@techreport{dcsgroup-mmusic-proxy-proxy-00, number = {draft-dcsgroup-mmusic-proxy-proxy-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-dcsgroup-mmusic-proxy-proxy/00/}, author = {Dr. K. K. Ramakrishnan and Eric Miller}, title = {{SIP proxy-to-proxy extensions for supporting Distributed Call State}}, pagetotal = 8, year = 1999, month = jun, day = 29, abstract = {In order to deploy a residential telephone service at very large scale across different domains, it is necessary for trusted elements owned by different service providers to exchange trusted information that conveys customer-specific information and expectations about the parties involved in the call. This document describes extensions to the Session Initiation Protocol (RFC2543) for supporting the exchange of customer information and billing information between trusted entities in the architecture described in \textless{}draft-dcsgroup- mmusic-arch-00.txt\textgreater{}.}, }