User's Manual
Grandstream Networks, Inc.  GXV3140 USER MANUAL   
 FIRMWARE VERSION 1.0.1.18 Updated : 09/2009 
CALL FEATURES 
These are the feature codes for call features. To use the code, select the line you wish to use by pressing 
the LINE button and enter these feature codes. 
Table 7: Call Features 
Code  Feature 
*30  Block Caller ID (for all subsequent calls) 
*31  Send Caller ID (for all subsequent calls) 
*50  Disable Call waiting (for all subsequent calls) 
*51  Enable Call Waiting (for all subsequent calls) 
*67  Block Caller ID (per call): Dial *67 + Phone/Ext. Number (no dial-tone in between). 
*82  Send Caller ID (per call): Dial *82 + Phone/Ext. Number (no dial-tone in between). 
*70  Disable Call Waiting (per call): Dial *70 + Phone/Ext. Number (no dial-tone in between). 
*71  Enable Call Waiting (per call): Dial *71 + Phone/Ext. Number (no dial-tone in between). 
*72  Unconditional Call Forward: Dial *72 + Phone/Ext. Number followed by the # key. Wait for a 
dial-tone and then hang up (dial-tone means input is successful). 
*73  Cancel Unconditional Call Forward: Dial *73 and wait for a dial-tone before hanging up. 
*90  Busy Call Forward: Dial *90 + Phone/Ext. Number followed by the # key. Wait for a dial- tone 
and then hang up. 
*91  Cancel Busy Call Forward: dial *91 and wait for a dial-tone before hanging up. 
*92  Delayed Call Forward: Dial *92 + Phone/Ext. Number followed by the # key. Wait for a dial-tone 
and then hang up. 
*93  Cancel Delayed Call Forward: Dial *93 and wait for a dial-tone before hanging up. 










