Description
The Cisco PVDM4-32U256 is a high-performance DSP (Packet Voice Digital Signal Processor) module designed to deliver reliable voice and media processing for enterprise and service provider networks. Part of the Cisco PVDM4 Series, this plug-in module supports up to 32 voice channels and features 256MB of onboard DRAM, enabling consistent, high-quality voice, conferencing, and video services.
Engineered for scalability and efficiency, the PVDM4-32U256 integrates seamlessly with compatible Cisco ISR platforms, allowing organizations to expand communication capabilities without redesigning their network infrastructure. Its energy-efficient design, broad codec support, and hot-swappable installation make it an ideal solution for modern IP telephony, unified communications, and multimedia deployments.
Key Features
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Supports up to 32 voice channels
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256MB onboard DRAM for enhanced media processing
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High-density packet voice and video support
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Energy-efficient, enterprise-grade design
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Modular and scalable architecture
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Hot-swappable plug-in module
| Specification | Details |
|---|---|
| Brand | Cisco |
| Model | PVDM4-32U256 |
| Series | PVDM4 |
| Product Type | DSP (Packet Voice) Module |
| Form Factor | Plug-in Module |
| Voice Channels | Up to 32 |
| DSP Resources | 32 |
| Total Memory | 256 MB DRAM |
| Maximum Conferencing Sessions | Up to 128 |
| Codec Support | G.711, G.729, G.722, and others |
| Video Support | Yes |
| Networking Protocols | SIP, SCCP, MGCP, H.323 |
| Encryption | Secure RTP, TLS |
| Real-Time Transport Protocol (RTP) | Supported |
| Hardware Compatibility | Cisco ISR G2 Routers |
| Installation | Hot-swappable |
| Power Consumption | Low |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 70°C |
| Relative Humidity | 10% to 90% (non-condensing) |
| Compliance | RoHS |
| Dimensions (H × W × D) | 0.20" × 3.18" × 5.20" |
| Scalability | Modular, easily upgradable |
Payment & Security
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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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