A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Interworking between SIP and QSIG for call diversion
Author(s) : J. Elwell et al.
Filename : draft-elwell-sipping-qsig2sip-diversion-00.txt
Pages : 35
Date : 2003-6-20
This document specifies call diversion interworking between the
Session Initiation Protocol (SIP) and QSIG within corporate
telecommunication networks (also known as enterprise networks). SIP
is an Internet application-layer control (signalling) protocol for
creating, modifying, and terminating sessions with one or more
participants. These sessions include, in particular, telephone calls.
QSIG is a signalling protocol for creating, modifying and terminating
circuit-switched calls, in particular telephone calls, within Private
Integrated Services Networks (PISNs). QSIG is specified in a number
of ECMA Standards and published also as ISO/IEC standards.
As the support of telephony within corporate networks evolves from
circuit-switched technology to Internet technology, the two
technologies will co-exist in many networks for a period, perhaps
several years. Therefore there is a need to be able to establish,
modify and terminate sessions involving a participant in the SIP
network and a participant in the QSIG network, taking into account
the impact of diversion during call establishment. Such calls are
supported by gateways that perform interworking between SIP and QSIG.
This document is a product of the authors' activities in ECMA
(www.ecma.ch) on interoperability of QSIG with IP networks.
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