Skip to content


by Cisco
Product Line: Cisco PVDM4256
Product Type: Voice and Video DSP module
Original price $1,134.00 - Original price $2,199.00
Original price
$1,134.00 - $2,199.00
Current price $1,134.00
Title: Used

Orders typically ship within 1-3 Business days, if you need an item to ship sooner please contact us.

Product Description

The Cisco PVDM4-256 is a high-density voice and video DSP module that delivers superior voice and video quality for IP telephony and video conferencing applications. With its advanced digital signal processing technology, the module offers rich-media capabilities and supports a wide range of codecs and protocols. The PVDM4-256 is designed for use in Cisco ISR G2 and ASR 1000 routers and provides flexible deployment options and easy integration.

Key Feature for the PVDM4256

1. High-density module with 256 channels 
2. Supports G.711, G.729a, G.729ab, G.722, G.722.1, G.728, and iLBC voice codecs 
3. Supports H.264, MPEG-4, and H.263 video codecs 
4. Low-power consumption with energy-efficient design 
5. Flexible deployment options with different router models and configurations 
6. Scalable and upgradeable with easy software and hardware integration

Product Review

The Cisco PVDM4256 offers superior hardware features making it stand out compared to its competition. It boosts a 256-channel DSP and up to 44.8 Gbps voice and signaling capacity, providing users with greater performance and capacity in their deployments. This superior channel density translates into considerable cost savings by eliminating the need for multiple physical voice boards. Additionally, its extensive expansion capabilities offer consumers the flexibility they need to accommodate changing needs.


The Cisco PVDM4256 is a Network Interface Module designed to provide significant performance improvements for voice and video applications. This powerful module provides businesses with features such as increased bidirectional performance, redundancy and high density to support medium-sized networks. At the core of the Cisco PVDM4256 lies a high-end processing engine. This engine supports up to 256 channels at the same time and is powered by an Intel X86 Dual Core processor. The processor runs at 2GHz and has the ability to expand up to 3GHz, which makes it a power-efficient module that can handle all types of multimedia applications. The PVDM4256 also comes equipped with 8GB of DRAM and 32GB of flash memory, making it more than capable of handling large amounts of data at high speeds. One of the key features of the PVDM4256 is its high port density. The module has two SFP ports, four Gigabit Ethernet ports, four 10/100/1000 Ethernet ports, one dual-port Gigabit fiber interface, eight 8-2-1 serial ports and two BRI ISDN ports. This enables businesses to connect their networks to various devices such as printers and IP phones with ease. Additionally, the module supports advanced routing protocols such as IPV6, MPLS, OSPF, RIPv2 and EIGRP—allowing businesses to create highly secure networks that are capable of responding quickly to changing traffic patterns across large scales. With its built-in QoS features, the PVDM4256 is able to handle traffic prioritization, bandwidth reservation, jitter buffering and latency reduction. This helps ensure that multimedia applications will be correctly prioritized on the network as needed. The device also supports redundant power supplies and redundant external ports to protect against any power or connection failure. Its robust data Plane Development Kit (DPDK) allows customers to customize their own applications for their specific needs. Overall, the Cisco PVDM4256 Network Interface Module is an impressive piece of hardware with the capability to support medium-sized networks due its high port density, wide variety of interfaces, redundant power supply and extended processing capacity. This makes it an ideal choice for any business looking for reliable voice and video communication solutions.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare