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by Cisco
Product Line: Cisco PVDM4256
Product Type: Voice and Video DSP module
Original price $1,134.00 - Original price $2,199.00
Original price
$1,134.00 - $2,199.00
Current price $1,134.00
Title: Used

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Product Description

The PVDM4-256 Cisco module offers 256 low complexity channels, 192 medium complexity channels, and 128 high complexity channels, supporting a high-density voice and video deployment. It integrates seamlessly with the motherboard or T1/E1 Network Interface Modules (NIMs) through an Integrated Services Card Slot, and operates efficiently between 0 °C and 50 °C, with a power consumption of 4.85 W. This module enhances network performance with features like 128 ms echo cancellation, voice activity detection, and jitter management, while ensuring compliance with multiple safety and emissions standards.

Key Feature for the PVDM4256

  • Q: What is the maximum operating temperature of the networking hardware?
    A: The maximum operating temperature is 50 °C.
  • Q: How many high complexity channels does the device support?
    A: It supports 128 high complexity channels.
  • Q: Does the device offer power saving modes?
    A: Yes, it includes power saving modes.
  • Q: What type of interface is used for integrating the device?
    A: The device uses an Integrated Services Card Slot on Motherboard or T1/E1 NIM for integration.
  • Q: What is the power consumption of this networking hardware?
    A: The power consumption is 4.85 W.
  • Q: What safety standards does the device comply with?
    A: It complies with IEC 60950, AS/NZS 60950-1, CAN/CSA-C22.2 No. 60950-1, GB4943-95, and EN60950-1 standards.
  • Q: What are the dimensions of the device?
    A: The dimensions are 0.67 in. in height, 2.50 in. in width, and 2.62 in. in depth.
  • Q: What kind of functions does the device offer?
    A: It offers compression, voice activity detection, jitter management, and echo cancellation functions.
  • Q: What is the echo cancellation tail length of the device?
    A: The echo cancellation tail length is 128 ms.
  • Q: What is the device's voltage and current rating?
    A: The voltage rating is 3.3 V, and the current rating is 1.47 A.

Product Review

The Cisco PVDM4-256 offers a wide range of channel densities, supporting up to 256 low complexity channels, 192 medium complexity channels, and 128 high complexity channels, making it suitable for various voice and video applications. With its power-saving modes and a comprehensive set of features including compression, voice activity detection, jitter management, and echo cancellation, it ensures efficient and reliable operation. However, its performance and compatibility are highly dependent on the supporting Cisco IOS and the specific hardware platform it is installed in, which may limit its flexibility in mixed environment deployments.


The Cisco PVDM4-256 is a high-density voice and video DSP module designed to enhance the capabilities of Cisco Integrated Services Routers. This module is specifically engineered to support complex voice and video processing tasks, offering a significant advancement in performance for voice, video, and data integration. The PVDM4-256 is compatible with Cisco IOS software, providing a seamless integration and a comprehensive suite of features for network management and security. This module comes equipped with 256 channels, supporting various levels of complexity across these channels. It can handle 256 low complexity channels, 192 medium complexity channels, and 128 high complexity channels, making it a versatile solution for a wide range of networking demands. The high density of the PVDM4-256 ensures efficient handling of multiple voice and video streams, optimizing the use of network resources. Power efficiency is a key feature of the PVDM4-256, with power-saving modes that reduce energy consumption without compromising performance. The module operates within a voltage rating of 3.3 V and a current rating of 1.47 A, with a total power consumption of 4.85 W. Its design focuses on minimizing energy usage while maintaining high performance, aligning with modern demands for eco-friendly technology solutions. The hardware specifications of the PVDM4-256 include: - A tail length of echo cancellation of 128 ms, providing clear audio communication by eliminating echo. - An interface for the Integrated Services Card Slot on the motherboard or T1/E1 Network Interface Modules (NIMs), offering flexibility in deployment. - Operating temperatures ranging from 0 °C to 50 °C, ensuring reliability under a variety of environmental conditions. The physical dimensions of the module are compact, with a height of 0.67 inches, a width of 2.50 inches, and a depth of 2.62 inches. It weighs just 0.08 lbs, allowing for easy installation without significant space requirements. Safety and regulatory compliance are paramount for the PVDM4-256, meeting standards such as IEC 60950 and EN60950-1. It also complies with emissions standards including CISPR22 and EN55022, both Class B, ensuring that it does not interfere with other equipment. The functions supported by the PVDM4-256 are crucial for modern communication needs. These include: - Compression, reducing the size of voice and video data to optimize bandwidth usage. - Voice Activity Detection, enhancing efficiency by only transmitting data when voice is detected. - Jitter Management, ensuring smooth delivery of voice and video packets. - Echo Cancellation, eliminating echo for clear audio communication. The module's homologation and Mean Time Between Failures (MTBF) are dependent on the platform it is used with, highlighting its adaptability to different network environments. In summary, the Cisco PVDM4-256 is a comprehensive solution for enhancing voice and video capabilities in networking environments. Its high channel density, power efficiency, and broad support for complex processing tasks make it an essential component for organizations looking to improve their communication infrastructure.


Item Code Cisco PVDM4-256
Manufacturer Cisco
Channel Capacity 256
Low Complexity Channel Count 256
Medium Complexity Channel Count 192
High Complexity Channel Count 128
Channel Density High
Compatible Software Cisco IOS
Energy Efficient Modes Available
Echo Cancellation Tail Duration 128 ms
Connection Interface Integrated Services Card Slot or T1/E1 Network Interface Module
Operational Temperature Range Min 0 °C
Operational Temperature Range Max 50 °C
Rated Voltage 3.3 V
Current Specification 1.47 A
Energy Consumption 4.85 W
Physical Height 0.67 in.
Physical Width 2.50 in.
Physical Depth 2.62 in.
Unit Weight 0.08 lbs
Compliance Standards IEC 60950, AS/NZS 60950-1, CAN/CSA-C22.2 No. 60950-1, GB4943-95, EN60950-1
Operational Features Data Compression, Detection of Voice Activity, Management of Jitter, Echo Reduction
Certification Dependence Platform Specific
Mean Time Between Failures (MTBF) Varies with System
Radiation Standards CISPR22, Class B; EN55022, Class B, CFR47, Part 15, Subpart B, Class B
Flicker Norms EN61000-3-3
Harmonic Compliance EN61000-3-2

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