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by Cisco
Product Line: Cisco Series
Product Type: Packet Voice DSP Module
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Original price $0.00 - Original price $0.00
Original price
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Current price $0.00
Title: Surplus

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Product Description

The PVDM4-128 is a high-density voice and video DSP module with 128 low complexity channels, 96 medium complexity channels, and 64 high complexity channels, designed for integration with Cisco IOS supporting software. It features advanced functions including compression, voice activity detection, jitter management, and 128 ms echo cancellation, operating within a temperature range of 0 °C to 50 °C and consuming 4.85 W power at 3.3 V and 1.47 A. The module, compatible with Integrated Services Card Slots on motherboards or T1/E1 Network Interface Modules (NIM), measures 0.67 in. in height, 2.50 in. in width, and 2.62 in. in depth, with a weight of 0.08 lbs, and adheres to multiple safety and emissions standards including IEC 60950 and CISPR22, Class B.

FAQs for the PVDM4-128

  • What is the maximum operating temperature of the device?
    The maximum operating temperature is 50 °C.
  • How does the device interface with the motherboard?
    The device utilizes an Integrated Services Card Slot on the motherboard or a T1/E1 Network Interface Module (NIM).
  • What power saving features are available?
    Yes, the device includes power saving modes to reduce energy consumption.
  • Can you detail the echo cancellation capabilities?
    Echo cancellation is supported with a tail length of up to 128 milliseconds.
  • What are the safety standards met by this device?
    The device complies with several safety standards, including IEC 60950, AS/NZS 60950-1, CAN/CSA-C22.2 No. 60950-1, GB4943-95, and EN60950-1.
  • What is the weight of the device?
    The device weighs 0.08 lbs.
  • How many high complexity channels does the device support?
    It supports 64 high complexity channels.
  • What software does the device support?
    The device is compatible with Cisco IOS software.
  • What is the device's voltage and current rating?
    The voltage rating is 3.3 V, and the current rating is 1.47 A.
  • What functions does the device offer?
    The device offers compression, voice activity detection, jitter management, and echo cancellation functions.

Product Review

The Cisco PVDM4-128 offers a high density of voice and video channels, supporting up to 128 low complexity, 96 medium complexity, and 64 high complexity channels, catering to various networking needs. While it boasts power-saving modes and a wide operating temperature range, enhancing its efficiency and reliability in diverse environments, it's limited by platform-dependent homologation and system-dependent MTBF, potentially restricting its compatibility and predictability in long-term deployments. Additionally, its comprehensive support for echo cancellation, jitter management, and voice activity detection, alongside compliance with numerous safety and emissions standards, ensures high-quality communication experiences across supported Cisco IOS platforms.


The Cisco PVDM4-128 is a high-density voice and video DSP module designed to enhance the capabilities of Cisco Integrated Services Routers. It offers a versatile solution for supporting a wide range of voice and video applications in a single module, providing exceptional value and performance. This module is compatible with the Cisco IOS software and is engineered to deliver high-quality, high-capacity voice and video services. With the capacity to handle 128 low complexity channels, 96 medium complexity channels, and 64 high complexity channels, the Cisco PVDM4-128 stands out for its flexibility in managing different types of voice and video codecs. This adaptability ensures that the module can support a broad spectrum of voice and video applications, making it an ideal choice for businesses looking to expand their communication capabilities. The module is designed for power efficiency, featuring power-saving modes that reduce energy consumption without compromising performance. This not only helps in lowering operational costs but also supports environmental sustainability efforts. The PVDM4-128 includes a tail length of echo cancellation of 128 ms, which significantly enhances voice quality by reducing echo in voice communications. Integrated into the design are essential functions such as compression, voice activity detection, jitter management, and echo cancellation. These features work together to improve the clarity and reliability of voice and video transmissions, ensuring smooth and professional communication experiences. -
  • Interface: Integrated Services Card Slot on Motherboard or T1/E1 NIM
  • -
  • Power: 4.85 W with a voltage rating of 3.3 V and a current rating of 1.47 A
  • -
  • Dimensions: Height 0.67 in, Width 2.50 in, Depth 2.62 in, and Weight 0.08 lbs
  • Operating within a temperature range of 0 °C to 50 °C, the Cisco PVDM4-128 is built to withstand various environmental conditions, ensuring reliability and longevity. The module meets international safety standards, including IEC 60950 and EN60950-1, and adheres to emissions regulations such as CISPR22 and EN55022, Class B. The Cisco PVDM4-128's homologation and mean time between failures (MTBF) are dependent on the platform it is installed in, reflecting its adaptability and integration capabilities within different systems. This DSP module also complies with flicker and harmonics standards EN61000-3-3 and EN61000-3-2, further demonstrating its commitment to quality and regulatory compliance. In summary, the Cisco PVDM4-128 is a sophisticated and efficient solution for businesses looking to enhance their voice and video communication infrastructure. Its wide range of supported channels, power efficiency, and comprehensive feature set, coupled with stringent safety and emissions compliance, make it a reliable choice for enterprises aiming to improve their networking hardware with advanced, high-capacity voice and video processing capabilities.


    Item CodeCisco PVDM4-128
    Channel Count128
    Low Complexity Channel Support128
    Medium Complexity Channel Capacity96
    High Complexity Channel Availability64
    Module DensityHigh
    Compatible SoftwareCisco IOS
    Energy Efficiency FeaturesAvailable
    Echo Cancellation Tail Length128 milliseconds
    Connectivity InterfaceIntegrated Services Card Slot or T1/E1 Network Interface Module
    Operational Temperature Range - Minimum0 degrees Celsius
    Operational Temperature Range - Maximum50 degrees Celsius
    Electrical Voltage Requirement3.3 Volts
    Current Consumption1.47 Amperes
    Energy Consumption4.85 Watts
    Module Height0.67 inches
    Module Width2.50 inches
    Module Depth2.62 inches
    Module Weight0.08 pounds
    Compliance StandardsIEC 60950, AS/NZS 60950-1, CAN/CSA-C22.2 No. 60950-1, GB4943-95, EN60950-1
    Key FeaturesData Compression, Detection of Voice Activity, Management of Jitter, Cancellation of Echo
    CertificationDepends on Platform
    Mean Time Between Failures (MTBF)Varies with System
    Radiated EmissionsCISPR22, Class B; EN55022, Class B; CFR47, Part 15, Subpart B, Class B
    Flicker Standards ComplianceEN61000-3-3
    Harmonic Current ComplianceEN61000-3-2

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