Cisco PVDM4-64 64 Channel Voice DSP Module
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PVDM4-64 Cisco High density Voice DSP Module Refurbished

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Part Number#: PVDM4-64
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Short Description:
PVDM4-64 64 Fourth-generation Channel High-density Packet Voice Digital Signal Processor Module | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Overview

The Cisco PVDM4-64 is a Digital Signal Processor (DSP) module designed to enhance the voice processing capabilities of Cisco network devices. With the capacity to handle 64 voice channels, this module is part of the fourth generation of PVDMs, specifically tailored for high-density packet voice applications. PVDM4 (Packet Voice Digital Signal Processor Module 4) is a type of module made by Cisco that can be installed in a Cisco ISR (Integrated Services Router) or Cisco ASR (Aggregation Services Router) to provide additional voice processing capabilities. This model is a specific model of PVDM4 that has 64 channels, making it a high-density module. Each channel on the model is capable of handling one voice call or fax session at a time. This means that if you have a Cisco router with this item installed, it can handle up to 64 simultaneous voice or fax calls. This is useful for businesses or organizations that need to handle a large volume of voice traffic.

The PVDM4-64 module uses DSP (digital signal processing) technology to process the voice traffic. DSP allows the module to perform functions such as voice compression, echo cancellation, and jitter buffer management, which are important for maintaining the quality of the voice calls.

This item is compatible with several Cisco voice products, including Cisco Unified Communications Manager (CUCM), Cisco Unity Connection, and Cisco Unified Border Element (CUBE). By connecting the model to these products, you can add voice processing capabilities to your Cisco network, and route and manage voice calls more efficiently.

Understanding Digital Signal Processor Modules

Digital Signal Processor (DSP) modules are crucial components in networking devices, especially in the realm of voice communications. They are responsible for processing digital signals, such as voice data, ensuring clear and efficient communication over networks.

Features of Cisco PVDM4-64 DSP Module

64 Voice Channels

The primary feature of the Cisco PVDM4-64 is its ability to handle 64 voice channels simultaneously. This makes it suitable for environments where a high volume of voice communication is a requirement.

Fourth-generation PVDM

Being part of the fourth generation of PVDM modules signifies that the PVDM4-64 incorporates the latest advancements and improvements in voice processing technology.

High-Density Packet Voice Support

The module is optimized for high-density packet voice applications, making it ideal for scenarios where efficient handling of voice data packets is crucial.

Importance of DSP Modules in Networking

DSP modules play a vital role in networking, particularly in voice communication scenarios:

Voice Quality Enhancement

DSP modules contribute to enhancing the quality of voice communication by processing and optimizing voice signals, reducing noise, and ensuring clarity.

Bandwidth Efficiency

By efficiently compressing and decompressing voice data, DSP modules help conserve bandwidth, ensuring that voice communication does not excessively consume network resources.

Support for Advanced Voice Features

DSP modules support advanced voice features such as echo cancellation, voice activation detection, and transcoding, enabling a richer and more feature-rich communication experience.

Benefits of Using Cisco PVDM4-64 DSP Module


With the capacity to handle 64 voice channels, the PVDM4-64 offers scalability, making it suitable for growing communication needs within an organization.

Advanced Voice Processing

As a fourth-generation PVDM module, the PVDM4-64 incorporates advanced voice processing technologies, ensuring optimal voice quality and feature support.

High-Density Packet Voice Optimization

Designed specifically for high-density packet voice applications, this module ensures efficient handling of voice data packets in modern network environments.

Use Cases for Cisco PVDM4-64 DSP Module

Unified Communications

In Unified Communications (UC) environments, where voice, video, and messaging converge, the PVDM4-64 contributes to optimal voice processing, supporting a seamless communication experience.

Contact Centers

For contact centers handling a large volume of voice calls, the PVDM4-64 facilitates efficient voice processing, contributing to improved customer interactions.

Collaboration Platforms

In collaboration platforms that rely on voice and video communication, the PVDM4-64 enhances the overall quality of voice interactions.

Features and Benefits

This model Cisco 64-channel high-density voice DSP module is designed to provide a high level of performance for voice and fax processing in Cisco routers.

In terms of voice processing, this item supports a variety of codecs, including G.711, G.722, G.729, and others. It also supports advanced voice features such as transcoding and conferencing, which can help reduce the amount of bandwidth required to transmit voice calls.

The model has a maximum voice density of 64 simultaneous voice or fax calls per module. This means that a single model module can support up to 64 concurrent calls, depending on the codec and features being used for each call. This makes it an ideal solution for high-density environments such as contact centers and service providers.

In terms of fax processing, this item supports fax relay and T.38 fax relay, which allows faxes to be transmitted over IP networks. This can help improve the reliability and quality of fax transmissions, while also reducing the amount of bandwidth required.

Additionally, the PVDM4-64 supports the Cisco IOS Software-based voice and video processing, which enables it to use the Cisco IOS Software-based voice and video features such as Cisco IOS Software-based transcoding, conferencing, and transrating. The use of software-based DSP has advantages such as more flexibility in terms of codecs supported, the ability to upgrade features without changing hardware, and the ability to run additional features such as security protocols like SRTP.

Performance and Power for the Digital Workplace

PVDM4 (Packet Voice Digital Signal Processor Module 4) is a DSP (digital signal processor) module designed by Cisco for use in their ISR (Integrated Services Router) and ASR (Aggregation Services Router) platforms. This item is a specific version of the PVDM4 module that supports 64 channels of voice compression and expansion.

This module is designed to provide high-density voice processing capabilities in a compact form factor, allowing for the integration of a large number of voice channels into a single router. It allows customers to run multiple concurrent voice sessions, such as IP telephony, video conferencing, and multimedia applications. The model can also be used to offload voice processing tasks from the main processor of the router, increasing overall performance and reducing power consumption.

In terms of performance, this item supports a wide range of voice codecs, including G.711, G.722, G.723, G.726, G.729, and more, with industry-standard voice quality, and also can support video conferencing with H.264, H.265 codecs. Additionally, the module supports advanced features such as silence suppression, echo cancellation, and jitter buffer management. It also provides a level of security, with support for the encryption of voice traffic using the Secure Real-time Transport Protocol (SRTP).

In terms of power consumption, the PVDM4-64 is designed to be energy-efficient, with a low power consumption rating compared to traditional voice processing solutions. This helps to reduce the overall power consumption of the router, which can be especially beneficial in environments where power is limited or expensive.

General Information about this Cisco PVDM4-64

  • Manufacturer: Cisco
  • Model Number or SKU# PVDM4-64
  • Product Name: 64-Channel Voice DSP Module
  • Product Type: Voice Module

Technical Information for Voice DSP Module

  • Application/Usage: Voice
  • Device type: Network Accessories

Miscellaneous of 64 Channel High-density Module

  • Compatibility-
  • Cisco 4451-X Integrated Services Routers (ISRs)

In summary, the Cisco PVDM4-64 Digital Signal Processor Module, with its 64 voice channels, fourth-generation technology, and optimization for high-density packet voice applications, stands as a crucial component in enhancing voice communication within networking environments. Whether deployed in Unified Communications setups, contact centers, or collaboration platforms, the PVDM4-64 ensures scalability, advanced voice processing, and support for high-density packet voice scenarios. As part of Cisco's comprehensive networking solutions, the PVDM4-64 contributes to the efficiency and effectiveness of voice communication in modern network architectures.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

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