With latest V13.1, MSS can support “SIP over TLS” now. In some enterprise communication systems, they often requre that SIP/Call signals or messages must be crypted to protect users information. Now it is very easy to do that with this new version.
Please refer to our online document for more details about this feature:
http://www.myvoipapp.com/docs/mss_services/sip-over-tls/index.html