PVDM4-256 Cisco-PVDM4-256-Module

Cisco PVDM4-256 - 256-Channel Digital Signal Processor Module

The Cisco PVDM4-256 is a high-density digital signal processor (DSP) module designed for Cisco ISR 4000 Series routers. It provides up to 256 channels of voice and video processing, enabling enterprises to deliver secure, scalable, and high-quality unified communications services.

🔧 Key Specifications

• Model: PVDM4-256
• DSP Channels: Up to 256 voice/video channels
• Compatibility: Cisco ISR 4000 Series routers (installed in motherboard or T1/E1 NIMs)
• Functions:
  • Voice compression and transcoding
  • Conferencing and universal transcoding
  • Secure voice (SRTP)
  • Video conferencing and media termination
• Features:
  • Hot-swappable module
  • Supports IP telephony, unified communications, and contact center deployments
  • Enables flexible scaling of voice/video services
  • Centralized management via Cisco IOS XE
• Form Factor: Plug-in DSP module
• Dimensions: Compact module for ISR 4000 chassis slots
• Power: Draws power from host router

🧩 Ideal Use Cases

• Enterprises deploying Cisco Unified Communications Manager Express (CME) or SRST
• Branch offices requiring local voice/video processing
• Contact centers needing conferencing and transcoding services
• Organizations seeking scalable DSP resources for IP telephony

⚙️ Licensing & Expansion
The PVDM4-256 requires a compatible Cisco ISR 4000 router chassis. Additional DSP modules can be installed for higher channel density.