Grandstream Networks GXP2124 User manual

Grandstream Networks, Inc.
GXP2124 SIP Enterprise Phone

Grandstream Networks, Inc. GXP2124 User Manual Page 1 of 46
Firmware version: 1.0.3.19 Last Updated: 02/2012
TABLE OF CONTENTS
GXP2124 USER MANUAL
WELCOME .................................................................................................................................................................3
INSTALLATION.........................................................................................................................................................4
EQUIPMENT PACKAGING.............................................................................................................................................4
CONNECTING YOUR PHONE ........................................................................................................................................4
SAFETY COMPLIANCES................................................................................................................................................4
WARRANTY.................................................................................................................................................................4
PRODUCT OVERVIEW............................................................................................................................................5
USING THE GXP2124 SIP ENTERPRISE PHONE...............................................................................................8
GETTING FAMILIAR WITH THE LCD............................................................................................................................8
MAKING PHONE CALLS.............................................................................................................................................11
ANSWERING PHONE CALLS.......................................................................................................................................14
PHONE FUNCTIONS DURING A PHONE CALL .............................................................................................................14
CALL FEATURES........................................................................................................................................................17
CUSTOMIZED LCD SCREEN &XML.........................................................................................................................18
CONFIGURATION GUIDE......................................................................................................................................18
CONFIGURATION VIA KEYPAD..................................................................................................................................19
CONFIGURATION VIA WEB BROWSER......................................................................................................................22
SAVING THE CONFIGURATION CHANGES...................................................................................................................43
REBOOTING THE PHONE REMOTELY..........................................................................................................................43
SOFTWARE UPGRADE & CUSTOMIZATION..................................................................................................44
FIRMWARE UPGRADE THROUGH TFTP/HTTP..........................................................................................................44
CONFIGURATION FILE DOWNLOAD ...........................................................................................................................45
RESTORE FACTORY DEFAULT SETTING.......................................................................................................46
TABLE OF FIGURES
GXP2124 USER MANUAL
Figure 1: Keypad GUI Flow...........................................................................................................20
TABLE OF TABLES
GXP2124 USER MANUAL
Table 1: Equipment Packaging.......................................................................................................4
Table 2: GXP2124 Connectors.......................................................................................................4
Table 3: GXP2124 Feature Guide ..................................................................................................5
Table 4: GXP2124 Key Features in a Glance.................................................................................5
Table 5: GXP2124 Hardware Specifications...................................................................................6
Table 6: GXP2124 Technical Specifications...................................................................................6
Table 7: LCD Display Definition......................................................................................................8
Table 8: LCD Icons .........................................................................................................................9
Table 9: GXP2124 Keypad Buttons..............................................................................................10

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Table 10: GXP2124 Call Features................................................................................................17
Table 11: Key Pad Configuration Menu........................................................................................19
Table 12: Device Configuration - Status.......................................................................................23
Table 13: Device Configuration –Settings/Basic Settings............................................................23
Table 14: Device Configuration –Settings /Advanced Settings ...................................................28
Table 15: SIP Account Settings ....................................................................................................35
GUI INTERFACE EXAMPLES
GXP2124 USER MANUAL
http://www.grandstream.com/products/gxp_series/general/documents/GXP2124_gui.zip
1. Screenshot of Configuration Login Page
2. Screenshot of Status Page
3. Screenshot of Basic Setting Configuration Page
4. Screenshot of Advanced User Configuration Page
5. Screenshot of SIP Account Configuration Page
6. Screenshot of Saved Configuration Changes Page
7. Screenshot of Reboot Page

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Welcome
GXP2124 is a next generation enterprise grade IP phone that features 240x120 backlit graphical LCD, 4
line keys with up to 4 SIP accounts, 4 dedicated XML programmable context-sensitive soft keys, 24+4
XML programmable speed-dial/BLF extension keys, dual network ports with integrated PoE, 5-way
conference, and Electronic Hook Switch (EHS). The GXP2124 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 IP PBX/Soft Switch/IMS platforms. It is an
ideal solution for enterprise users looking for a high quality, feature rich multi-line IP phone with many
extension keys.
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 GXP2124 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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Installation
EQUIPMENT PACKAGING
Table 1: Equipment Packaging
GXP2124
Main Case
Yes
Handset
Yes
Phone Cord
Yes
Power Adaptor
Yes
Ethernet Cable
Yes
Phone Stand
Yes
Wall Mount
Yes
CONNECTING YOUR PHONE
The connectors of the GXP2124 are located on the bottom of the device.
Table 2: GXP2124 Connectors
PC
10/100Mbps RJ-45 ports for PC (downlink) connection.
LAN
10/100Mbps RJ-45 port for LAN (uplink) connection. Supports PoE (802.3af).
Power Jack
5V DC power port; UL Certified.
Headset Jack
RJ9, supporting EHS (Electronic Hook-Switch) with Plantronics headsets
Handset Jack
RJ9.
SAFETY COMPLIANCES
The GXP2124 complies with FCC/CE and various safety standards. The GXP2124 power adaptor is
compliant with the UL standard. Only use the universal power adaptor provided with the GXP2124 package.
The manufacturer‟s warranty does not cover damages to the phone caused by unsupported power adaptors.
WARRANTY
If you purchased your GXP2124 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: GXP2124 Feature Guide
Features
GXP2124
LCD Display
240x120 pixel backlit graphical LCD, 8 level grayscale
Number of Lines
4 lines with 4 SIP accounts
Programmable Speed-dial/BLF Keys
24+4
XML Programmable Soft Keys
4
Table 4: GXP2124 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,
802.1x, LLDP, LDAP, TR-069, TLS, SRTP, IPV6
Superb Audio Quality
HD wideband audio, superb full-duplex hands-free speakerphone
with advanced acoustic echo cancellation and excellent double-talk
performance
Network Interfaces
Dual switched auto-sensing 10/100mbps Network ports with
integrated PoE
Feature Rich
Traditional voice features including caller ID, call waiting, hold,
transfer, forward, block, auto answer, 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 send/redial, speakerphone, headset, transfer,
conference (for up to 5 parties), mute, message, phone book and
volume, large phonebook (up to 2000 contacts) and call history (up
to 500 records)
Advanced Functionality
Customized downloadable ring-tones, multi-language support, LCD
content customization via XML, XML application, built-in
personalized application service (e.g., local weather, stock,
currency and etc.), adjustable positioning angles, wall mountable,
Automatic provisioning using TR-069 or encrypted XML
configuration file, TLS/SRTP/HTTPS for advanced security
protection, 802.1x for media access control

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Table 5: GXP2124 Hardware Specifications
Model
GXP2124
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
240x120 pixel
Expansion Module Support
No
Headset Jack
RJ9, supporting EHS (Electronic Hook-Switch) with Plantronics headsets
Call Appearance LED
Dual color (green/red)
Power over Ethernet
IEEE 802.3af standard
Universal Switching
Input: 100-240VAC 50-60 Hz
Power Adaptor
Output: +5VDC, 800mA, UL certified
Dimension
222mm(W) x 210mm(L) x 93mm(H)
Weight
Unit weight: 0.98KG; Package weight: 1.63KG
Temperature
32 –104° F/ 0 –40°C
Humidity
10% –90% (non-condensing)
Compliance
FCC Part 15 (CFR 47) Class B; EN55022 Class B, EN55024, EN61000-
3-2, EN61000-3-3, EN 60950-1; AS/NZS CISPR 22 Class B, AS/NZS
CISPR 24, RoHS; UL 60950 (power adapter)
Table 6: GXP2124 Technical Specifications
Protocols/Standards
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, 802.1x, LLDP, LDAP, TR-069, TLS,
SRTP, IPV6
Network Interfaces
Dual switched 10/100Mbps ports with integrated PoE
Graphic Display
Backlit 240x120 graphic LCD display with up to 8 level grayscale
Feature Keys
4 line keys with up to 4 SIP accounts, 4 XML programmable context sensitive
soft keys, 24+4 speed-dial/BLF extension keys with dual-color LED, 5
navigation/menu Keys, 9 dedicated function keys for: MUTE, PHONEBOOK,
MESSAGE (with LED Indicator), HEADSET, TRANSFER, CONFERENCE,
SEND/REDIAL, SPEAKERPHONE, VOLUME
Voice Codec
Support for G.723.1, G.729A/B, G.711u/a-law, G.726, G.722 (wideband), and
iLBC, in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Telephony Features
Hold, transfer, forward, 5-way conference, busy-lamp-field (BLF), call park,
pickup, shared-call-appearance (SCA)/bridged-line-appearance (BLA),
downloadable phone book (XML, LDAP, up to 2,000 items), call waiting, call
log (up to 500 records), XML customization of screen, off-hook auto dial, auto
answer, click-to-dial, flexible dial plan, hot desking, personalized music
ringtones and music on hold, server redundancy and fail-over
HD Audio
Yes, both on handset and speakerphone
Headset Jack
RJ9, supporting EHS (Electronic Hook-Switch ) with Plantronics headsets
Base Stand
Yes, allow 2-angel positions
Wall Mountable
Yes

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QoS
Layer 2 (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
Security
User and administrator level passwords, MD5 and MD5-sess based
authentication, AES based secure configuration file, SRTP, TLS, 802.1x media
access control
Multi-language
English, German, Italian, French, Spanish, Portuguese, Russian, Croatian,
Chinese, Korean, Japanese
Upgrade/Provisioning
Firmware upgrade via TFTP/HTTP/HTTPS, mass provisioning using TR-069 or
encrypted XML configuration file
Power and Green
Energy Efficiency
Universal power adapter included:
Input: 100-240VAC 50-60Hz; Output: +5VDC, 800mA;
Integrated Power-over-Ethernet (802.3af)
Max power consumption 2.5W (power adapter) or 3W (PoE)
Physical
Dimension: 222mm (W) x 210mm (L) x 93mm (H)
Unit weight: 0.98KG
Package weight: 1.63KG
Temperature and
Humidity
32–104oF / 0–40oC, 10 - 90% (non-condensing)
Package Content
GXP2124 phone, handset with cord, base stand, universal power supply,
network cable, Quick Start Guide
Compliance
FCC Part 15 (CFR 47) Class B
EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN 60950-1
AS/NZS CISPR 22 Class B, AS/NZS CISPR 24, RoHS
UL 60950 (power adapter)

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Using the GXP2124 SIP Enterprise Phone
GETTING FAMILIAR WITH THE LCD
GXP2124 has a dynamic and customizable screen. The screen displays differently depending on whether
the phone is idle or in use (active screen).
Table 7: LCD Display Definition
Item
Definitions
DATE AND TIME
Displays the current date and time. Can be synchronized with Internet
time servers.
LOGO
Displays company logo name. This logo name can be customized via xml
screen customization.
NETWORK STATUS
Displays the status of the phone and network. It will indicate whether the
network is down, starting or running (IP address).
STATUS ICON
Shows the status of the phone, using icons as shown in the next table.
LINE STATUS
INDICATOR
Displays the name of the account that is in use. Select another account
by pressing the LINE key on the left side.
SOFTKEYS
The softkeys are context sensitive and will change depending on the
status of the phone. Typical functions assigned to softkeys are:
FORWARD ALL
Unconditionally forward the phone line to another phone.
MISSED CALL
This option shows up unanswered calls to this phone.
SWITCHSCR
Press this button to toggle between different idle screens.
REDIAL
Redial the last dialed number.
END CALL
Hang up phone.
REFRESHSTOCK
Refresh the stock information when stock is enabled.
REVERSECUR
Display the currency information in reverse order.
REFRESHCUR
Refresh the currency information when currency is enabled.

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SPECIAL SOFTKEYS
(Only When Integrated
with GXE5024/5028)
Call Parking:
Please refer to GXE5024/5028 Online User Manual for more information.
CallPark
When a GXP2124 dials out, the Call Park softkey will display on
screen. To park the call, press the “Call Park” button.
PickUp
When another GXP2124 goes off-hook, the Call Pickup softkey will
display on screen. To pick up the parked call, press the “Call Pickup”
button.
Call Queue:
Please refer to 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 8: LCD Icons
Icon
LCD Icon Definitions
DND (idle): ON when “Do Not Disturb” is activated in idle screen
DND (talking): ON when “Do Not Disturb” is activated in talking
Forward All: INDICATES all incoming calls will be forwarded to the
configured number
Forward on Busy: INDICATES calls will be forwarded when phone is
busy
Forward on No Answer: INDICATES calls will be forwarded if the
phone does not answer
Forward All and No Answer: INDICATES calls will be forwarded if
Forward All and Forward on No Answer are enabled
Keypad Locked: ON when the keypad is locked
Enter Keypad Unlock Password

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Voice Mail: ON when there are new voice messages
Instant Message: ON when there are new instant messages
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
Waiting For Response: Please wait for the phone system to response
before the keypad entry.
Handset Mode
Speaker Mode
Headset Mode
SRTP: SRTP is used during the call
MUTE
Call On Hold
Call Active
Conference Call
Table 9: GXP2124 Keypad Buttons
Key Button
Key Button Definitions
LINE KEYS
Line keys with LED, can be configured to 4 different SIP profiles
SEND/REDIAL; Enable/Disable handset mode
Transfer an ACTIVE call to another number
Press CONF button to connect Calling/Called party into conference
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
Enter to retrieve voice mails
Brings phonebook on screen

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Enable/Disable hands-free speaker
Volume up or down
Menu/OK key in the center of the navigation keys. Press to enter
menu when phone is in idle. Use it as OK key in keypad configuration
Navigation keys “Up” “Down” “Left” and “Right”
Press to navigate in menu options
During the call, press “Up” “Down” to adjust volume
0 –9, *, #
Standard phone keypad; press # key to send call; press * key to for
IVR functions
Multi Purpose Keys
24 MPKs on the right side of the phone and 4 MPKs on the right side
of the LCD (for BLF, Speed dial and etc)
MAKING PHONE CALLS
Handset, Speakerphone and Headset Mode
The GXP2124 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 port on the phone, which allows the user to
pick-up, speak, or hang-up calls.
Multiple SIP Accounts and Lines
GXP2124 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.
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 GXP2124 will flash the next available LINE in red.

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Completing Calls
There are six 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).
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.
When the phone is onhook, 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.
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

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Press OK key to display LCD: LINEx: PAGE.
Dial the phone number you want to Page/Intercom
Press SEND key.
6. VIA CALL RETURN:On the GXP2124, the Multiple Purpose Key (programmable hard key) has to be
configured as Call Return under Web GUI->Basic Settings configuration. No user name and user ID
has to be set on the Multiple Purpose Key for Call Return. After pressing the Call Return key, the last
answered number will be dialed out.
Take handset off hook
Press the configured Call Return 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.
If “Speed Dial Via Active Account” is selected instead of “Speed Dial” on that Multi Purpose Key, it will act
just like speed dial but based on the current active account. For instance, if the phone is offhook and account
4 is active, by pressing this key it will call the configured speed dial number using account 4.
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)
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.

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Quick IP Call Mode
The GXP2124 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 -- offhook the phone, dial #3 followed by SEND or #
192.168.0.2 calling 192.168.0.23 -- offhook the phone, dial #23 followed by SEND or #
192.168.0.2 calling 192.168.0.123 -- offhook the phone, dial #123 followed 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. 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
Enable DND feature in MENU->Preference, 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.
PHONE FUNCTIONS DURING A PHONE CALL
Call Waiting/ Call Hold
1. Hold:Place a call on hold by pressing the “HOLD” softkey during the call.
2. Resume: Resume call by pressing the corresponding blinking LINE.

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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
GXP2124 supports both Blind and Attended transfer. Also, users could make auto-attended transfer when
this feature is enabled from web GUI.
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.
3. Auto-Attended Transfer: Users could enable Auto-Attended Transfer under Web GUI->Advanced
Setting Page. During the first call, press “TRANSFER” hard button and it will bring up another line.
The first call will be on hold. Enter the number and press SEND key to establish the second call (If
pressing soft key “transfer” after entering the number, it will do blind transfer instead). After the
second call is established, press “TRANSFER” hard button again. Now the phone will hang up and
the call will be transferred.
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
GXP2124 can host conference calls and supports up to 5-way conference calling.
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:
If after pressing the “CONF” button, a user decides not to conference anyone, press the
current active LINE button
This will resume two-way conversation with the current line

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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.
GXP2124 also supports Easy Conference mode. In Easy Conference mode, users can initiate conference
by calling another number when the current line is in talking or conference. Also the conference can be re-
established by pressing the ReConf softkey when the conference is on hold. Easy Conference mode can be
used combined with the traditional ways to establish the 5-way conference above.
1. Initiate a Conference Call:
Establish one call
Press CONF button and a new line will be brought up
Dial the number and press SEND button to establish the second call
Press CONF button again or press the ConfCall softkey to establish the 3-way conference
2. Join More Parties in Existed Conference:
Establish conference call
Press CONF button and a new line will be brought up
Dial the number and press SEND button to establish the new call
Press CONF button again or press the ConfCall softkey to join the new party in the existed
conference
3. Hold Conference:
During the conference, press HOLD button and the conference will be put on hold
-To resume the conference, press the ReConf softkey
- To split the conference and resume the call with each party, press the corresponding
line key
4. End Conference:
If the users decide not to conference after establishing the second call, press EndCall
softkey instead of ConfCall softkey/CONF button. It will end the second call and the screen
will show the first call/conference is on hold.
During the conference, press EndCall softkey or hang up to end the conference
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.
When using Easy Conference mode, press SEND button to establish the second call after entering
the number instead of using “#”.
For the 4-way and 5-way traditional conference call, PCMU and PCMA are supported for the codec
being used in the conference.
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:

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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 GXP2124 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.
CALL FEATURES
The GXP2124 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 10: GXP2124 Call Features
Key
Call Features
*30
Block Caller ID (for all subsequent calls)
Offhook and dial “*30”.
*31
Send Caller ID (for all subsequent calls)

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Offhook and dial “*31”.
*67
Block Caller ID (per call)
Offhook, dial “*67” and then enter the number to dial out.
*82
Send Caller ID (per call)
Offhook, dial “*82” and then enter the number to dial out.
*70
Disable Call Waiting (per Call)
Offhook, dial “*70” and then enter the number to dial out.
*71
Enable Call Waiting (per Call)
Offhook, dial “*71” and then enter the number to dial out.
*72
Unconditional Call Forward
Offhook, dial “*72”. Then enter the number to forward the call. Press OK softkey or
SEND button.
*73
Cancel Unconditional Call Forward
Offhook, dial “*73” and the phone will hang up.
*90
Busy Call Forward
Offhook, dial “*90”. Then enter the number to forward the call. Press OK softkey or
SEND button.
*91
Cancel Busy Call Forward
Offhook, dial “*91” and the phone will hang up.
*92
Delayed Call Forward
Offhook, dial “*92”. Then enter the number to forward the call. Press OK softkey or
SEND button.
*93
Cancel Delayed Call Forward
Offhook, dial “*93” and the phone will hang up.
CUSTOMIZED LCD SCREEN &XML
Grandstream GXP2124 Enterprise IP phone supports 1) XML Custom Screen and 2) XML Downloadable
Phonebook. Please refer to the following link for documentation and templates.
1) XML Custom Screen (custom idle screen logo, softkeylayout and etc.)
http://www.grandstream.com/products/gxp_series/general/documents/GXP21xx_1450_XML_Screen_Customizatio
n.rar
2) XML Downloadable Phonebook
http://www.grandstream.com/products/gxp_series/general/documents/gxp_wp_xml_phonebook.pdf

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Configuration Guide
The GXP2124 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 60 seconds.
Press the MENU button to enter the Key Pad Menu. The menu options available are listed in table 11.
Table 11: 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
LDAP Directory
Displays the LDAP directory and downloads directory
Instant Messages
Goes to instant messages
Direct IP Call
Dials IP address for direct IP call
Preference
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
Users can choose English, Simplified Chinese, Traditional Chinese,
Korean, Japanese, Italian, Spanish, French, German, Portuguese,
Russian, Croatian, Hungarian, Polish, Slovenian, Arabic, Hebrew or