Cisco IP Communications High-Density Digital Voice/Fax Network Module Guia De Especificaciones
selectable DID or FXS mode is supported on both VICs in Cisco IOS Software Release 12.4(3)
and later.
and later.
DSP Resources
Uses the Packet Voice DSP Module, Generation 2 (PVDM2) series of DSP cards.
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Each PVDM2 DSP card contains from one to four TI C5510 DSPs, dependant upon the particular
product.
product.
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Each TI C5510 DSP can be configured to operate in one of three codec complexity settings:
Flexi Complexity (FC)
❍
Medium Complexity (MC)
❍
High Complexity (HC)
❍
setting is to use FC mode.
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Each TI C5510 DSP can optimally support 16 G.711 voice channels in FC mode. For other codecs
in FC mode, or if the DSPs are configured for MC or HC mode, the number of simultaneous voice
channels that can be supported is shown in
in FC mode, or if the DSPs are configured for MC or HC mode, the number of simultaneous voice
channels that can be supported is shown in
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PVDM2 DSP cards fit into single inline memory module (SIMM) sockets on the NM-HDV2
network modules.
network modules.
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Four PVDM2 SIMM sockets are available on the NM-HDV2 network modules, which allows for a
maximum of 16 onboard C5510 DSPs (four PVDM2-64 cards installed).
maximum of 16 onboard C5510 DSPs (four PVDM2-64 cards installed).
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DSP resources may be oversubscribed, which means that digital voice interfaces may be
configured to support up to as many voice channels as the DSPs can optimally support. Actual
limits on how many simultaneous voice calls can be supported depends on the mixture of codecs
requested of the DSPs.
configured to support up to as many voice channels as the DSPs can optimally support. Actual
limits on how many simultaneous voice calls can be supported depends on the mixture of codecs
requested of the DSPs.
●
DSP resources may be reserved for analog and BRI voice ports to ensure that there are DSP
channels dedicated to these ports during DSP oversubscription scenarios.
channels dedicated to these ports during DSP oversubscription scenarios.
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Signal and General Voice Features
T1/E1 Channel Associated Signaling (CAS) (which includes E1 R2), ISDN PRI Q.931, and Q.SIG
signaling.
signaling.
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VIC2-2FXO and VIC2-4FXO can be configured for Enhanced 911 Centralized Automatic
Message Accounting (CAMA) operation.
Message Accounting (CAMA) operation.
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Analog-to-digital channel bank operation within the NM-HDV2.
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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 (6 of 10) [11/7/2005 2:33:42 PM]