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Grandstream Networks, Inc. HT-502 User Manual Page 13 of 35
Firmware 1.0.0.39 Last Updated: 03/2007
Call Features
The HT–502 supports all the traditional and advanced telephony features.
T
ABLE 6: HT–502 CALL FEATURE DEFINITIONS
Key Call Features
*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.
*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.