1 Introduction


The Client Error Reporting Protocol describes proprietary extensions to the Session Initiation Protocol (SIP) for protocol client error reporting. The Session Initiation Protocol (SIP) is used by terminals to establish, modify, and terminate multimedia sessions or calls.

Sections 1.5, 1.8, 1.9, 2, and 3 of this specification are normative. All other sections and examples in this specification are informative.