Grandstream Networks GXP2120 User Manual User Manual page 36

Send Caller ID (for all subsequent calls)
*31
Block Caller ID (per call)
*67
Send Caller ID (per call)
*82
Disable Call Waiting (per Call)
*70
Enable Call Waiting (per Call)
*71
Unconditional Call Forward. To set up unconditional call forward:
*72
Cancel Unconditional Call Forward. To cancel the unconditional call forward:
*73
Busy Call Forward. To set up busy call forward:
*90
Cancel Busy Call Forward. To cancel the busy call forward:
*91
FIRMWARE VERSION 1.0.5.24

Off hook the phone;

Dial *31.

Off hook the phone;

Dial *67 and then enter the number to dial out.

Off hook the phone;

Dial *82 and then enter the number to dial out.

Off hook the phone;

Dial *70 and then enter the number to dial out.

Off hook the phone;

Dial *71 and then enter the number to dial out.

Off hook the phone;

Dial *72 and then enter the number to forward the call;

Press OK softkey or SEND key.

Off hook the phone;

Dial *73;

Hang up the call.

Off hook the phone;

Dial *90 and then enter the number to forward the call;

Press OK softkey or SEND key.

Off hook the phone;

Dial *91;
GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 36 of 77