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GXP21XX User Guide 
Version 1.0.9.108 
 
Figure 37: Hide Profile Picture 
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 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. 
  Ring Group Call. If the phone is member of a Ring Group, when the SIP server receives a call to the 
Ring Group, all phone will start ringing, once a phone answers the call, a missed call notification will 
pop up on all phones. The GXP21XX Series support reason header, which allows the phones not to 
log a missed call if it is answered elsewhere. The following message will be included in the CANCEL 
SIP message received by the phone for notifying it that another user answers the call. 
Reason: SIP; cause=200;text="Call completed elsewhere" 
Call Screen Improvement 
If a text contains more than one line, it will slide from right to left to display the full information without being 
cut, as shown on the figure below. 
 
Figure 38: Text sliding 
Group Listening 
Group Listening will give the users the ability to enable speaker sound while the handset/headset still in 
use. This option can be enabled from the Web GUI under Settings  Preferences  Audio Control. 
Users can press SpkOn softkey to activate the speaker sound or press SpkOff softkey to disactivate it.