Cisco PVDM4-256

The Cisco PVDM4-256 is a digital signal processor (DSP) module used in Cisco routers and switches. It is part of the Cisco Packet Voice Digital Signal Processor Module (PVDM) series, specifically the fourth generation (PVDM4). The PVDM4-256 module provides DSP resources for voice and video applications, such as voice and video conferencing, transcoding, media termination points, and voice gateway services. It supports up to 256 channels of voice or video processing, depending on the specific codec and application requirements. The PVDM4-256 module is typically used in Cisco ISR G2 and ISR 4000 series routers, as well as some Cisco Catalyst switches. It helps enable high-quality voice and video communication services in Cisco networking environments.