Cisco PVDM4-128 ISR 4000 128-Channel High-Density Voice DSP Router Module

The Cisco PVDM4-128 for ISR 4000 Series routers supports up to 128 high-density voice and media processing channels. It enables digital signal processor (DSP) functions such as conferencing, transcoding, and VoIP services in enterprise networks.

The module uses a modular architecture with power-efficient DSPs that scale based on the number of active sessions. Designed for packetized voice applications, it supports codecs including G.711, G.729a/b, iLBC, and Wideband audio formats like G.722 for improved call clarity while reducing bandwidth consumption through compression techniques.

Cisco PVDM4-128 ISR 4000 128-Channel High-Density Voice DSP Router Module