Grandstream Networks GXP1450 User manual

Grandstream Networks, Inc.
GXP1450 SIP Enterprise Phone

Grandstream Networks, Inc. GXP1450 User Manual Page 1 of 42
Firmware 1.0.1.110 Last Updated: 01/2012
TABLE OF CONTENTS
GXP1450 USER MANUAL
WELCOME .................................................................................................................................................................3
INSTALLATION.........................................................................................................................................................4
EQUIPMENT PACKAGING.............................................................................................................................................4
CONNECTING YOUR PHONE ........................................................................................................................................4
SAFETY COMPLIANCES................................................................................................................................................4
WARRANTY.................................................................................................................................................................4
PRODUCT OVERVIEW............................................................................................................................................5
USING THE GXP1450 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 ......................................................................................................................................19
CONFIGURATION VIA KEYPAD..................................................................................................................................19
CONFIGURATION VIA WEB BROWSER ......................................................................................................................22
SAVING THE CONFIGURATION CHANGES...................................................................................................................39
REBOOTING THE PHONE REMOTELY .........................................................................................................................39
SOFTWARE UPGRADE & CUSTOMIZATION..................................................................................................40
FIRMWARE UPGRADE THROUGH TFTP/HTTP..........................................................................................................40
CONFIGURATION FILE DOWNLOAD ...........................................................................................................................41
RESTORE FACTORY DEFAULT SETTING.......................................................................................................42
TABLE OF FIGURES
GXP1450 USER MANUAL

Figure 1: GXP1450 Keypad Layout……………………………………………………………………. 10
Figure 2: Keypad GUI Flow............................................................................................................ 20
TABLE OF TABLES
GXP1450 USER MANUAL
Table 1: Equipment Packaging ....................................................................................................... 4
Table 2: GXP1450 Connectors ....................................................................................................... 4
Table 3: GXP1450 Feature Guide .................................................................................................. 5
Table 4: GXP1450 Key Features in a Glance................................................................................. 5
Table 5: GXP1450 Hardware Specifications................................................................................... 5
Table 6: GXP1450 Technical Specifications................................................................................... 6
Table 7: LCD Display Definition ...................................................................................................... 8
Table 8: LCD Icons ......................................................................................................................... 8

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Table 10: GXP1450 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 ................................................... 26
Table 15: SIP Account Settings .................................................................................................... 32
GUI INTERFACE EXAMPLES
GXP1450 USER MANUAL
http://www.grandstream.com/products/gxp_series/general/documents/gxp21xx_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
GXP1450 is a next generation enterprise grade IP phone that features 2 lines with 2 SIP accounts, a
180x60 backlit graphical LCD, 3 XML programmable context-sensitive soft keys, dual network ports with
integrated PoE and 3-way conference.
The GXP1450 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. It is a perfect choice for enterprise users looking for a high quality, feature rich IP
phone with affordable cost.
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 GXP1450 as it may cause damage to the
products and void the manufacturer warranty.
This document is subject to change without notice.
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 is not permitted.

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Installation
EQUIPMENT PACKAGING
Table 1: Equipment Packaging
GXP1450
Main Case Yes
Handset Yes
Phone Cord Yes
Power Adaptor Yes
Ethernet Cable Yes
Base Stand Yes
Quick Start Guide Yes
CONNECTING YOUR PHONE
The connectors of the GXP1450 are located on the bottom of the device.
Table 2: GXP1450 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
Handset Jack RJ9
SAFETY COMPLIANCES
The GXP1450 complies with FCC/CE and various safety standards. The GXP1450 power adaptor is
compliant with the UL standard. Only use the universal power adaptor provided with the GXP1450 package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power adaptors.
WARRANTY
If you purchased your GXP1450 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: GXP1450 Feature Guide
Features GXP1450
LCD Display 180x60 pixel
Number of Lines 2
Programmable Soft Keys 3
Extension Module N/A
Table 4: GXP1450 Key Features in a Glance
Features Benefits
Open Standards Compatible SIP RFC3261, TCP/IP/UDP, RTP, HTTP/HTTPS, ARP/RARP, ICMP,
DNS (A record, SRV and NAPTR), DHCP, PPPoE, TELNET, TFTP,
NTP, STUN, SIMPLE, TR-069, 802.1x, and etc
Superb Audio Quality Advanced Digital Signal Processing (DSP), Silence Suppression, VAD,
CNG, AGC
Network Interfaces Dual 10/100mbps Ethernet ports with integrated PoE
Feature Rich Traditional voice features including caller ID, call waiting, hold, transfer,
forward, block, auto-dial, off-hook dial
Advanced Features 2 line keys with dual-color LED and 2 SIP accounts, 3 way
conferencing, backlit graphic 180x60 LCD, 3 XML programmable
context sensitive soft keys, 5 navigation keys, 10 dedicated buttons for
HOLD, TRANSFER, CONFERENCE, VOLUME, HEADSET, MUTE,
SPEAKERPHONE, SEND/REDIAL, PHONEBOOK, MESSAGE
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 5: GXP1450 Hardware Specifications
GXP1450
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 180x60 pixel
Expansion Module Support N/A
Headset Jack RJ9
Call Appearance LED 2 Dual color (green/red)
Power over Ethernet Built-in auto-sensing: Cisco and IEEE 802.3af standard
Universal Switching Input: 100-240VAC 50-60 Hz
Power Adaptor Output: +5VDC, 800mA, UL certified

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Dimension 186mm (W) x 210mm (L) x 81mm (D)
Weight 0.8KG
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: GXP1450 Technical Specifications
Lines 2 lines with 2 independent SIP accounts
Protocol Support Support SIP 2.0, TCP/UDP/IP, PPPoE, RTP, SRTP by SDES, HTTP,
ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SIMPLE, TR-069, 802.1x
Support 2 SIP accounts
Support SIP Dialog package (RFC 4235)
Support for SIP MESSAGE method (RFC 3428)
Display Backlit graphic LCD display, up to 4 level grayscale
Feature Keys HOLD, TRANSFER, CONF, VOLUME, HEADSET, MUTE,
SPEAKERPHONE, SEND/REDIAL, PHONEBOOK, MESSAGE, 3 XML
Programmable Softkeys, 5 Navigation keys,
Device
Management
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed
devices including behind firewall/NAT
Auto/manual provisioning system, Web GUI Interface
Address Book
Audio Features Full-duplex hands-free speakerphone
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
Adaptive jitter buffer control (patent-pending) and packet delay and 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
3-way conference, dial plan prefix, dial-plan support, off-hook auto dial,
auto answer, early dial and speed dial

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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 for IEEE 802.1p/Q tagging (VLAN), Layer 3 ToS
Firmware Upgrade 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 GXP1450 SIP Enterprise Phone
GETTING FAMILIAR WITH THE LCD
GXP1450 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/NAME 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). “## MISSED CALLS” is
shown here too.
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 soft-buttons 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.
NEXTSCR
Press this button to toggle between idle screen, weather and IP Address.
REDIAL
Redials the last number.
END CALL
Hangs up phone.
Table 8: LCD Icons
Icon LCD Icon Definitions
DND (idle): ON when “Do Not Disturb” is activated in idle screen

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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 Password: Enter the keypad password to unlock the
keypad
Voice Mail: ON when there are new voice 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

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FIGURE 1: GXP1450 KEYPAD LAYOUT
Table 9: GXP1450 Keypad Buttons
Key Button Key Button Definitions
LINE KEYS 2 Line keys with LED, can be configured to different SIP profiles
HOLD Place ACTIVE call on hold
TRANSFER Transfer an ACTIVE call to another number
CONF Press CONF button to connect Calling/Called party into conference
Enter to retrieve voice mails or other messages
Brings phonebook on screen
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
Enable/Disable hands-free speaker
Enable/Disable handset mode ; or used as SEND/REDIAL
Press on “–” or “+” of the button to adjust the volume for
handset/speakerphone/headset when the phone in idle or during call

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MENU/OK (The round button in the center):
Enter Keypad Configuration “MENU” mode when phone is in
IDLE mode
Use as ENTER/OK key when in Keypad Configuration.
Navigation keys “Up” “Down” “Left” and “Right”
Press to navigate in menu options
When the phone is idle, press “Up” to view missed call; press
“Down” to view phonebook
0 - 9, *, # Standard phone keypad; press # key to send call; press * key to for
IVR functions
MAKING PHONE CALLS
Handset, Speakerphone and Headset Mode
The GXP1450 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
headset mode, the user must plug the headset to an RJ9 port on the back of the phone, which allows the
user to pick up, speak or hang up calls.
Multiple SIP Accounts and Lines
GXP1450 can support up to two 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 GXP1450 will flash the next available LINE 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:

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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” softkey
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 second SIP account was made for the last call/call attempt, the phone will use the second
account to redial.
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 softkey
3. USING THE CALL HISTORY:To call a phone number in the phone’s 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 second SIP account, the phone will use the
second 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 in from the phone’s 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/OK round button and
Selecting “Phone Book” and
Press MENU/OK again to enter the phonebook entries
Select the phone number by using the arrow keys
Press MENU/OK so select
Press the DOWN arrow key to select “Dial”
Press MENU/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 and dial tone will be heard
Press MENU/OK key to display LCD: LINEx: PAGE
Dial the phone number you want to Page/Intercom
Press SEND key

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NOTE: Dial tone and dialed number display occurs after the phone 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 in
offhook mode. Press the “SEND” (or “#” button if # is configured to be used as Dial) to override the 4 second
delay.
Making Calls using IP Addresses
Direct IP calling 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 refer to 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 GXP1450 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

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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 in 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
1. Press the menu button, and scroll down to “Preference”.
2. Select “Do Not Disturb” by pressing menu button.
3. Use arrow keys to either enable or disable “Do Not Disturb” feature.
4. When enabled, there will be a special “Do Not Disturb” icon appearing on the display. This will send
the incoming caller directly to voicemail (if the callee has voicemail set up).
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
GXP1450 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. Press the “SEND” button (or #
key), or simply hang up the call to complete transfer of active call.

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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 the transfer is complete.
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.
3-Way Conferencing
GXP1450 can host conference calls and supports up to 3-way conference calling.
1. Initiate a Conference Call:
Establish a connection with two parties
Press CONF button
Choose the desired line to join the conference by pressing the corresponding LINE button
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
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
GXP1450 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 3-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

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- 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 “#”.
Voice Messages (Message Waiting Indicator)
A blinking red MWI (Message Waiting Indicator) indicates a message is waiting. Press the MSG 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.
Shared Call Appearance (SCA)
The GXP1450 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
GUI 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.

Grandstream Networks, Inc. GXP1450 User Manual Page 17 of 42
Firmware 1.0.1.110 Last Updated: 01/2012
CALL FEATURES
The GXP1450 supports traditional and advanced telephony features including caller ID, caller ID w/name,
call forward/transfer/park/hold as well as intercom/paging.
Table 10: GXP1450 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)
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.

Grandstream Networks, Inc. GXP1450 User Manual Page 18 of 42
Firmware 1.0.1.110 Last Updated: 01/2012
CUSTOMIZED LCD SCREEN &XML
GXP1450 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, softkey layout 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

Grandstream Networks, Inc. GXP1450 User Manual Page 19 of 42
Firmware 1.0.1.110 Last Updated: 01/2012
Configuration Guide
The GXP1450 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, delete an entry by pressing the MUTE/DEL button. 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 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
Dutch which are built in the phone. Users could select Automatic for