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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3515 MCU12 and MCU24 Release 5.1
OL-11897-01
Chapter 1 Cisco Unified Videoconferencing 3515 MCU Functionality
About Cisco Unified Videoconferencing 3515 MCU Architecture
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Unlimited number of conferences.
Note When using a High Definition Video service type, only a single screen is available.
About Cisco Unified Videoconferencing 3515 MCU Architecture
The Cisco Unified Videoconferencing 3515 MCU enables both voice-only and video conference calls
for H.323, SIP, H.320, SCCP and regular PSTN network telephones. H.323 and SIP devices can connect
to a conference directly through the Cisco Unified Videoconferencing 3515 MCU. Other devices such
as voice telephones and video conferencing terminals (H.320) can connect to a conference via a gateway,
such as the Cisco Unified Videoconferencing 3500 Gateway.
Figure 1-1 Supported Devices and Protocols
The Cisco Unified Videoconferencing 3515 MCU supports devices that can send and receive video
streams, as well as those that cannot send but only receive video streams. This means that terminals
without a video camera or video capturing capabilities can participate in a conference as voice-only
participants while benefiting from seeing the other participants.
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IP
IP - H323. MCU, Gateway ISDN - H323.
3G - H324.MSIP