[shortdesc] Voice DSP module for Cisco 4451-X [/shortdesc] [properties] Properties Cisco PVDM4-32 Digital Signal Processor Module Description 32-channel DSP module supporting voice and video capabilities for Cisco ISR 4000 Series routers Product Type Digital Signal Processor (DSP) Module Compatibility Cisco 4000 Series ISR routers (except ISR 4461) Mount Type Motherboard or NIM module slot [/properties] [specifications] Specifications PVDM4-32 Low-Complexity Voice Sessions Up to 32 channels Medium-Complexity Voice Sessions Up to 24 channels High-Complexity Voice Sessions Up to 16 channels Operating Temperature 32 to 122°F (0 to 50°C) Power Consumption 4.85W Voltage 3.3V Current 1.47A Dimensions (H x W x D) 1.7 x 5.1 x 6.7 cm Weight 36 g [/specifications] [accesories] Included Accessories DSP module only (PVDM4-32) Optional Accessories T1/E1 NIM voice modules, Cisco ISR 4000 motherboards with PVDM slots [/accesories] Cisco PVDM4-32 Expansion Module The PVDM4 modules are supported on the Cisco 4451-X platform. You can plug them directly into the single slot on the router motherboard or onto the network interface module (NIM) that supports T1/E1 ports. Enhanced DSP architecture accommodates a packet-processing engine optimized for rich-media voice applications, while concurrently supporting the time-division multiplexing IP (TDM-IP) voice framework. A PVDM4 module plugged onto the motherboard delivers IP-based voice services such as conferencing, media optimization, and transcoding. A PVDM4 module plugged onto the NIM daughter card would be used for voice T1/E1 connectivity. All the PVDM4 modules have the same form factor and are field-upgradable to allow you to easily scale your voice deployments.