To find out the ports used for SIP TCP and TLS fro a given domain your device
must perform the following DNS lookups:
dig NAPTR naptr sip2sip.info
sip2sip.info. 3599IN NAPTR 15 100 "s" "SIPS+D2T" ""
_sips._tcp.sip2sip.info.
dig SRV _sips._tcp.sip2sip.info.
Hello,
I need a little help.
I've been unable to connect to sip2sip.info via TLS with my Cisco
SPA504G device for a couple of days now.
sip2sip.info status says: all systems operational
yet I can't establish a secure connection.
If I choose TCP transport protocol then it can connect otherwise
