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RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

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ISDN/PSTN Network Services<br />

Chapter 15-Network Services<br />

To enable ISDN and PSTN participants to connect to the MCU, an ISDN/PSTN Network<br />

Service must be defined. A maximum of two ISDN/PSTN Network Services, of the same<br />

Span Type (E1 or T1) can be defined for the <strong>RMX</strong>. Each Network Service can attach spans<br />

from either or both cards.<br />

Most of the parameters of the first ISDN/PSTN Network Service are configured in the Fast<br />

Configuration Wizard, which runs automatically if an RTM ISDN card is detected in the <strong>RMX</strong><br />

during first time power-up. For more information, see the <strong>RMX</strong> 1500/<strong>2000</strong>/4000 Getting<br />

Started <strong>Guide</strong>, "First Entry Power-up and Configuration” on page 2-24.<br />

Supported Capabilities and Conferencing Features:<br />

• ISDN video is supported only in Continuous Presence (CP) conferences.<br />

• Only BONDING (using multiple channels as a single, large bandwidth channel) is<br />

supported.<br />

• Simple audio negotiation.<br />

• Supported video resolutions are the same as for IP.<br />

• Supported video Protocols are the same as for IP: H.261, H.263, H.264.<br />

• H.239 for content sharing.<br />

• Lecture Mode.<br />

• DTMF codes.<br />

• Securing of conferences.<br />

• Basic cascading between two MCUs using an ISDN link is available and forwarding of<br />

DTMF codes can be suppressed.<br />

Non Supported Capabilities and Conferencing Features:<br />

• NFAS (Non-Facility Associated Signaling)<br />

• Leased line usage<br />

• Restricted Channel mode<br />

• Aggregation of channels<br />

• V.35 serial standards<br />

• Primary and secondary clock source configuration (they are automatically selected by<br />

the system)<br />

• Auto detection of Audio Only setting at endpoint<br />

• Auto re-negotiation of bit rate<br />

• Additional network services (two currently supported)<br />

• Change of video mode (capabilities) from remote side during call<br />

• Audio algorithms G.729 and G.723.1<br />

• FECC<br />

• H.243 Chair Control<br />

• T.120 data sharing protocol<br />

• H.261 Annex D<br />

• MIH Cascading using an ISDN connection as cascade link<br />

<strong>Polycom</strong>, Inc. 15-35

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