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FIRMWARE VERSION 1.0.5.24 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 36 of 77

*31

Send Caller ID (for all subsequent calls)

 Off hook the phone;

 Dial *31.

*67

Block Caller ID (per call)

 Off hook the phone;

 Dial *67 and then enter the number to dial out.

*82

Send Caller ID (per call)

 Off hook the phone;

 Dial *82 and then enter the number to dial out.

*70

Disable Call Waiting (per Call)

 Off hook the phone;

 Dial *70 and then enter the number to dial out.

*71

Enable Call Waiting (per Call)

 Off hook the phone;

 Dial *71 and then enter the number to dial out.

*72

Unconditional Call Forward. To set up unconditional call forward:

 Off hook the phone;

 Dial *72 and then enter the number to forward the call;

 Press OK softkey or SEND key.

*73

Cancel Unconditional Call Forward. To cancel the unconditional call forward:

 Off hook the phone;

 Dial *73;

 Hang up the call.

*90

Busy Call Forward. To set up busy call forward:

 Off hook the phone;

 Dial *90 and then enter the number to forward the call;

 Press OK softkey or SEND key.

*91

Cancel Busy Call Forward. To cancel the busy call forward:

 Off hook the phone;

 Dial *91;

Grandstream Networks GXP2120 User Manual User Manual

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