Save big on the Cisco PVDM4-64 — a 64-channel high-density voice DSP module that delivers enterprise-grade voice, conferencing, and transcoding for Cisco ISR 4000 Series routers. Professionally tested and backed by Reef Telecom's industry-leading 10-year warranty.

Key Specifications

• Part Number: PVDM4-64
• Module Type: Fourth-Generation Packet Voice Digital Signal Processor (PVDM4)
• Low-Complexity Voice Channels: Up to 64
• Medium-Complexity Voice Channels: Up to 48
• High-Complexity Voice Channels: Up to 32
• Supported Codecs: G.711, G.729a, G.729ab, G.722, G.726, iLBC, and more
• Power Consumption: 4.85W (with power-saver mode when idle)
• Dimensions: 1.7 x 5.1 x 6.7 cm | Weight: 36g

Features & Capabilities

• High-density voice connectivity, conferencing, transcoding, and media optimization
• Universal transcoding — convert between any supported codecs via Cisco IOS
• Voice-quality management with compression, VAD, jitter management, and 128ms echo cancellation (ITU-T G.168)
• Energy-saving DSP modes — saves up to 5W when idle
• Installs on motherboard slot or T1/E1 NIM for TDM-IP voice applications

Compatibility

Designed for Cisco ISR 4000 Series routers including the ISR 4331, 4351, 4431, and 4451-X. Also supports Cisco Unified Communications Manager and Communications Manager Express. Note: Not compatible with ISR 4461.

Why buy from Reef Telecom? Every refurbished module is professionally inspected and tested. Enjoy our 10-year warranty and free shipping on orders over $300.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.