A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : MPLS IP Bridging Configuration Guidance for IEPREP
Author(s) : P. McGregor et al.
Filename : draft-mcgregor-ieprep-bridging-bcp-00.txt
Pages : 14
Date : 2003-6-26
An Internet Emergency Preparedness (IEPREP) telephony service IP
Bridging topology using Multi-Protocol Label Switching (MPLS) should
provide Emergency Telecommunications Service (ETS) using a) Session
Initiation Protocol (SIP) Priority header value of 'emergency', b)
Session Description Protocol (SDP) attribute experimental parameters to
designate the call (session) as either a National Emergency call,
International Emergency call, or both, c) MEGACO context descriptors of
priorities 1-6 and emergency indication, and d) MPLS E-LSPs with a
dedicated codepoint specifying application of ETS Per-Hop Behavior
(PHB). IP Differentiated Services marking should use specified code
points allocated from the Experimental and Local Use pool (pool 2) to
designate the traffic as either National Emergency or International
Emergency for corresponding PHB use. Signaling between the Signaling
Gateway (SG) and Media Gateway Controller (MGC) should apply the MTP3
SS7 protocol over the M2UA adaptation protocol for use of the Stream
Control Transmission Protocol (SCTP). Support is suggested for work in
progress on defining a SIP Resource Priority header and defining a SIP
telephone url extension for calling party category designation.
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