Grandstream Networks GXP1610 User manual

GXP1610/GXP1620/GXP1625/GXP1628 User Guide
Grandstream Networks, Inc.
GXP1610/GXP1620/GXP1625/GXP1628
IP Small Business IP Phone
User Guide

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 1 of 35
GXP1610/GXP1620/GXP1625/GXP1628 User Guide
Index
DOCUMENT PURPOSE.............................................................................5
GNU GPL INFORMATION..........................................................................6
WELCOME.................................................................................................7
PRODUCT OVERVIEW..............................................................................9
FEATURE HIGHTLIGHTS .....................................................................................................................9
GXP1610/GXP1620/GXP1625/GXP1628 TECHNICAL SPECIFICATIONS .........................................9
INSTALLATION.........................................................................................13
EQUIPMENT PACKAGING .................................................................................................................13
CONNECTING YOUR PHONE ...........................................................................................................13
STAND INSTALLATION……………………………………………………………………………………… 14
WALL MOUNT INSTALLATION…………………………………………………………………………….. 15
SAFETY COMPLIANCES....................................................................................................................16
WARRANTY.........................................................................................................................................16
GETTING TO KNOW GXP1610/GXP1620/GXP1625/GXP1628 ..............17
IDLE SCREEN .....................................................................................................................................17
USING THE KEYPAD ..........................................................................................................................19
MAKING PHONE CALLS.....................................................................................................................21
HANDSET, SPEAKER AND HEADSET MODE ...........................................................................21
SIP ACCOUNTS AND LINES .......................................................................................................21
COMPLETING CALLS..................................................................................................................22
MAKING CALLS USING IP ADDRESSES ...................................................................................24
ANSWERING PHONE CALLS ............................................................................................................25
RECEIVING CALLS......................................................................................................................25
DO NOT DISTURB .......................................................................................................................25
DURING A PHONE CALL ....................................................................................................................26
CALL RECORDING......................................................................................................................26
CALL WAITING/CALL HOLD .......................................................................................................26
MUTE............................................................................................................................................26
CALL TRANSFER ........................................................................................................................26
3-WAY CONFERENCING ............................................................................................................28
VOICE MESSAGES (MESSAGE WAITING INDICATOR) ...........................................................29

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 2 of 35
VOICEMAIL ..................................................................................................................................30
SHARED CALL APPEARANCE (SCA) ........................................................................................30
CALL FEATURES ................................................................................................................................31
CONNECTING TO DEVICES ...................................................................33
EHS HEADSET....................................................................................................................................33
RESTORE FACTORY DEFAULT SETTINGS ...........................................35
EXPERIENCING THE GXP1610/GXP1620/GXP1625/GXP1628 .............37

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 3 of 35
Table of Tables
GXP1610/GXP1620/GXP1625/GXP1628 User Guide
Table 1: GXP1610 Technical Specifications..................................................................................................9
Table 2: GXP1620/GXP1625 Technical Specifications ...............................................................................10
Table 3: GXP1628 Technical Specifications................................................................................................11
Table 4: GXP1610/GXP1620/GXP1625/GXP1628 Equipment Packaging.................................................13
Table 5: GXP1610/GXP1620/GXP1625/GXP1628 Connectors .................................................................13
Table 6: LCD DISPLAY DEFINITIONS........................................................................................................17
Table 7: GXP1610/GXP1620/GXP1625/GXP1628 LCD Icons ...................................................................18
Table 8: GXP1610/GXP1620/GXP1625/GXP1628 Front View Definitions.................................................20
Table 9: GXP1610/GXP1620/GXP1625/GXP1628 Call Features ..............................................................31

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 4 of 35
Table of Figures
GXP1610/GXP1620/GXP1625/GXP1628 User Guide
Figure 1: GXP16xx Back View (Use GXP162x as example) ......................................................................13
Figure 2: GXP16xx Stand Installation .........................................................................................................13
Figure 3: GXP16xx Wall Mount Installation ................................................................................................13
Figure 4: GXP16XX Idle Screen .................................................................................................................17
Figure 5: GXP16xx Front View (Use GXP162x as example)......................................................................19

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 5 of 35
DOCUMENT PURPOSE
This User Guide describes the basic concept and tasks necessary to use and configure your
GXP1610/GXP1620/GXP1625/GXP1628. This document covers the topics of phone installation, making
basic calls and using basic call features.
To learn the advanced features and configurations, please visit http://www.grandstream.com/support to
download the latest "GXP1610/GXP1620/GXP1625/GXP1628 Administration Guide".

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 6 of 35
GNU GPL INFORMATION
GXP1610/GXP1620/GXP1625/GXP1628 firmware contains third-party software licensed under the GNU
General Public License (GPL). Grandstream uses software under the specific terms of the GPL. Please
see the GNU General Public License (GPL) for the exact terms and conditions of the license.
Grandstream GNU GPL related source code can be downloaded from Grandstream Web site from:
http://www.grandstream.com/support/faq/gnu_gpl.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 7 of 35
WELCOME
Thank you for purchasing Grandstream Small Business IP phone GXP1610/GXP1620/GXP1625
/GXP1628. It is a next generation small-to-medium business IP phone: the GXP1620/GXP1625/GXP1628
features 2 lines with 2 SIP accounts, superior HD wideband audio, 132 x 48 backlit graphical LCD; the
GXP1610 supports 2 lines with 1 SIP account, 132 x 48 graphical LCD. The GXP1610/GXP1620/
GXP1625/GXP1628 delivers rich features of 3 XML programmable context-sensitive soft keys, 8 BLF keys
(GXP1628 only), dual network ports with PoE (GXP1625/GXP1628 only), EHS (Electronic Hook-Switch)
with Plantronics headsets, and 3-way conference, superb full-duplex hands-free speakerphone with
advanced acoustic echo cancellation, advanced security protection for privacy, and compatible with
Grandstream UCM Features. It is a perfect choice for small-to-medium businesses looking for a high quality,
feature rich IP phone with affordable cost.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 8 of 35
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 GXP1610/GXP1620/GXP1625/GXP1628 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 here:
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.
FCC Caution:
Any Changes or modifications not expressly approved by the party responsible for compliance could void
the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 9 of 35
PRODUCT OVERVIEW
FEATURE HIGHTLIGHTS
132*48 pixel backlit graphical LCD display(GXP1610 doesn’t support backlit)
2 dual-color line keys, 3 XML programmable context-sensitive soft keys, 8 BLF keys (GXP1628
only), 3-way conference, multi-language support
HD wideband audio (GXP1620/GXP1625/GXP1628 only), superb full-duplex hands-free
speakerphone with advanced acoustic echo cancellation and excellent double-talk performance
Large phonebook (up to 500 contacts) and call history (up to 200 records)
Automated personal information service (e.g., local weather, etc.), personalized music ring
tone/ring back tone, flexible customizable screen content & format using XML, and advanced Web
and enterprise applications, local weather service
Dual switched 10/100 Mbps ports on GXP1610/GXP1620/GXP1625, dual switched auto-sensing
10/100/1000 Mbps Ethernet ports on GXP1628, integrated PoE on GXP1625/GXP1628
Automated provisioning using TR-069 or encrypted XML configuration file, SRTP and TLS for
advanced security protection, 802.1x for media access control
Perfectly compatible with Grandstream UCM Features
Innovative UI design(easy and useable multi-language support )
Use with Grandstream’s UCM61xx series IP PBX appliance for Zero-Config provisioning, 1-touch
call recording and more
GXP1610/GXP1620/GXP1625/GXP1628 TECHNICAL SPECIFICATIONS
Table 1: GXP1610 Technical Specifications
Protocols/Standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP,
DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN,
SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP
Network Interfaces
Dual switched auto-sensing 10/ 100 Mbps Ethernet ports
Graphic Display
132*48 LCD display
Feature Keys
2 line keys with dual-color LED and 1 SIP account. 3 XML programmable
context sensitive soft keys. 5 (navigation, menu) keys. 13 dedicated
function keys for PAGE/INTERCOM, PHONEBOOK, MESSAGE, HOME,
HOLD, RECORD, MUTE, HEADSET, TRANSFER, CONFERENCE, SEND
and REDIAL, SPEAKERPHONE, VOLUME
Voice Codecs
Support for G.711µ/a, G.722 (wide-band), G.723 (pending), G.726-32,
G.729 A/B, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO)
Telephony Features
Hold, transfer, forward (unconditional/no-answer/busy), 3-way conference,
call park/pickup, downloadable phone book (XML, LDAP, up to 500 items),
call waiting, call history (up to 200 records), off-hook auto dial, auto answer,

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 10 of 35
click-to-dial, flexible dial plan, hot desking, personalized music ringtones,
server redundancy & fail-over
Headset Jack
RJ9 headset jack (allowing EHS with Plantronics headsets)
Base Stand
Yes, allow 2 angle positions available, Wall Mountable
QoS
Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS
Security
User and administrator level access control, MD5 and MD5-sess based
authentication, 256-bit AES encrypted configuration file, TLS, SRTP,
HTTPS, 802.1x media access control
Multi-language
English, German, Italian, French, Spanish, Portuguese, Russian, Croatian,
simplified and traditional Chinese, Korean, Japanese, and more
Upgrade/Provisioning
Firmware upgrade via TFTP / HTTP / HTTPS, mass provisioning using TR-
069 or AES encrypted XML configuration file
Power & Green Energy
Efficiency
Universal Power Supply Input 100-240VAC 50-60Hz; Output +5VDC, 600mA
Temperature and
Humidity
Operation: 0°C to 40°C
Storage: -10°C to 60°C
Humidity: 10％ to 90% Non-condensing
Physical
Dimension: 209mm（L）x 184.5mm（W）x 76.2mm（H） (with handset)
Unit Weight: 0.74kg Package Weight: 1.1kg
Package Content
GXP1610 phone, handset with cord, base stand, universal power supply,
network cable, Quick Installation Guide, brochure, GPL license
Compliance
FCC: Part 15 (CFR 47) Class B
CE : EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-
1
RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950; AS/NZS
60950.1
Table 2: GXP1620/GXP1625 Technical Specifications
Protocols/Standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP,
DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN,
SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP
Network Interfaces
Dual switched 10/ 100 Mbps ports, integrated PoE (GXP1625 only)
Graphical Display
132*48 pixel backlit graphical LCD display
Feature Keys
2 line keys with dual-color LED and 2 SIP account. 3 XML programmable
context sensitive soft keys. 5 (navigation, menu) keys. 13 dedicated
function keys for MUTE, HEADSET, TRANSFER, CONFERENCE, SEND
and REDIAL, SPEAKERPHONE, VOLUME, PHONEBOOK, MESSAGE,
HOLD, PAGE/INTERCOM, RECORD, HOME
Voice Codecs
Support for G.711µ/a, G.722 (wide-band), G.723 (pending), G.726-32,
G.729 A/B, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO)
Telephony Features
Hold, transfer, forward (unconditional/no-answer/busy), call park/pickup, 3-
way conference, shared-call-appearance (SCA) / bridged-line-appearance
(BLA), downloadable phone book (XML, LDAP, up to 500 items), call
waiting, call history (up to 200 records), off-hook auto dial, auto answer,
click-to-dial, flexible dial plan, hot desking, personalized music ringtones,
server redundancy & fail-over.
Headset Jack
RJ9 headset jack (allowing EHS with Plantronics headsets)
HD Audio
Yes, HD handset and speakerphone with support for wideband audio
Base Stand
Yes, 2 angle positions available, Wall Mountable
QoS
Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 11 of 35
Security
User and administrator level access control, MD5 and MD5-sess based
authentication, 256-bit AES encrypted configuration file, TLS, SRTP,
HTTPS, 802.1x media access control
Multi-language
English, German, Italian, French, Spanish, Portuguese, Russian, Croatian,
simplified and traditional Chinese, Korean, Japanese, and more
Upgrade/Provisioning
Firmware upgrade via TFTP / HTTP / HTTPS, mass provisioning using TR-
069 or AES encrypted XML configuration file
Power & Green Energy
Efficiency
Universal Power Supply Input 100-240VAC 50-60Hz; Output +5VDC, 600mA
PoE IEEE802.3 af Class 2, 3.84W-6.49W(GXP1625 only)
Temperature and
Humidity
Operation: 0°C to 40°C
Storage: -10°C to 60°C
Humidity: 10％ to 90% Non-condensing
Physical
Dimension: 209mm（L）x 184.5mm（W）x 76.2mm（H） (with handset)
Unit Weight: 0.73kg Package Weight: 1.1kg
Package Content
GXP1620/GXP1625 phone, handset with cord, base stand, universal
power supply, network cable, Quick Installation Guide, brochure, GPL
license
Compliance
FCC: Part 15 (CFR 47) Class B
CE : EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-
1
RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950; AS/NZS
60950.1
Table 3: GXP1628 Technical Specifications
Protocols/Standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP,
DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN,
SIMPLE, LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP
Network Interfaces
Dual switched auto-sensing 10/100/1000 Mbps Ethernet ports, integrated
PoE
Graphical Display
132 x 48 backlit graphical LCD display
Feature Keys
2 line keys with dual-color LED and 2 SIP account. 3 XML programmable
context sensitive soft keys. 5 (navigation, menu) keys. 8 BLF keys. 13
dedicated function keys for PAGE/INTERCOM, PHONEBOOK,
MESSAGE, HOME, HOLD, RECORD, MUTE, HEADSET, TRANSFER,
CONFERENCE, SEND and REDIAL, SPEAKERPHONE, VOLUME
Voice Codecs
Support for G.711µ/a, G.722 (wide-band), G.723 (pending), G.726-32,
G.729 A/B, in-band and out-of-band DTMF (In audio, RFC2833, SIP INFO)
Telephony Features
Hold, transfer, forward (unconditional/no-answer/busy), call park/pickup, 3-
way conference, shared-call-appearance (SCA) / bridged-line-appearance
(BLA), downloadable phone book (XML, LDAP, up to 500 items), call
waiting, call history (up to 200 records), off-hook auto dial, auto answer,
click-to-dial, flexible dial plan, hot desking, personalized music ringtones,
server redundancy & fail-over.
Headset Jack
RJ9 headset jack (allowing EHS with Plantronics headsets)
HD Audio
Yes, HD handset and speakerphone with support for wideband audio
Base Stand
Yes, 2 angle positions available, Wall Mountable
QoS
Layer 2 QoS (802.1Q, 802.1P) and Layer 3 (ToS, DiffServ, MPLS) QoS
Security
User and administrator level access control, MD5 and MD5-sess based

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 12 of 35
authentication, 256-bit AES encrypted configuration file, TLS, SRTP,
HTTPS, 802.1x media access control
Multi-language
English, German, Italian, French, Spanish, Portuguese, Russian, Croatian,
simplified and traditional Chinese, Korean, Japanese, and more
Upgrade/Provisioning
Firmware upgrade via TFTP / HTTP / HTTPS, mass provisioning using TR-
069 or AES encrypted XML configuration file
Power & Green Energy
Efficiency
Universal Power Supply Input 100-240VAC 50-60Hz; Output +5VDC, 600mA
PoE IEEE802.3 af Class 2, 3.84W-6.49W
Temperature and
Humidity
Operation: 0°C to 40°C
Storage: -10°C to 60°C
Humidity: 10％ to 90% Non-condensing
Physical
Dimension: 220.5mm (L) x 192.5mm (W) x 76.0mm (H) (with handset)
Unit weight: 0.8kg; Package weight: 1.2kg
Package Content
GXP1628 phone, handset with cord, base stand, universal power supply,
network cable, Quick Installation Guide, brochure, GPL license, BLF label
cards
Compliance
FCC: Part 15 (CFR 47) Class B
CE : EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-
1
RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950; AS/NZS
60950.1

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 13 of 35
INSTALLATION
EQUIPMENT PACKAGING
Table 4: GXP1610/GXP1620/GXP1625/GXP1628 Equipment Packaging
Main Case
1
Handset
1
Phone Cord
1
5V DC Power Adaptor
1
Ethernet Cable
1
Phone Stand
1
Quick Installation Guide
1
BLF Name
Cards(GXP1628 only)
1
CONNECTING YOUR PHONE
Figure 1: GXP16xx Back View (Use GXP162x as example)
Table 5: GXP1610/GXP1620/GXP1625/GXP1628 Connectors
Slots for Phone Stand
Slots for the phone stand if placing the phone on a flat surface
PC Port
10/100M Ethernet to connect PC on GXP1610/GXP1620/GXP1625,
auto-sensing 10/100/1000M Ethernet to connect PC on GXP1628
LAN Port
10/100M Ethernet to connect LAN on GXP1610/GXP1620/GXP1625,
auto-sensing 10/100/1000M Ethernet to connect LAN on GXP1628,
integrated PoE（GXP1625/GXP1628 only）

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 14 of 35
DC 5V Power Port
5V/600mA power port to connect to power adaptor
HEADSET Port
To connect to RJ9 or EHS headphones
HANDSET Port
To connect handset RJ9
Cord Slot
To place and fix the phone cords
STAND INSTALLATION
Figure 2: GXP16xx Stand Installation
1. Insert the hooks on the top of the stand into the slots, you have option to use either upper slots OR
lower slots.
2. After both hooks are in the slots, firmly slide the entire stand upward to lock them in place.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 15 of 35
WALL MOUNT INSTALLATION
Figure 3: GXP16xx Wall Mount installation
1. Insert all 4 hooks into the slots.
2. Firmly slide the wall mount upward to lock it in place.
To set up the GXP1610/GXP1620/GXP1625/GXP1628, follow the steps below:
1. Attach the phone stand or wall mount to the back of the phone where there are slots;
2. Connect the handset and main phone case with the phone cord;
3. Connect the LAN port of the phone to the RJ45 socket of a hub/switch or a router (LAN side of the
router) using the Ethernet cable;
4. Connect the 5V DC output plug to the power jack on the phone; plug the power adapter into an electrical
outlet. If PoE switch is used in step 3, this step could be skipped;
5. The LCD will display provisioning or firmware upgrade information. Before continuing, please wait for
the date/time display to show up;
6. Using the keypad configuration menu or phone's embedded Web server (Web GUI) by entering the IP
address in Web browser, you can further configure the phone.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 16 of 35
SAFETY COMPLIANCES
The GXP1610/GXP1620/GXP1625/GXP1628 phone complies with FCC/CE and various safety standards.
The GXP1610/GXP1620/GXP1625/GXP1628 power adapter is compliant with the UL standard. Use the
universal power adapter provided with the GXP1610/GXP1620/GXP1625/GXP1628 package only. The
manufacturer’s warranty does not cover damages to the phone caused by unsupported power adapters.
WARRANTY
If the GXP1610/GXP1620/GXP1625/GXP1628 phone was purchased from a reseller, please contact the
company where the phone was purchased for replacement, repair or refund. If the phone was purchased
directly from Grandstream, contact the Grandstream Support for a RMA (Return Materials Authorization)
number before the product is returned. Grandstream reserves the right to remedy warranty policy without
prior notification.
Warning:
Use the power adapter provided with the phone. Do not use a different power adapter as this may damage
the phone. This type of damage is not covered under warranty.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 17 of 35
GETTING TO KNOW GXP1610/GXP1620/GXP1625/GXP1628
IDLE SCREEN
GXP1610/GXP1620/GXP1625/GXP1628 screen displays differently depending on whether the phone is
idle or in use (active). The following table describes the items displayed on the
GXP1610/GXP1620/GXP1625/GXP1628 idle screen.
Figure 4: GXP16XX Idle Screen
The following table describes the items displayed on the GXP1610/GXP1620/GXP1625/GXP1628 idle
screen.
Table 6: LCD DISPLAY DEFINITIONS
DATE AND TIME
Displays the current date and time. It can be synchronized with Internet time
servers.
NETWORK ICON
Shows the status of network. It will indicate whether the network is down or
starting.
STATUS ICON
Shows the status of the phone for registration status, call features and etc., using
icons as shown in the next table.
SOFTKEYS in Idle
Screen
The softkeys are context sensitive and will change depending on the status of
the phone. Typical functions assigned to softkeys are:
NextScr
Toggles between different idle screens. For example, for
GXP1610/GXP1620/GXP1625/GXP1628, pressing most left soft key
(switch screen) will toggle among default idle screen, weather information,
IP address and Account information.
Redial
Redial the last dialed number when there is existed dialed call log.
FwdAll
Unconditionally forwards the phone line (account 1) to another phone.
Missed

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 18 of 35
Shows up unanswered calls to this phone.
SOFTKEYS in Call
Screen
The softkeys are context sensitive and will change depending on the call status
of the phone. Here are the main softkeys in call screen.
Redial
Redials the last dialed number after off hook when there is existed call log.
Dial
Dials the call out after off hook and entering the number.
Answer
Answers the incoming call when the phone is ringing.
Reject
Rejects the incoming call when the phone is ringing.
EndCall
Ends the active call.
Transfer
Transfer softkey will show up after pressing TRAN button and entering
transfer target number. Press Transfer softkey to do blind transfer.
Split
In auto-attended transfer mode, after establishing the second call, press Split
to quit transfer and go back to normal talking status.
ConfCall
Conferences the active calls.
ReConf
Re-establish the conference among the calls on hold.
SPECIAL
SOFTKEYS
(Only for
GXP1610/GXP1620/
GXP1625/GXP1628
when integrated
with UCM61xx)
CallPark
When the phone dials out, the CallPark softkey will display on screen. To park
the call, press it to park the call on available parking lot.
RecOn
During an active call, the RecOn softkey will display on screen. Press it to
trigger UCM call recording.
RecOff
During an active call, after RecOn softkey is pressed and call recording starts,
RecOff softkey will appear on screen. Press it to stop call recording on UCM.
Note: Please refer to UCM61xx User Manuals for the UCM configurations.
Table 7: GXP1610/GXP1620/GXP1625/GXP1628 LCD Icons
Registration Status.

GXP1610/GXP1620/GXP1625/GXP1628 User Guide Page 19 of 35
Solid: Registered
Hollow: Unregistered
Handset Status.
OFF - handset on hook
ON - handset off hook
Speaker Status.
OFF - speaker off
ON - speaker on
Headset Status.
OFF - headset off
ON - headset on
Mute Status.
OFF - The active call is not muted
ON - The active call is muted
Call Forward Status.
OFF - Call Forward feature disabled
ON - Call Forward feature enabled
DND Status.
OFF - Do Not Disturb disabled
ON - Do Not Disturb enabled
SRTP Status.
OFF - SRTP is not used
ON - SRTP is being used
USING THE KEYPAD
Figure 5: GXP16xx Front View (Use GXP162x as example)