Description
The Cisco PVDM4-256 Packet Voice Digital Signal Processor Module delivers high-density voice and media processing for Cisco Integrated Services Routers. Designed to support large-scale unified communications deployments, this module enables advanced voice services including conferencing, transcoding, transrating, and media optimization.
With support for up to 256 voice channels, the PVDM4-256 is ideal for enterprise and service provider environments requiring reliable, high-performance voice processing. Its multicore DSP architecture ensures efficient handling of digital voice workloads while maintaining a compact footprint and low power consumption. The module integrates seamlessly into supported Cisco platforms, providing a scalable foundation for IP voice, collaboration, and secure communications solutions.
| Specification | Details |
|---|---|
| Brand | Cisco |
| SKU | PVDM4-256 |
| Product Type | Packet Voice Digital Signal Processor Module |
| Channel Capacity (Low Complexity) | Up to 256 Channels |
| Channel Capacity (Medium Complexity) | Up to 192 Channels |
| Channel Capacity (High Complexity) | Up to 128 Channels |
| Supported Services | Voice packetization, conferencing, transcoding, transrating |
| DSP Architecture | Multicore DSP technology |
| Form Factor | On-board motherboard module |
| Slot Type | Integrated Services Card (ISC) slot or T1/E1 module slot |
| Operating Temperature | 32°F to 122°F (0°C to 50°C) |
| Power Consumption | Approximately 4.85 W |
| Voltage | 3.3 V |
| Typical Use Case | Enterprise and branch voice infrastructure |
| Compatibility | Supported Cisco Integrated Services Routers |
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Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
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.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
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