So what exactly is a “SIP trunk”, anyway? (One definition is proposed…)
Wednesday, February 20th, 2008
One of the ironies of the language we use in this space is that we all have been talking about “SIP trunks” for a few years now, but nowhere has there actually been a formal definition of what exactly a SIP trunk really is!
Leaping into the fray now is Jonathan Rosenberg, author of a zillion Internet-Drafts and multiple RFCs, with his new I-D titled, appropriately “What is a Session Initiation Protocol (SIP) Trunk Anyway?” Here is the abstract:
The term “Session Initiation Protocol (SIP) Trunk” has become almost commonplace amongst vendors and SIP providers. Even though the notion of a ‘trunk’ has a well defined meaning in circuit switched systems, it has never been defined for SIP. This document provides a formal definition for a SIP trunk, discusses its scope and applications, and establishes best practices for identification and security of SIP trunks.
The document makes for good reading even if you are not overly familiar with the concepts behind SIP trunks. Jonathan is looking for feedback and there will I’m sure be continued discussion on this topic.
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sip, sip trunks, ietf, jonathan rosenberg
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