RFC 3261:SIP: Session Initiation Protocol
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transport protocol


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... tool for creating, modifying, and terminating sessions that works independently of underlying transport protocols and without dependency on the type of session that is being established. ...


... architecture. Typically, these architectures will include protocols such as the Real-time Transport Protocol (RTP) (RFC 1889(-> 3550std64) [28 ...


... retransmissions cease when an ACK request for the response is received. This is independent of whatever transport protocols are used to send the response. Since 2xx is retransmitted end-to-end ...


... transport layer is responsible for managing persistent connections for transport protocols like TCP and SCTP, or TLS ...
... address, port, and transport protocol at the far end of the connection. When a connection ...
... 2914 [43] congestion controlled transport protocol, such as TCP. If this causes a change in the transport protocol ...
... transport protocol, such as TCP. If this causes a change in the transport protocol from the one indicated in the top Via, the value in the top Via MUST be changed. This prevents fragmentation ...
... following process: o If the "sent-protocol" is a reliable transport protocol such as TCP or SCTP ...


... SIP can use any network transport protocol. Parameter names are defined for UDP (RFC 768std6 ...
... multicast packet and MUST only be used if maddr is a multicast address and the transport protocol is UDP. For example, to specify a call to alice@atlanta.com using multicast ...


... A Via header field value contains the transport protocol used to send the message, the client's host name ...
... cookie "z9hG4bK", as discussed in Section 8.1.1.7. Transport protocols defined here are "UDP", "TCP", "TLS ...
... SIPS URI, the protocol still indicates "SIP", and the transport protocol is TLS. ...
... available. 302 Incompatible transport protocol: One or more transport protocols described in the session description are not ...
... 302 Incompatible transport protocol: One or more transport protocols described in the session description are not available. ...


... sent-protocol = protocol-name SLASH protocol-version SLASH transport protocol-name = "SIP" / token ...


... TLS over TCP) can be specified as the desired transport protocol within a Via header field value or a SIP ...
... tunneling mechanism described in Section 23.4 is used. For that reason, it is RECOMMENDED that TCP should be used as a transport protocol when S/MIME tunneling ...
... UDP; TLS requires a connection-oriented underlying transport protocol, which for the purposes of this document means TCP. ...


... Schulzrinne, H., Casner, S., Frederick, R. and V. Jacobson, "RTP: A Transport Protocol for Real-Time Applications", RFC 1889(-> 3550std64), January 1996. ...



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