Title: Extensions to the Session Initiation Protocol (SIP) for the support of the Call Completion Services for the European Telecommunications Standards Institute
Abstract: This document specifies the extensions to the Session Initiation
Protocol (SIP) for the call completion services. Therefore this
document describes a SIP event package that enables subscribing to
call-completion states. Furthermore this document extends the usage of
the Allows-events header field to 180 Ringing and 486 Busy responses.
Publication Year: 2007
Publication Date: 2007-07-03
Language: en
Type: article
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