Architecture
Integrating Cisco Unified CM (UCM)
Role of UCMCentralized routing hub - all PSTN and Webex Calling calls route through UCM
Port splitTwo SIP trunk ports used to distinguish call direction from UCM
UCM configSet incoming port to 5065 in the Webex Calling SIP Trunk Security Profile in UCM
Port assignment
:5065
UCM to Webex Calling - pattern :5065
:5060
UCM to PSTN - pattern 192\.168\.80\.6[0-5]:5060
Local DNS SRV records (IOS XE)
A records for UCM nodes
ip host ucmpub.mydomain.com 192.168.80.60
SRV record format: priority weight port host
ip host _sip._udp.wxtocucm.io srv 0 1 5065 ucmpub.mydomain.com
ip host _sip._udp.pstntocucm.io srv 0 1 5060 ucmpub.mydomain.com
Routing summary
Webex inbound (DP100) routes to DPG300 (UCM-Webex trunk). PSTN inbound (DP200) routes to DPG400 (UCM-PSTN trunk). UCM-Webex (DP300) routes to DPG100. UCM-PSTN (DP400) routes to DPG200.