Grandstream Networks GXP21 Series User Manual page 94

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Call with Call Waiting Enabled (per call)
*71
Off hook the phone;
Dial *71 and then enter the number to dial out.
Unconditional Call Forward.
To set up unconditional call forward:
*72
Off hook the phone;
Dial *72 and then enter the number to forward the call;
Press OK softkey or SEND key.
Cancel Unconditional Call Forward. To cancel the unconditional call forward:
Off hook the phone;
*73
Dial *73;
Hang up the call.
Busy Call Forward. To set up busy call forward:
Off hook the phone;
*90
Dial *90 and then enter the number to forward the call;
Press OK softkey or SEND key.
Cancel Busy Call Forward. To cancel the busy call forward:
Off hook the phone;
*91
Dial *91;
Hang up the call.
Delayed Call Forward. To set up delayed call forward:
Off hook the phone;
*92
Dial *92 and then enter the number to forward the call;
Press OK softkey or SEND key.
Page 94
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