Save up to 70% over new list price on this fully tested Cisco PVDM4-128 128-channel high-density voice DSP module, backed by Reef Telecom's industry-leading 10-year warranty.

Key Specifications

• Part Number: PVDM4-128
• DSP Channels: 128 (low complexity), 96 (medium), 64 (high complexity)
• Supported Codecs: G.711, G.722, G.726, G.728, G.729, iLBC
• Voice Services: Conferencing, transcoding, media optimization, echo cancellation
• RAM: 512 MB
• Power Consumption: 4.85W
• Dimensions: 0.67 x 2.50 x 2.62 in. (1.7 x 5.1 x 6.7 cm)
• Form Factor: Plug-in module (motherboard slot or T1/E1 NIM)

Platform Compatibility

The Cisco PVDM4-128 is designed for the Cisco ISR 4000 Series routers, including the ISR 4321, 4331, 4351, 4431, and 4451-X (excludes ISR 4461). Install directly into the motherboard PVDM4 slot for IP-based conferencing, transcoding, and media optimization, or onto a T1/E1 NIM for TDM voice connectivity. Requires Cisco IOS XE Release 3.15S or later.

Rich-Media Capabilities

Enable high-density voice connectivity, video conferencing, universal transcoding, transrating, and secure voice for Cisco Unified Communications solutions. The PVDM4-128 features multicore DSP technology with ITU-T G.168 compliant echo cancellation (128ms tail length) and multiple power-saving modes.

Why Buy from Reef Telecom?

• 10-year warranty — the longest in the industry
• Free shipping on orders over $300
• Every module fully tested and verified before shipment
• Expert support from certified telecom professionals

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.