IP Phone User Manual
Grandstream Networks, Inc.  GXP1400/1405 User Manual   Page 11 of 36 
   Firmware version: 1.0.1.83  Last Updated: 08/2011 
•  Dial the number to Page/Intercom 
•  Press “SEND” button to dial out 
NOTE:  
•  Dial-tone and dialed number display occurs after the handset is off-hook, or handset button is 
pressed, or speaker button is pressed, or  the line key is selected.  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) 
To make a direct IP call, please follow these steps: 
•  Press MENU button to bring up MAIN MENU 
•  Select “Direct IP Call” using the arrow-keys 
•  Press OK to select 
•  Input the 12-digit target IP address. (Please see example below) 
•  Press OK key to initiate call.  
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  GXP1400/1405  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. 










