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Cisco Fourth-Generation 256-Channel High-Density Packet Voice Digital Signal Processor Module (Factory Upgrade From 32-Channel) - Voice DSP Module - PVDM4-32U256-RF
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- PVDM4-32U256-RF
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- Voice-quality management
The 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 feature
The 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 availability
The 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.
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.
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