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SIP URI Advertisement Format Service instance name: Instance.Service.Domain Instance = ( SIP-URI / SIPS-URI ) [ SP description ] Service = “_sipuri._udp” / “_sipuri._tcp” / “_sipuri._sctp” E.g.) sip:bob@example.com - PDA._sipuri._udp.local. Contact TXT record attribute Similar to Contact SIP header except: It contains only a single URI Non-SIP URIs are not allowed UA capabilities advertised via field parameters (RFC3840) |