phone will send out SIP Log to syslog server. Default
setting is “No”.
This parameter defines the URI or IP address of the NTP (Network Time Protocol)
serve. It is used to display the current date/time.
Allow DHCP Option 42
to override NTP server
Default is “Yes”. This allows device gets provisioned for DHCP Option 42 from the
server automatically.
SSL Certificate
SSL Private Key
This defines the SSL certificate needed to access certain websites.
This defines the SSL Private key.
SSL Private Key
Password
This defines the SSL private key password.
Distinctive Ring Tone
Caller ID must be configured. Select a Distinctive Ring Tone 1 through 3 for a
particular Caller ID. The GXP21xx will ONLY use selected ring tones for particular
Caller IDs. For all other calls, the GXP21xx will use System Ring Tone. When
selected and no Caller ID is configured, the selected ring tone will be used for all
incoming calls.
System Ring Tone
System ring tone. Default is North American standard.
Adjust system ring tone frequencies and cadences based on local telecom
standard.
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Call Progress Tones
Using these settings, users can configure ring or tone frequencies based on
parameters from local telecom. By default, they are set to North American standard.
Frequencies should be configured with known values to avoid uncomfortable high
pitch sounds.
Syntax: f1=val,f2=val[,c=on1/off1[-on2/off2[-on3/off3]]];
(Frequencies are in Hz and cadence on and off are in 10ms)
ON is the period of ringing (“On time” in “ms”) while OFF is the period of silence. In
order to set a continuous ring, OFF should be zero. Otherwise it will ring ON ms
and a pause of OFF ms and then repeat the pattern. Up to three cadences are
supported.
Intercom User ID
Configure intercom user ID when intercom is used.
Disable Call Waiting
Default is “No”. If set to “Yes”, the call waiting feature will be disabled.
Default is “No”. If set to “Yes”, the call waiting tone will be disabled.
Disable Call
Waiting Tone
Disable Direct IP Calls
Use Quick IP Call Mode
Default is “No”. If set to “Yes”, direct IP calls will be disabled.
Dial an IP address under the same LAN/VPN segment by entering the last octet in
the IP address.
In the Advanced Settings page there is an option “Use Quick IP-call mode”. Default
setting is “No”. When set to “Yes”, and #XXX is dialed, where X is 0-9 and XXX
<=255, phone will make direct IP call to aaa.bbb.ccc.XXX where aaa.bbb.ccc
comes from the local IP address REGARDLESS of subnet mask.
#XX or #X are also valid so leading 0 is not required (but OK). See Quick IP Call
Mode for details.
Disable Conference
Default is “No”. If set to “Yes”, conference will be disabled.
Enable MPK Sending
DTMF
Default is No. If set to “Yes”, Muti-Purpose keys can be sent as DTMF.
Disable DND Button
Disable Transfer
Default is “No”. If set to “Yes”, the “DND” button on keypad will be disabled.
Default is “No”. If set to “Yes”, transfer will be disabled.
Auto-Attended Transfer
Default is “No”. If set to “Yes”, the phone will use attended transfer by default.
Configuration via
Keypad Menu
Configures the access control of configurations via the phone keypad menu. There
are three modes:
•
•
•
Unrestricted
Basic Settings Only
Constraint Mode
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Display Language
Allows user to choose preferred display language in web UI and key pad UI.
Currently, the phone supports these languages: English, Simplified Chinese,
Traditional Chinese, Korean, Japanese, Italian, Spanish, French, German,
Portuguese, Russian, Croatian, Hungarian, Polish and Slovenian.
Note: The “Automatic” setting in language refers to Grandstream’s IP2Location
client which when connected to Internet would attempt to lookup a database
(driven by Grandstream) with the IP address for its geographical location.
Language file postfix allows the language file to have different postfixes so the
phone can request a particular file. It will append an underscore "_" plus the string
in the language file postfix.
The default language file name is "gxp.txt". If the field “Language File postfix “has
"NL" string in it, then the phone will request "gxp_NL.txt" instead of "gxp.txt".
User can only load one secondary language.
Supported downloadable language: Czech, Dutch, Estonian, French, German,
Italian, Polish, Portuguese, Slovak, Slovenian and Spanish.
How to set up Download Language:
This is similar to updating firmware in your local network environment.
1. Get the language file gxp.txt ready. Make sure the file is using UTF-8 encoding.
2. Copy gxp.txt to the firmware server directory using your local TFTP or HTTP
server.
3. Access the advanced settings of the Web GUI, set “Display Language” to
“Download Language” and enter the server path in Firmware Server Path. Select
TFTP or HTTP for firmware upgrade.
4. Update and reboot the phone.
GXP21xx has up to six line appearances, each with an independent SIP account. Each SIP account requires
its own configuration page. Their configurations are identical.
Table 16: SIP Account Settings
Account Active
Account Name
SIP Server
This field indicates whether the account is active. The default value is “Yes”.
The name associated with each account - displayed on LCD.
SIP Server’s IP address or Domain name provided by VoIP service provider.
This field allows administrator to configure a backup SIP Server.
Secondary SIP Server
Outbound Proxy
IP address or Domain name of Outbound Proxy, Media Gateway, or Session Border
Controller. Used for firewall or NAT penetration in different network environment. If
the system detects symmetric NAT, STUN will not work. ONLY outbound proxy can
provide solution for symmetric NAT.
SIP User ID
User account information provided by VoIP service provider (ITSP); either an actual
phone number or formatted like one.
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Authenticate ID
SIP service subscriber’s Authenticate ID used for authentication. It can be identical
to or different from SIP User ID.
Authenticate Password
SIP service subscriber’s account password for GXP21xx to register to (SIP) servers
of ITSP.
Name
SIP service subscriber’s name that is used for Caller ID display.
DNS Mode
The default is set to A Record. If user wishes to locate the server by DNS SRV,
the user may select SRV or NATPTR/SRV. When "Use Configured IP" option is
selected, if SIP server is configured as domain name, phone will not send DNS
query, but use "Primary IP" or "Secondary IP" to send sip message if at least one
of them are not empty.
Primary IP
This option applies only if “Use Configured IP” is selected, the phone will send DNS
query to the Primary IP. Insert IP address here.
Backup IP 1
Insert the first back up IP here.
Backup IP 2
Insert the second back up IP here.
SIP Registration
This parameter controls sending REGISTER messages to the proxy server. The
default setting is “Yes”.
Unregister on Reboot
Register Expiration
Default is “No”. If set to “Yes”, the SIP user’s registration information will be cleared
on reboot.
This parameter allows user to specify the time frequency (in minutes) that GXP21xx
refreshes its registration with the specified registrar. The default interval is 60
minutes. The maximum interval is 65,535 minutes (about 45 days).
Local SIP Port
This parameter defines the local SIP port used to listen and transmit. The default
value for Account 1 is 5060. It is 5062, 5064, 5066 for Account 2, Account 3 and
Account 4 respectively.
SIP Registration Failure
Retry Wait Time
Retry registration if the process failed. Default is 20 seconds.
SIP T1 Timeout
SIP T2 Interval
SIP Transport
RFC 3261 SIP T1 timer. Default is 0.5 second.
RFC 3261 SIP T2 timer. Default is 4 seconds.
Choose SIP Transport between UDP and TCP. Default is UDP.
Enable to check the domain certificate. Default is “No”.
Check Domain
Certificate
Remove OBP from
Route
The SIP Extension notifies the SIP server that it is behind a NAT/firewall.
Validate Incoming
Messages
This configuration selects whether or not the incoming messages should be
validated.
Support SIP Instance ID
Selects whether or not SIP Instance ID is supported.
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NAT Traversal
This parameter activates the NAT traversal mechanism. It has options: No, STUN,
Keep-Alive, UPnP, Auto, VPN.
If selecting STUN and a STUN server is also specified, the phone performs
according to the STUN client specification. Using this mode, the embedded STUN
client detects if and what type of NAT/Firewall configuration is used. If the detected
NAT is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the phone will use
its mapped public IP address and port in all of its SIP and SDP messages.
If selecting Keep-Alive with no specified STUN server, the GXP21xx will periodically
(every 20 seconds or so) send a blank UDP packet (with no payload data) to the
SIP server to keep the “hole” on the NAT open.
SUBSCRIBE for MWI
Default is “No”. When set to “Yes” a SUBSCRIBE for Message Waiting Indication
will be sent periodically.
PUBLISH for Presence
Proxy-Require
Enable Presence feature.
SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
Voice Mail UserID
When configured, user can access messages by pressing “MSG” button. This ID is
usually the VM portal access number.
Send DTMF
This parameter specifies the mechanism to transmit DTMF digit. There are 3
supported modes: in audio which means DTMF is combined in audio signal (not
very reliable with low-bit-rate codec), via RTP (RFC2833), or via SIP INFO.
DTMF Payload Type
Early Dial
Sends DTMF using RFC2833. The default is 101.
Default is “No”. Use only if proxy supports 484 responses.
Sets the prefix added to each dialed number.
Dial Plan Prefix
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Dial Plan
Dial Plan Rules:
1. Accepted Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d
2. Grammar: x - any digit from 0-9;
a) xx+ - at least 2 digit numbers
b) xx. - only 2 digit numbers
c) ^ - exclude
d) [3-5] - any digit of 3, 4, or 5
e) [147] - any digit of 1, 4, or 7
f) <2=011> - replace digit 2 with 011 when dialing
g) | - the OR operand
• Example 1: {[369]11 | 1617xxxxxxx}
Allow 311, 611, and 911 or any 10 digit numbers with leading digits 1617
• Example 2: {^1900x+ | <=1617>xxxxxxx}
Block any number of leading digits 1900 or add prefix 1617 for any dialed 7 digit
numbers
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+}
Allows any number with leading digit 1 followed by a 3 digit number, followed by any
number between 2 and 9, followed by any 7 digit number OR Allows any length of
numbers with leading digit 2, replacing the 2 with 011 when dialed.
3. Default: Outgoing – {x+}
Allow any length of numbers.
Example of a simple dial plan used in a Home/Office in the US:
{ ^1900x. | <=1617>[2-9]xxxxxx | 1[2-9]xx[2-9]xxxxxx | 011[2-9]x. | [3469]11 }
Explanation of example rule (reading from left to right):
• ^1900x. - prevents dialing any number started with 1900
• <=1617>[2-9]xxxxxx - allows dialing to local area code (617) numbers by dialing
7 numbers and 1617 area code will be added automatically
• 1[2-9]xx[2-9]xxxxxx |- allows dialing to any US/Canada Number with 11 digits
length
• 011[2-9]x. - allows international calls starting with 011
• [3469]11 - allow dialing special and emergency numbers 311, 411, 611 and 911
Note: In some cases where the user wishes to dial strings such as *123 to activate
voice mail or other applications provided by their service provider, the * should be
predefined inside the dial plan feature. An example dial plan will be: { *x+ } which
allows the user to dial * followed by any length of numbers.
Delayed Call Forward
Wait Time
Time waited before the call is forward to a number or VM.
Default is 20 seconds.
Enable Call Features
Default is “Yes”. If set to “No”, Call transfer, Call Forwarding & Do-Not-Disturb are
supported locally provided ITSP support those features. In addition, “ForwardAll”
softkey will be hidden if call feature code is disabled for Account 1.
Call Log
User can choose to disable Call Log and what kind of calls to log.
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Session Expiration
The SIP Session Timer extension enables SIP sessions to be periodically
“refreshed” via a SIP request (UPDATE, or re-INVITE. Once the session interval
expires, if there is no refresh via a UPDATE or re-INVITE message, the session is
terminated.
Session Expiration is the time (in seconds) at which the session is considered timed
out, provided no successful session refresh transaction occurs beforehand. The
default value is 180 seconds.
Min-SE
Defines the minimum session expiration (in seconds). Default is 90 seconds.
Caller Request Timer
If set to “Yes”, the phone will use session timer when it makes outbound calls if
remote party supports session timer.
Callee Request Timer
Force Timer
If selecting “Yes”, the phone will use session timer when it receives inbound calls
with session timer request.
If set to “Yes”, the phone will use session timer even if the remote party does not
support this feature. If set to “No”, the session timer is enabled only when the
remote party supports this feature. To turn off Session Timer, select “No” for Caller
Request Timer, Callee Request Timer, and Force Timer.
UAC Specify Refresher
UAS Specify Refresher
Force INVITE
As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee
or proxy server as the refresher.
As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to
use the phone as the refresher.
Session Timer can be refreshed using INVITE method or UPDATE method. Select
“Yes” to use INVITE method to refresh the session timer.
Enable 100rel
PRACK (Provisional Acknowledgment) method enables reliability to SIP provisional
responses (1xx series). This is required to support PSTN inter-networking.
Account Ring Tone
There are 4 uniquely defined ring tones:
•
One (1) System Ring Tone: when selected, all calls will ring with system
ring tone.
•
Three (3) Customer Ring Tones: when selected, incoming calls from
designated account will play selected ring tone.
Ring Timeout
Defines how long the phone will ring when receiving a call. Default is 60 seconds.
Send Anonymous
If this parameter is set to “Yes”, the “From” header in outgoing INVITE message will
be set to anonymous, essentially blocking the Caller ID from displaying.
Anonymous Call
Rejection
Default is “No”. If set to “Yes”, anonymous call will be rejected.
Auto Answer
Default is “No”. If set to “Yes”, GXP21xx will automatically switch on speaker to
answer the incoming call. Set to Intercom/Paging mode, it will answer the call based
on the SIP info header from the server.
Allow Auto Answer by
Call-Info
If the Call-Info header contains answer-after=0, the call be answered automatically
(so called paging mode).
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Refer-To Use Target
Contact
Default is “No”. If set to “Yes”, then for Attended Transfer, the “Refer-To” header
uses the transferred target’s Contact header information.
Transfer on Conference
Hangup
Defines whether or not the call is transferred to the other party if the initiator of the
conference hangs up.
Default setting is set to “No”.
Preferred Vocoder
GXP21xx supports up to 7 different Vocoder types including G.711(a/µ) (also known
as PCMU/PCMA), G.723.1, G.729A/B, G.726-32, iLBC, G.722 (wide-band).
Configure Vocoders in a preference list that is included with the same preference
order in SDP message. Enter the first Vocoder in this list by choosing the
appropriate option in “Choice 1”. Similarly, enter the last Vocoder in this list by
choosing the appropriate option in “Choice 8”.
SRTP Mode
Enable SRTP mode based on selection. Default is “No”.
Selects whether or not symmetric RTP is supported.
Symmetric RTP
Silence Suppression
This controls the silence suppression/VAD feature of the audio codec G.723 and
G.729. If set to “Yes”, when silence is detected, a small quantity of VAD packets
(instead of audio packets) will be sent during the period of no talking. If set to “No”,
this feature is disabled.
Voice Frames per TX
This field contains the number of voice frames to be transmitted in a single Ethernet
packet (be advised the IS limit is based on the maximum size of Ethernet packet is
1500 byte (or 120kbps)).
When setting this value, be aware of the requested packet time (ptime, used in SDP
message) is a result of configuring this parameter. This parameter is associated
with the first codec in the above codec Preference List or the actual used payload
type negotiated between the 2 conversation parties at run time. E.g., if the first
codec is configured as G.723 and the “Voice Frames per TX” is set to 2, then the
“ptime” value in the SDP message of an INVITE request will be 60ms because each
G.723 voice frame contains 30ms of audio. Similarly, if this field is set to 2 and the
first codec is G.729 or G.711 or G.726, then the “ptime” value in the SDP message
of an INVITE request will be 20ms.
If the configured voice frames per TX exceeds the maximum allowed value, the IP
phone will use and save the maximum allowed value for the corresponding first
codec choice. The maximum value for PCM is 10 (x10ms) frames; for G.726, it is 20
(x10ms) frames; for G.723, it is 32 (x30ms) frames; for G.729/G.728, 64 (x10ms)
and 64 (x2.5ms) frames respectively.
Please be careful when editing these parameters. Adjusting these parameters will
also change the dynamic jitter buffer. The GXP21xx has a patent dynamic jitter
buffer handling algorithm. The jitter buffer range is 20 ~ 200 ms.
We recommend using the default settings provided. We do not recommend
adjusting these parameters if you are an average user. Incorrect settings will affect
the voice quality.
No Key Entry Timeout
Default is 4 seconds. After the timeout, the phone will send out the dialed number.
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Use # as Dial Key
This parameter allows users to configure the “#” key as the “Send” (or “Dial”) key. If
set to “Yes”, the “#” key will immediately send the call. In this case, this key is
essentially equivalent to the “(Re)Dial” key. If set to “No”, the “#” key is included as
part of the dial string.
G723 Rate
Encoding rate for G723 codec. By default, 6.3kbps rate is set.
Select “ITU” or “IETF” for G726-32 packing mode.
G726-32 Packing Mode
iLBC Frame Size
iLBC packet frame size. Default is 20ms. For Asterisk PBX, 30ms might be
required.
iLBC Payload Type
eventlist BLF URI
Payload type for iLBC. Default value is 97. The valid range is between 96 and 127.
If the server supports this feature, user needs to configure an "eventlist BLF" URI on
On the GXP21xx, under Account page, fill in the ""eventlist BLF" field with the URI
without the domain. (i.e.: BLF1006). Under Basic Settings, please select "eventlist
BLF" in the Multi Purpose Key then choose account number, enter username and
user id.
Special Feature
Default is Standard. Choose the selection to meet special requirements from Soft
Switch vendors.
SAVING THE CONFIGURATION CHANGES
After the user makes a change to the configuration, press the “Update” button in the Configuration Menu.
The web browser will then display a message window to confirm saved changes.
We recommend rebooting or powering cycle the IP phone after saving changes.
REBOOTING THE PHONE REMOTELY
Press the “Reboot” button at the bottom of the configuration menu to reboot the phone remotely. The web
browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in
again.
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Software Upgrade & Customization
Software (or firmware) upgrades are completed via either TFTP or HTTP. The corresponding configuration
settings are in the ADVANCED SETTINGS configuration page.
FIRMWARE UPGRADE THROUGH TFTP/HTTP
To upgrade via TFTP or HTTP, select TFTP or HTTP upgrade method. “Upgrade Server” needs to be set to
a valid URL of a HTTP server. Server name can be in either FQDN or IP address format. Here are examples
of some valid URLs.
•
•
firmware.mycompany.com:6688/Grandstream/1.2.3.5
72.172.83.110
There are two ways to set up the Upgrade Server to upgrade firmware: via Key Pad Menu or Web
Configuration Interface.
Key Pad Menu
To configure the Upgrade Server via Key Pad Menu options, select “Config” from the Main Menu, then select
“Upgrade”. Under this sub Menu, user can edit Upgrade Server in either an IP address format or FQDN
format. Choose “Save and use TFTP” or “Save and use HTTP” to select upgrade method. Select “Reboot”
from the Main Menu to reboot the phone.
Web Configuration Interface
To configure the Upgrade Server via the Web configuration interface, open the web browser. Enter the
GXP21xx IP address. Enter the admin password to access the web configuration interface. In the
ADVANCED SETTINGS page, enter the Upgrade Server’s IP address or FQDN in the “Firmware Server
Path” field. Select TFTP or HTTP upgrade method. Update the change by clicking the “Update” button.
“Reboot” or power cycle the phone to update the new firmware.
During this stage, the LCD will display the firmware file downloading process. Please do NOT disrupt or
power down the unit. If a firmware upgrade fails for any reason (e.g., TFTP/HTTP server is not responding,
there are no code image files available for upgrade, or checksum test fails, etc), the phone will stop the
upgrading process and re-boot using the existing firmware/software.
Firmware upgrades take around 60 seconds in a controlled LAN or 5-10 minutes over the Internet. We
recommend completing firmware upgrades in a controlled LAN environment whenever possible.
No Local TFTP/HTTP Server
For users who do not have a local TFTP/HTTP server, we provide a HTTP server on the public Internet for
users to download the latest firmware upgrade automatically. Please check the Support/Download section of
Alternatively, download and install a free TFTP or HTTP server to the LAN to perform firmware upgrades. A
free Windows version TFTP server is available:
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INSTRUCTIONS FOR LOCAL TFTP UPGRADE:
1. Unzip the file and put all of them under the root directory of the TFTP server.
2. The PC running the TFTP server and the GXP21xx should be in the same LAN segment.
3. Go to File -> Configure -> Security to change the TFTP server's default setting from
"Receive Only" to "Transmit Only" for the firmware upgrade.
4. Start the TFTP server, in the phone’s web configuration page
5. Configure the Firmware Server Path with the IP address of the PC
6. Update the change and reboot the unit
User can also choose to download the free HTTP server from http://httpd.apache.org/ or use Microsoft IIS
web server.
NOTE:
•
When GXP21xx phone boots up, it will send TFTP or HTTP request to download configuration file
“cfg000b82xxxxxx”, where “000b82xxxxxx” is the MAC address of the GXP21xx phone. This file is
for provisioning purpose. For normal TFTP or HTTP firmware upgrades, the following error
messages in a TFTP or HTTP server log can be ignored: “TFTP Error from [IP ADRESS] requesting
cfg000b82023dd4 : File does not exist.Configuration File Download”
CONFIGURATION FILE DOWNLOAD
The GXP21xx can be configured via Web Interface as well as via Configuration File (binary or XML) through
TFTP or HTTP/HTTPS. The “Config Server Path” is the TFTP or HTTP server path for the configuration file.
It needs to be set to a valid URL, either in FQDN or IP address format. The “Config Server Path” can be the
same or different from the “Firmware Server Path”.
A configuration parameter is associated with each particular field in the web configuration page. A parameter
consists of a Capital letter P and 2 to 4 digit numeric numbers, i.e., P2 is associated with “Admin Password”
in the ADVANCED SETTINGS page. For a detailed parameter list, please refer to the corresponding
configuration template of the firmware.
Once the GXP21xx boots up (or re-booted), it will request a configuration file named “cfgxxxxxxxxxxxx”
followed by a request for configuration XML file named “cfgxxxxxxxxxxxx.xml”, where “xxxxxxxxxxxx” is the
MAC address of the device, i.e., “cfg000b820102ab”. The configuration file name should be in lower cases.
Managing Firmware and Configuration File Download
When “Automatic Upgrade” is set to “Yes”, a Service Provider can use P193 (Auto Check Interval, in
minutes, default and minimum is 60 minutes) to have the devices periodically check for upgrades at pre-
scheduled time intervals. By defining different intervals in P193 for different devices, a Server Provider can
manage and reduce the Firmware or Provisioning Server load at any given time.
Grandstream Networks, Inc.
GXP21xx User Manual
Page 40 of 41
Firmware version: 1.0.1.66
Last Updated: 05/2011
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Restore Factory Default Setting
WARNING: Restoring the Factory Default Setting will delete all configuration information of the phone.
Please backup or print all the settings before you restoring factory default settings. We are not responsible
for restoring lost parameters and cannot connect your device to your VoIP service provider.
INSTRUCTIONS FOR RESTORATION:
Step 1: Press “OK” button to bring up the keypad configuration menu, select “Config”, press “OK” to
enter submenu, select “Factory Reset” (Please refer to Table 5-1 of keypad flow chart)
Step 2: Enter the MAC address printed on the bottom of the sticker. Please use the following mapping:
0-9: 0-9
A:
B:
22 (press the “2” key twice, “A” will show on the LCD)
222
C: 2222
D: 33 (press the “3” key twice, “D” will show on the LCD)
E: 333
F: 3333
Example: if the MAC address is 000b8200e395, it should be key in as “0002228200333395”.
NOTE: If there are digits like “22” in the MAC, you need to type “2” then press “->” right arrow key to
move the cursor or wait for 4 seconds to continue to key in another “2”.
Step 3: Press the “OK” button to move the cursor to “OK”. Press “OK” button again to confirm. If the
MAC address is correct, the phone will reboot. Otherwise, it will exit to previous keypad menu interface.
Grandstream Networks, Inc.
GXP21xx User Manual
Page 41 of 41
Firmware version: 1.0.1.66
Last Updated: 05/2011
Download from Www.Somanuals.com. All Manuals Search And Download.
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