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Validation, confirmation tests

• register a UA at the proxy of domainA
• register a UA at the proxy of domainB
• make a call from UA 'A' to UA 'B' and see if it succeeds
• check in the UA and proxy logging whether TLS was used (and there was no fallback to UDP)
  

OS specific help

Reminder: this example is based on a compiled version of openSER where the config is in /usr/local/etc/openser and the certificates are in /usr/local/etc/openser/tls/user, which might differ when installed from packages.