Polycom RealPresence RMX 4000, Руководство администратора

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Defining ISDN/PSTN Network Services
Polycom®, Inc. 523
Supported Capabilities and Conferencing Features:
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ISDN video is supported only in Continuous Presence (CP) conferences.
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Only BONDING (using multiple channels as a single, large bandwidth channel) is supported.
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Simple audio negotiation.
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Supported video resolutions are the same as for IP.
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Supported video Protocols are the same as for IP: H.261, H.263, H.264.
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H.239 for content sharing.
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Lecture Mode.
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DTMF codes.
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Securing of conferences.
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Basic cascading between two MCUs using an ISDN link is available and forwarding of DTMF codes
can be suppressed.
Non Supported Capabilities and Conferencing Features:
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NFAS (Non-Facility Associated Signaling)
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Leased line usage
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Restricted Channel mode
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Aggregation of channels
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E1 and T1 spans cannot operate simultaneously
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V.35 serial standards
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Primary and secondary clock source configuration (they are automatically selected by the system)
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Auto detection of Audio Only setting at endpoint
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Auto re-negotiation of bit rate
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Additional network services (two currently supported)
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Change of video mode (capabilities) from remote side during call
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Audio algorithms G.729 and G.723.1
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FECC
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H.243 Chair Control
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T.120 data sharing protocol
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H.261 Annex D
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MIH Cascading using an ISDN connection as cascade link