I-D ACTION:draft-ietf-mmusic-sip-session-timer-01.txt
Internet-Drafts@ietf.org Tue, 02 March 1999 01:15 UTC
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Subject: I-D ACTION:draft-ietf-mmusic-sip-session-timer-01.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF. Title : SIP Session Timer Author(s) : S. Donovan Filename : draft-ietf-mmusic-sip-session-timer-01.txt Pages : 12 Date : 26-Feb-99 This document proposes an extension to the SIP specification. This extension adds a new message header that is used to specify the duration of a requested session. The session timer can be used to control the duration of a session if, for instance, one of the participants in the session wants to limit the cost of the session. It can also be used by stateful SIP Proxy Servers to track the status of sessions for which session state exists on the servers. Currently a stateful SIP Proxy Server that is not handling the media stream(s) for the session has no mechanism to definitively determine the state of all sessions for which it has state. While the SIP Specification does provide the BYE method for terminating the session, there is no mechanism for a SIP Proxy Server to detect the end of a session when the BYE message is not sent or is lost due to network problems. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sip-session-timer-01.txt Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-ietf-mmusic-sip-session-timer-01.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-ietf-mmusic-sip-session-timer-01.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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