SIP PSTN Interworking Umbrella 'Require:' Header

Document Type Expired Internet-Draft (individual)
Author Adam Roach 
Last updated 1999-06-24
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document outlines a new value for the SIP 'Require:'header which denotes compliance with a number of mechanisms necessary to interwork smoothly with existing telephony networks.


Adam Roach (

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