Cisco Presence

1. The SIP connection between the Cisco IM and Presence Service and Unified CM handles all the phone state presence information exchange. a. Unified CM configuration requires the Cisco IM and Presence Services to be added as application servers on Unified CM and also requires a SIP trunk pointing to the Cisco IM and Presence Service. The address configured on the SIP trunk could be a Domain Name System (DNS) server (SRV) fully qualified domain…