SIP-B: SIP for Business Phones Requirements for Implementing Business Telephony Features on SIP
Endpoints
This informational internet draft describes the requirements for a standard business telephone based on the Session Initiation Protocol (SIP). The objective of this document is to provide a minimum set of requirements for implementing business features on SIP endpoints. This draft is intended to serve as a requirements document for vendors implementing business features on SIP based devices/entities. Details of how each capability or feature is best implemented in SIP, is beyond the scope of this document and may be tracked through the working group draft submissions.