Grandstream GXP1100 User Manual - Manual (Page 20)

FIRMWARE VERSION 1.0.8.4 GXP1100/GXP1105 USER MANUAL Page 18 of 53
phones are under the same LAN/VPN. This simulates a PBX function using the CSMA/CD without a SIP
server. Controlled static IP usage is recommended.
To enable Quick IP Call Mode, go to GXP1100/GXP1105 Web GUI->Settings->Call Features, set "Use
Quick IP Call Mode" to "Yes". Then take the handset off hook and dial #xxx where x is 0-9 and xxx<255.
Press # or SEND and a direct IP call to aaa.bbb.ccc.XXX will be completed. "aaa.bbb.ccc" is from the local
IP address regardless of subnet mask. The number #xx or #x are also valid. The leading 0 is not required
(but it's OK).
For example:

192.168.0.2 calling 192.168.0.3 -- dial #3 followed by # or "SEND";

192.168.0.2 calling 192.168.0.23 -- dial #23 followed by # "SEND";

192.168.0.2 calling 192.168.0.123 -- dial #123 followed by # "SEND";

192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3.
Note:

The # will represent colon ":" in direct IP call rather than SEND key as in normal phone call;

If you have a SIP server configured, direct IP call still works. If you are using STUN, direct IP call will
also use STUN;

Configure the "User Random Port" to "No" when completing direct IP calls.
ANSWERING PHONE CALLS
RECEIVING CALLS

Single incoming call. Phone rings with selected ring tone. Answer call by taking handset off hook;

Multiple incoming calls. When another call comes in while having an active call, the phone will
produce a Call Waiting tone (stutter tone). Answer the incoming call by pressing the FLASH key. The
current active call will be put on hold.
DURING A PHONE CALL
CALL WAITING/CALL HOLD

Hold. Place a call on hold by pressing the HOLD key;

Resume. Press the HOLD key again to resume;