Description
The Cisco PVDM4-256 is a high-density Packet Voice Digital Signal Processor (DSP) module designed to deliver advanced voice and media services for Cisco Integrated Services Routers. Supporting up to 256 voice channels, this module enables high-performance voice packetization, conferencing, transcoding, and media optimization in unified communications environments.
Built on Cisco’s PVDM4 architecture, the PVDM4-256 provides scalable DSP resources for enterprise and service provider deployments requiring reliable digital voice connectivity over IP networks. It supports a wide range of industry-standard voice codecs and integrates seamlessly into compatible Cisco ISR platforms via the motherboard or supported T1/E1 modules.
Ideal for organizations expanding voice infrastructure, the PVDM4-256 delivers efficient processing, low power consumption, and enterprise-grade reliability for mission-critical communications.
| Specification | Details |
|---|---|
| Brand | Cisco |
| SKU | PVDM4-256= |
| Product Type | Packet Voice Digital Signal Processor (DSP) Module |
| Series | PVDM4 |
| Maximum Voice Channels | 256 |
| Codec Support | G.711, G.722, G.726, G.728, G.729, G.729a/b/ab, iLBC, Fax Relay, Modem Relay |
| DSP Architecture | Multicore DSP |
| Supported Functions | Voice packetization, conferencing, transcoding, transrating, echo cancellation |
| Form Factor | On-board motherboard DSP module |
| Slot Compatibility | Cisco ISR motherboard or supported T1/E1 modules |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Power Consumption | Low-power DSP module |
| Deployment | Enterprise and service provider voice networks |
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
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Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
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