Grandstream Networks GVC3210 User Manual page 88

Paging Call.
*74

Dial *74 followed by the phone number to send the paging call.
Force Audio Calling (per call).
*83

Dial *83 followed by the phone number to send the audio call.
Force Video Calling (per call).
*84

Dial *84 followed by the phone number to send the video call.
Busy Call Forward. To set up busy call forward:
*90

Dial *90 followed by the phone number to forward the call.
Cancel Busy Call Forward. To cancel the "busy call forward":
*91

Dial *91.
Enable Call Forward No Answer. To set up Call Forward No Answer:

*92 Dial *92 followed by the number to forward the call. The default timeout before the call
is forwarded is 20 seconds.
Cancel Call Forward No Answer. To cancel Call Forward No Answer:
*93

Dial *93.
GVC3210 User Guide
Version 1.0.1.18
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