Why is TLS the chosen link encryption for SIP?
From a paper, it seems that TLS can't handle UDP, whereas SIP doesn't require anyone to use TCP alone! So how is the interoperability ensured by TLS!
What would have been the issues if IPSec would have been used instead?
Answer
From a paper, it seems that TLS can't handle UDP, whereas SIP doesn't require anyone to use TCP alone! So how is the interoperability ensured by TLS!
That used to be true. DTLS provides TLS for datagram based protocols like UDP