User's Manual
Grandstream Networks, Inc.  HT-702 User Manual  Page 14 of 32 
  Firmware Version 1.0.0.17  Last Updated: 02/2012 
CALL FEATURES 
The HT702 supports all the traditional and advanced telephony features. 
Table 7: HT702 Call Features 
Key  Call Features 
*02  Forcing a Codec (per call) *027110 (PCMU), *027111 (PCMA), *02723 (G723), *02729 (G729), 
*0272616 (G726-r16), *0272624 (G724-r24), *0272632 (G726-r32), *0272640 (G726-r40), 
*027201 (iLBC) 
*03  Disable LEC (pe call) Dial “*03” + ” number ”. No dial tone is played in the middle. 
*16  Enable SRTP 
*17  Disable SRTP 
*30  Block Caller ID (for all subsequent calls) 
*31  Send Caller ID (for all subsequent calls) 
*47  Direct IP Calling. Dial “*47” + “IP address”. No dial tone is played in the middle. Detail see Direct 
IP Calling section on page 12. 
*50  Disable Call Waiting (for all subsequent calls) 
*51  Enable Call Waiting (for all subsequent calls) 
*67  Block Caller ID (per call). Dial “*67” + ” number ”. No dial tone is played in the middle. 
*82  Send Caller ID (per call). Dial “*82” + ” number ”. No dial tone is played in the middle. 
*69  Call Return Service: Dial *69 and the phone will dial the last incoming phone number received. 
*70  Disable Call Waiting (per call). Dial “*70” + ” number ”. No dial tone is played in the middle. 
*71  Enable Call Waiting (per call). Dial “*71” + ” number ”. No dial tone is played in the middle. 
*72  Unconditional Call Forward:  Dial “*72” and then the forwarding number followed by “#”.  Wait for 
dial tone and hang up. (dial tone indicates successful forward) 
*73  Cancel Unconditional Call Forward. To cancel “Unconditional Call Forward”, dial “*73”, wait for 
dial tone, then hang up. 
*74  Enable Paging Call: Dial “*74” and then the destination phone number you want to page. 
*78  Enable Do Not Disturb (DND): When enabled all incoming calls are rejected. 
*79  Disable Do Not Disturb (DND): When disabled, incoming calls are accepted. 
*87  Blind Transfer 
*90  Busy Call Forward:  Dial “*90” and then the forwarding number followed by “#”. Wait for dial tone 
then hang up. 
*91  Cancel Busy Call Forward. To cancel “Busy Call Forward”, dial “*91”, wait for dial tone, then 
hang up. 
*92  Delayed Call Forward. Dial “*92” and then the forwarding number followed by “#”. Wait for dial 
tone then hang up. 
*93  Cancel Delayed Call Forward. To cancel Delayed Call Forward, dial “*93”, wait for dial tone, 
then hang up. 
Flash/Hook 
Toggles between active call and incoming call (call waiting tone). If not in conversation, flash/hook 
will switch to a new channel for a new call. 
# 
Pressing pound sign will serve as Re-Dial key. 










