How do I setup a secure TLS and SRTP SIP trunk between Cisco Unified Communications Manager cluster?
A. Complete these steps to setup a secure TLS and SRTP SIP trunk between Cisco Unified Communications Manager cluster: • Create a new SIP Trunk Security Profile from System > Security Profile > SIP Trunk Security Profile. Make sure you Device Security Mode set to Encrypted and the incoming/outgoing transport type set to TLS. • Apply this security profile to your SIP trunk, and set the destination port to 5061. • Download the Cisco Unified Communications Manager certificates from all servers in the Cisco Unified Communications Manager group configured on the SIP trunks device pool, and upload them to the servers of the other cluster. Record which servers are in ClusterA from SIP Trunk > device pool > Cisco Unified Communications Manager group. There can be up to three. Do the same for ClusterB. The results are something like this. ClusterA ClusterB Server1 Server1 Server2 Server2 Server3 Server3 • Go to the OS Administration page of each server in your list and login. Go to Security > C
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