User's Manual
Table Of Contents
- DOCUMENT PURPOSE
- GNU GPL INFORMATION
- WELCOME
- PRODUCT OVERVIEW
- INSTALLATION
- GETTING TO KNOW GXP1610/GXP1620/GXP1625
- CONNECTING TO DEVICES
- RESTORE FACTORY DEFAULT SETTINGS
- EXPERIENCING THE GXP1610/GXP1620/GXP1625
Firmware Version 1.0.0.11 
GXP1610/GXP1620/GXP1625 User 
Guide 
Page 22 of 31 
ANSWERING PHONE CALLS 
RECEIVING CALLS 
  Single incoming call. Phone rings with selected ring tone. The corresponding LINE key will flash in 
red. Answer call by taking handset off hook, or using Speaker/Headset, or pressing the flashing LINE 
key; 
  Multiple  incoming  calls.  When another  call  comes  in  while  having  an  active  call,  the  phone  will 
produce a Call Waiting tone (stutter tone). The other LINE key will flash in red. Answer the incoming 
call by pressing the flashing LINE key. The current active call will be put on hold automatically. 
DO NOT DISTURB 
Do Not Disturb can be enabled/disabled from phone's LCD by following the steps below: 
  Press the Menu button and select "Preference" using navigation keys; 
  Press Menu button again to get into Preference options; 
  When "Do Not Disturb" is highlighted, press Left/Right key to disable/enable DND; 
  Press “Save” soft key to save the change.  
When Do Not Disturb feature is turned on, the DND icon   will appear on the right side of the LCD. The 
incoming call will not be accepted or the call will directly go into voicemail. 
DURING A PHONE CALL 
CALL RECORDING 
During an active call, users could record the conversation to the UCM 62XX Series server and download 
the record to PC and listen to it with the help of the server administrator. 
In  the  process  of  establishing  the  call,  when  get  through,  press  the  RECORD  key   to  start 
recording. 
Press   again to stop recording. 
Note: 
Recording  feature  is  only  available  when  using  the  Grandstream  UCM  series  IP  PBX  appliance.  The 
record file will be saved automatically to UCM. Please contact the UCM server administrator to login UCM 
to download the file. 










