Name: 32-Channel High-Density Voice DSP Module
Brand: Cisco
Price: 155.95 USD
Availability: InStock

Cisco PVDM4-32 32-Channel High-Density Voice DSP Module

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$155.95

Ships next business day.

In Stock: 267
Manufacturer: Cisco
Model or Part: PVDM4-32
Condition: Refurbished
Weight: 2.00lb

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New - Sealed or Open Box Condition
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Description

PVDMs support digital voice connections, conferencing, universal transcoding, and media optimization services:

T1/E1 voice: One of the primary uses of PVDMs is to packetize digital voice into IP packets to enable time-division multiplexing (TDM) digital voice applications.

Conferencing: PVDM modules support ad hoc and meet-me conferencing with various codecs in conjunction with Cisco Unified Communications Manager and Cisco Unified Communications Manager Express.

Universal transcoding: In conjunction with Cisco IOSÂ® Software, the PVDMs support universal transcoding, which allows conversion from any supported codec to any other supported codec.

Transrating: The PVDMs support transrating, in which the same codec is repacketized in order to connect dissimilar networks that have different codec packetization periods.

Voice-quality management: The PVDMs perform compression, voice-activity detection, jitter management, and echo cancellation. The echo cancellation offered in the PVDMs has a tail length of 128 milliseconds and complies with ITU-T G.168.

Energy savings: The motherboard PVDMs (PVDM4s) offer multiple power-saving modes, including a power-saver mode when the module is not in use. In power-saver mode, each PVDM4 can save up to 5 watts of power.

The analog voice modules (FXS, FXO, and E/M) and Basic Rate Interface (BRI) digital voice modules for the 4000 Series ISRs contain built-in, nonconfigurable digital signal processors (DSPs) and do not require any additional PVDMs for voice packetization.