User's Manual

Grandstream Networks, Inc. GXP1100/1105 User Manual Page 8 of 28

Firmware version: 1.1 Last Updated: 06/2011

or press the SPEAKER button

• Press the REDIAL soft-key

NOTE: Dial-tone and dialed number display occurs after the handset is off-hook, or handset button is

pressed, or speaker button is pressed. After dialing the number, the phone waits 4 seconds (by default; No

key Entry Timeout) before sending and initiating the call. Press “#” button to override the 4 second delay.

Making Calls using IP Addresses

Direct IP Call allows two phones to talk to each other in an ad-hoc fashion without a SIP proxy. VoIP calls

can be made between two phones if:

• Both phones have public IP addresses, or

• Both phones are on a same LAN/VPN using private or public IP addresses, or

• Both phones can be connected through a router using public or private IP addresses (with necessary

port forwarding or DMZ)

For example: If the target IP address is 192.168.1.60 and the port is 5062 (e.g. 192.168.1.60:5062), input

the following: 192*168*1*60#5062. The “*” key represents the dot “.”; the “#” key represents colon “:”. Press

OK to dial out.

The GXP1100/1105 also supports Quick IP Call mode. This enables the phone to make direct IP-calls, using

only the last few digits (last octet) of the target phone’s IP-number. This is possible only if both phones are in

under the same LAN/VPN. This simulates a PBX function using the CMSA/CD without a SIP server.

Controlled static IP usage is recommended.

To enable Quick IP calls, the phone has to be setup first. This is done through the web-setup function. In the

“Advanced Settings” page, set the "Use Quick IP-call mode” to “Yes”. When #xxx is dialed, where x is 0-9

and xxx <=255, a direct IP call to aaa.bbb.ccc.XXX is completed. “aaa.bbb.ccc” is from the local IP address

regardless of subnet mask. The numbers #xx or #x are also valid. The leading 0 is not required (but OK).

For example:

192.168.0.2 calling 192.168.0.3 -- dial #3 followed by #

192.168.0.2 calling 192.168.0.23 -- dial #23 followed by #

192.168.0.2 calling 192.168.0.123 -- dial #123 followed by #

192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3

NOTE: If you have a SIP Server configured, a Direct IP-IP still works. If you are using STUN, the Direct IP-

IP call will also use STUN. Configure the “Use Random Port” to “No” when completing Direct IP calls.

NSWERING PHONE CALLS

Receiving Calls

1. Incoming single call: Phone rings with selected ring-tone. The corresponding LINE flashes red.

Answer call by taking Handset off hook or pressing SPEAKER or HEADSET or by pressing the

corresponding account LINE button.

2. Incoming multiple 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 FLASH button. The

current active call will be put on hold.