> Can someone direct me to a document that clearly outlines the > differences between a SIP Proxy and a B2BUA. While RFC 3261 outlines a > proxy, the B2BUA is still a bit vague. How and why would I use a B2BUA?
Some quick answers: 1. The behaviour of a proxy is clearly defined in RFC 3261. There is only limited freedom on adding, modifying and deleting headers of a message. E.g. a proxy must not change the message body 2. If you need more freedom and e.g. touch the message body than you have to terminate and re-originate. That's what a B2BUA does. 3. A B2BUA is typically used for media transcoding, shielding a network (security perimeter), actively impact a session (terminate for pre-paid and lack of credit)... Franz _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
