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SIP User's Manual
10
10. Media Server Capabilities
Media Server Capabilities
This section provides information on the Mediant 1000's media server capabilities:
„
Multi-party conferencing (refer to 'Conference Server' on page 449)
„
Announcements playing and recording (refer to 'Announcement Server' on page 463)
„
IP-to-IP Transcoding (refer to 'IP-to-IP Transcoding' on page 474)
The Mediant 1000 conference, transcoding, announcement and media server applications
can be used separately, each on a different platform, or all on the same gateway. The SIP
URI name in the INVITE message is used to identify the resource (media server,
conference or announcement) to which the SIP session is addressed.
The number of DSP channels that are allocated for IP conferences, transcoding and IP
announcements is determined by the parameter MediaChannels. Other DSP channels can
be used for PSTN media server.
The Mediant 1000 SIP implementation is based on the decomposition model described in
the following IETF drafts:
„
‘A Multi-party Application Framework for SIP’ (draft-ietf-sipping-cc-framework-06.txt)
„
‘Models for Multi Party Conferencing in SIP’ (draft-ietf-sipping-conferencingframework-05.txt)
„
‘A Framework for Conferencing with the Session Initiation Protocol (SIP)’ (RFC 4353)
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‘Basic Network Media Services with SIP’ (RFC 4240)
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‘Media Server Control Markup Language (MSCML) and Protocol’ (draft-vandykemscml-06.txt)
Note: To use the Mediant 1000's advanced Announcement capabilities, it's
essential that the ini file parameter AMSProfile be set to 1.
10.1
Conference Server
The Mediant 1000 supports dial-in, multi-party conferencing. In conference applications,
the Mediant 1000 functions as a centralized conference bridge. In ad-hoc or prearranged
conferences, users ‘invite’ the conference bridge. The conference bridge mixes the media
and sends it to all participants.
The Mediant 1000 supports the following interfaces for conferencing:
„
Simple (according to NetAnn) -- refer to 'Simple Conferencing (NetAnn)' on page 450
„
Advanced (according to MSCML) -- refer to 'Advanced Conferencing (MSCML)' on
page 452
Note: The conference application is a special order option.
Version 5.2
449
September 2007