RFC 3486:Compressing the Session Initiation Protoc...
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SCTP


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... SIP (e.g., UDP, TCP or SCTP). A SIP server that supports, for instance, three different transport protocols ...
... A server that, for example, supported TCP and SCTP as transports, TLS ...
... SigComp 5. SCTP, no security, no compression ...
... compression 6. SCTP, no security, SigComp ...
... SigComp 7. SCTP, TLS, no compression ...
... compression 8. SCTP, TLS, SigComp ...



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