ST2030s VoIP Business Phone
ST2030s SIP Administrator Guide v3.0
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ST20XX SIP New Features (SG vx.61)
Overview
This document describes a set of features included in ST2030 and S2022 SIP
v1.61 and 3.61 respectively in order to improve their usability in different
environments.
Ad-Hoc Conf (RFC 4579)
The ST20xx is now a "conference-aware" user agent which supports SIP
conferencing call control conventions defined in the RFC-4579 (Call Control -
Conferencing for User Agents) as a conference participant.
ST20xx as a conference-aware UA, is able to process SIP redirections such
as described in Section 8.1.3.4 of RFC 3261. Can recognize the 'isfocus'
feature parameter, can support REFER and SIP events. But as many of the
servers which already support this feature as “focus UA” and “Conference
factory” (like Netcentrex/Comverse, Broadsoft or Sylantro servers) don‟t
support so far the subscriptions to conference package (RFC 4575 "Event
Package for Conference State"), this subscribe mechanism is not
implemented in the ST20xx.
MMI description on initiator side:
1. A and B are in a call.
2. A press “Conf” soft key (
-> B is put on hold), then enters C phone
’s number.
3. C replies, A and C are in a 2nd call.
4. A press “Conf” again, to switch in conference mode (
-> C is put on hold).
5. A creates a conference by sending an INVITE to the Conference_Factory_URI (as described in the
section “5.4. INVITE: Cre
ating a Conference Using Ad-
Hoc SIP Methods” of the rfc
-4579).
Then it will :
6. Retrieve the "conference ID" either in the 200 OK or in the 302 Moved response (in case the
phone receives a 302 Moved response, it will send another INVITE to the new URI in order to
really initiate the conference).
7. send REFER to B to move to conference ID (as described in section 5.6 of the rfc-4579)
8. send REFER to C to move to conference ID (as described in section 5.6 of the rfc-4579)
The expected behavior here is the Server takes care of capturing the Refers,
then re-INVITE participants to the new call, and deletes old dialogs with
initiator.
Summary of Contents for ST 2030 SIP
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