The Core Session Initiation Protocol User Agent Protocol Data Set

This document defines the properties and format for the core SIP user agent protocol dataset. The properties defined in this document are expected to be common to most SIP user agents regardless of whether the user agent support audio, video, text or any combination of media. These core SIP properties are considered to be a dataset. Several datasets may be combined into documents or profiles that are provided to SIP user agents so that they can operate with the desired behavior.