What is RFC 3261 SIP?

What is RFC 3261 SIP?

RFC 3261 SIP: Session Initiation Protocol June 2002 Via contains the address (pc33.atlanta.com) at which Alice is expecting to receive responses to this request. It also contains a branch parameter that identifies this transaction.

How reliable are proposalprovisional responses in RFC 3261?

Provisional responses provide information on the progress of the request processing, but are not sent reliably in RFC 3261 . It was later observed that reliability was important in several cases, including interoperability scenarios with the PSTN.

What is RFC 3960 early media and ringing tone generation?

RFC 3960 Early Media and Ringing Tone Generation December 2004 If the UAC receives early media from different UASs, it needs to present it to the user. If the early media consists of audio, playing several audio streams to the user at the same time may be confusing.