Quick tech specs
- Generation 128-Channel High-Density Packet Voice Digital Signal Processor Module (Factory Upgrade from 64-Channel)
- for P/N: C1-CISCO4431/K9
- ISR4431-V/K9-RF
- Voice DSP module
- C1-CISCO4451/K9
- ISR4451-X-AXVK9-WS
Know your gear
The Cisco Fourth-Generation Packet Voice Digital Signal Processor Module (PVDM4) enables Cisco 4451-X Integrated Services Routers (ISRs) to provide rich-media capabilities such as high-density voice connectivity, conferencing, transcoding, media optimization, translating, and secure voice in Cisco Unified Communications Solutions.
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