Cisco IP Communications High-Density Digital Voice/Fax Network Module Guia De Especificaciones

DSP sharing between multiple NM-HDV2 modules on the same voice router.

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Use of DSPs as a transcoding or conferencing resource. This feature requires Cisco IOS Software
Release 12.3(8)T or later. For more information, refer to 

.

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Drop-and-Insert (D&I) of timeslots from one T1/E1 voice interface to another.

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Supported with H.323, Media Gateway Control Protocol (MGCP), and Session Initiation Protocol
(SIP).

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VoIP, VoFR, and VoATM (AAL2 and AAL5) support.

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Cisco CallManager support in release 3.3(4) or later, or 4.0(1)SR1 or later.

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Connection Trunk and Transparent Common Channel Signaling (T-CCS) (frame-forwarding and
clear-channel).

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Hoot & Holler multicast voice traffic.

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Fax and Modem PassThrough, Fax Relay. At this time Modem Relay is not supported.

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G.168-compliant Echo Cancellation.

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DSP-less (hairpin) POTS-to-POTS calls within the same NM-HDV2. This can enable BRI-to-PRI
video Time Division Multiplexing (TDM) switching.

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Channel-groups can be defined on any T1/E1 controller to generate serial interfaces for HDLC,
Frame-Relay, and PPP connectivity.

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Thirty-two High-Level Data Link Control (HDLC) controllers available to support data
connectivity through channel-group configuration (a PRI group also counts as one data
connection).

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Maximum aggregate throughput of all channel-groups defined on the NM is 2 Mbps.

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Ability to participate in chassis Time Division Multiplexing (TDM) backplane clocking, if
applicable.

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Dual independent clock domains for onboard T1/E1 controllers, provided at least one controller is
used only for data connectivity.

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Online Insertion and Removal (OIR) is supported, but only on the Cisco 3745 and 3845 platforms.

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This table outlines specific software requirements for features not supported in the first Cisco IOS
Software release for the NM-HDV2 product.

Cisco - Understand the NM-HDV2 IP Communications High-Density Digital Voice or Fax Network Module 

http://kbase:8000/paws/servlet/ViewFile/63529/nmhdv2.xml?convertPaths=1 (7 of 10) [11/7/2005 2:33:42 PM]