Cisco Fourth-Generation 256-Channel High-Density Packet Voice Digital Signal Processor Module (Factory Upgrade from 32-Channel)
Voice DSP module
for Cisco 4451-X
Overview
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, transrating, and secure voice in Cisco Unified Communications Solutions.¦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.
Voice-quality management
Energy-saving feature
Cisco platform availability
Voice-quality managementThe PVDM4 modules perform compression, voice-activity-detection, jitter-management, and echo-cancellation functions. The echo cancellation offered in the PVDM4 modules has a tail length of 128 milliseconds.Energy-saving featureThe PVDM4 DSPs offer multiple power-saving modes, including a power-saver mode when the module is not in use. In power-saver mode each PVDM4 can save up to 5 watts of power.Cisco platform availabilityThe PVDM4 modules are supported on Cisco 4451-X platforms. The platform has one slot for the PVDM4 module. You can plug any additional PVDM4 modules onto the T1/E1 NIMs.
Compliant StandardsCISPR 22 Class B, CISPR 24, EN 61000-3-2, IEC 61000-4-11, IEC 60950, EN 61000-3-3, EN55024, EN50082-1, EN55022 Class B, AS/NZS 60950-1, EN 61000-4-4, EN 61000-4-2, EN 61000-4-3, EN 61000-4-6, EN 61000-4-5, EN 61000-4-8, UL 60950-1, EN 60950-1, UL 60950-1 Second Edition, FCC CFR47 Part 15 B, GB 4943, EN 60950-1 Second Edition, NOM-019-SCFI-1998, CAN/CSA-C22.2 No. 60950-1