Polycom MGC+100 Release Note page 6

MGC Release Notes - Version 7.5
Table 1: New Features List (Continued)
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Category Feature Name
IP SIP REINVITE
IP SIP OPTIONS
IP SIP REFER
IP SIP Factory
IP Microsoft LCS support
Description
SIP protocol allows ways of changing
one or more parameters in an existing
session. It is performed by sending a
REINVITE request with the desirable
mode to the other SIP entities in the
conference.
Version 7.5 supports the SIP REINVITE
request sent by the remote SIP endpoint
to the MGC in the following instances:
• Party Media - change in the
participant's IP address.
•
Conference Media - change in the
participant status that is informed to
the conference, such as mute and
hold.
•
Change Mode - changes that affect
the conference media and may affect
other participants as a result, such as
change in the video protocol.
• Later Video - Upgrade the SIP
connection from audio only to video.
Support for SIP RFC-3261 (OPTIONS)
that allows a UA (User Agent) to query
another UA or a proxy server for its SIP
and media capabilities.
Support for SIP RFC-3265 (REFER) that
instructs the recipient of the REFER
request to contact a third party using the
contact information included with the
REFER request. This allows any SIP UA
to send the URI of another UA to the
conference and instructs the conference
to create a new dial-out participant and
dial to it.
Allows SIP endpoints to create ad hoc
conference and automatically connect to
the conference.
This version supports multipoint SIP
conferencing in a Microsoft environment:
• Microsoft LCS 2005, SP1,
•
Office Communicator version 1.0,
•
Windows Messenger version 5.1,
• Installed desktop and group video
conferencing systems PVX versions
8.0 & 8.0.1; VSX 8.0 & 8.0.3.
•
MGC Manager 7.5
Note: This product requires purchase of
a license.