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Grandstream Networks, Inc. GXP21xx User Manual Page 21 of 48
Firmware version: 1.0.1.110 Last Updated: 01/2012
CALL FEATURES
The GXP21xx supports traditional and advanced telephony features including caller ID, caller ID w/name,
call forward/transfer/park/hold as well as intercom/paging and BLF.
Table 11: GXP21xx Call Features
Key Call Features
*30
Block Caller ID (for all subsequent calls)
Offhook and dial “*30”.
*31
Send Caller ID (for all subsequent calls)
Offhook and dial “*31”.
*67
Block Caller ID (per call)
Offhook, dial “*67” and then enter the number to dial out.
*82
Send Caller ID (per call)
Offhook, dial “*82” and then enter the number to dial out.
*70
Disable Call Waiting (per Call)
Offhook, dial “*70” and then enter the number to dial out.
*71
Enable Call Waiting (per Call)
Offhook, dial “*71” and then enter the number to dial out.
*72 Unconditional Call Forward
Offhook, dial “*72”. Then enter the number to forward the call. Press OK softkey or
SEND button.
*73 Cancel Unconditional Call Forward
Offhook, dial “*73” and the phone will hang up.
*90 Busy Call Forward
Offhook, dial “*90”. Then enter the number to forward the call. Press OK softkey or
SEND button.
*91 Cancel Busy Call Forward
Offhook, dial “*91” and the phone will hang up.
*92 Delayed Call Forward
Offhook, dial “*92”. Then enter the number to forward the call. Press OK softkey or
SEND button.
*93 Cancel Delayed Call Forward
Offhook, dial “*93” and the phone will hang up.
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