Cisco PVDM3-256 256-channel high-density voice and video DSP module PVDM3256

Description:

The Cisco PVDM3-256 DSP Module is a high-density voice and video processing module used in Cisco Integrated Services Routers to enable advanced voice, video, and transcoding capabilities in unified communications systems. It supports up to 256 channels of digital signal processing for voice compression, conferencing, transcoding, and media resource services within enterprise VoIP infrastructures. Commonly installed in Cisco ISR G2 routers deployed in enterprise telephony systems, unified communications platforms, and branch office voice gateways, this module enhances real-time media processing performance. Network administrators, VoIP engineers, and system integrators use this module for expanding voice capacity, replacing failed DSP resources, or upgrading Cisco router-based unified communications deployments. 

Applications:

The Cisco PVDM3-256 module is used in enterprise unified communications networks to provide high-density digital signal processing for voice and video services. It is commonly deployed in Cisco Integrated Services Routers operating as voice gateways, IP telephony systems, and unified communication platforms where real-time voice compression, conferencing, and transcoding functions are required. Organizations install this module in branch office routers and enterprise communication infrastructure to support scalable VoIP services and reliable media processing.

Technical Specifications:

• Brand: Cisco
• Manufacturer Part Number (MPN): PVDM3-256
• Alternate Part Number: PVDM3256
• Product Type: Digital Signal Processor (DSP) Module
• Series: Cisco PVDM3 (Packet Voice Digital Signal Processor Module 3)
• Channel Capacity: Up to 256 voice channels
• Function: Voice and video DSP processing
• Supported Services: Voice compression, conferencing, transcoding, media resource processing
• Compatible Platforms: Cisco Integrated Services Routers Generation 2 (ISR G2)
• Installation Type: Internal router module slot
• Codec Support: Multiple voice codecs including G.711, G.729, and others
• Application Support: VoIP, unified communications, voice gateway processing
• Form Factor: Internal high-density DSP module

Common Replacements:

• Cisco PVDM3-128
• Cisco PVDM3-64
• Cisco PVDM4-256