I need to enable encryption (SRTP Only) in Gateways using IOS c3900-universalk9-mz.SPA.151-4.M2.bin with uck9.
I enabled only the following command. (Note: I have not identified any other commands for Secure RTP.)
voice service voip ip address trusted list ipv4 0.0.0.0 0.0.0.0 allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 allow-connections sip to sip fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback cisco sip bind control source-interface Loopback0 Average bind source-interface Loopback0 session transport tcp srtp negotiate cisco !
The SIP protocol is used on all Gateways. And I have the following questions:
- I configured correctly?
- What is the most appropriate command to check the SRTP?
- I checked the output of the show call active voice command and the parameter SRTP is equal off.