On UC500, I have a SIP trunk to the PSTN. In the SIP trunk configuration, it asked me to specify the main number for outbound CLID, and I can see that "Register Caller ID Main Number" is checked.
I want the following flexibility, how do I achieve it in CCA? Is my only choice CLI?
1. I want outgoing calls to 911 to have the same main CLID
2. I want outgoing calls to all other number to have DID CLID
I'm aware of the Telephony > Dial Plan > Outgoing > Caller ID page, but I don't see ability to set the callerid based on the destination number.