User's Manual

Grandstream Networks, Inc. GXP21xx User Manual Page 19 of 44
Firmware version: 1.0.1.83 Last Updated: 08/2011
 If after pressing the “CONF” button, a user decides not to conference anyone, press CONF
again or the original LINE button
 This will resume two-way conversation
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.
GXP21xx 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 “#”.
Voice Messages (Message Waiting Indicator)