A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Requesting Answering and Alerting Modes for the Session Initiation Protocol (SIP)
Author(s) : D. Willis, A. Allen
Filename : draft-willis-sip-answeralert-00.txt
Pages : 23
Date : 2005-6-15
This document defines two SIP extension header fields and associated
option tags that can be used in INVITE requests to convey the
requester's preference for user-interface handling of that request.
The first header, ^Answer-Mode^, expresses a preference as to whether
the target node's user interface waits for user input before
accepting the request or instead accepts the request without waiting
on user input. The second header, ^Alert-Mode^, expresses a
preference as to whether the target node's user interface alerts the
user about the request. These behaviors have applicability to
applications such as Push-to-Talk and to diagnostics like loop-back.
This document also defines use of the SIP extension header field
^Answer-Mode^, in a response to an INVITE request to inform the
requester as to which answer mode was actually applied to this
request. There are significant security considerations, especially
when the two request options are used together.
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