An Analysis of Automatic Call Handling (ACH) Implementation Issues in the Session Initiation Protocol (SIP)

Document Type Expired Internet-Draft (bliss WG)
Author John Elwell 
Last updated 2010-03-08
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This discusses problems associated with automatic call handling (ACH) when using the Session Initiation Protocol (SIP) and specifies some best practices to help achieve interoperability. This work is being discussed on the mailing list.


John Elwell (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)