Hi John,
It's possible that the IP phone model you are using for testing
does not support the Call Reject option;
Restrictions
Some restrictions apply to DND usage, depending on the phone or device type in use.
•
The following phone models and devices that are running either SCCP or SIP support both DND options:
–Cisco Unified IP Phone 7906G
–Cisco Unified IP Phone 7911G
–Cisco Unified IP Phone Expansion Module 7914
–Cisco Unified IP Phone 7931G
–Cisco Unified IP Phone 7941G/7941G-GE
–Cisco Unified IP Phone 7942G
–Cisco Unified IP Phone 7945G
–Cisco Unified IP Phone 7961G/7961G-GE
–Cisco Unified IP Phone 7962G
–Cisco Unified IP Phone 7965G
–Cisco Unified IP Phone 7970G
–Cisco Unified IP Phone 7971G/7971G-GE
–Cisco Unified IP Phone 7975G
•The following phone models and devices that are running SCCP support only the DND Ringer Off option:
–Cisco Unified IP Phone 7940
–Cisco Unified IP Phone 7960
–Cisco IP Communicator
Note Cisco Unified IP Phones 7940 and 7960 that run SIP use their own implementation of Do Not Disturb, which is backward compatible.
•The following phone models and devices support only the DND Call Reject option:
–Mobile devices (dual mode)
–Remote Destination Profile
–Cisco Unified Mobile Communicator
Cheers!
Rob
