Dialogic D/4PCIUF and D/4PCIU4S Combined Media Boards

D4 PCI Boards


The four-line Dialogic® D/4PCIUF and D/4PCIU4S combined media boards are ideal for small- and medium-sized enterprise computer telephony (CT) applications that require high-performance, cost aggressive media processing, but do not require the large-scale system sophistication of SCbus- or CT Bus-based products. The boards use the same application programming interface (API) as their predecessor (D/4PCI), making it easy to scale existing applications to take advantage of their power and features in a single PCI or PCI Express slot. The boards have improved voice quality and automatic gain control (AGC), so even the weakest telephone signals can be recorded and replayed with complete clarity. 

The D/4PCIUF (voice + fax) and D/4PCIU4S (voice + speech/CSP) give application developers a powerful platform for creating sophisticated interactive voice response (IVR) applications for the small- and medium-sized enterprise market segment. Caller ID support lets applications such as IVR receive calling party information via a telephone trunk line. Caller ID is supported for North America (CLASS protocol), the United Kingdom (CLI protocol), and in Japan (CLIP protocol). 

Key Features

Supports up to four channels of DSP-based onboard fax (D/4PCIUF only)

Reduces the number of boards per system

Supports up to four channels of continuous speech processing (D/4PCIU4S only)

Provides a flexible speech processing technology, which, when coupled with efficient drivers, off-loads critical real-time signal processing in speech-enabled applications to on-board DSPs. Reduces system latency, increases recognition accuracy, and improves overall system response time for speech solutions

Separate models available with Universal PCI or PCI Express edge connector

Universal PCI form factor compatible with 3.3 V and 5.0 V bus signals; and PCI Express form factor compatible with x1 lane configuration or higher

A variety of country-specific approvals

Expands an application's ability to serve several global market segments

Supports G.726 and GSM coders

Enables unified messaging applications that meet VPIM standards

Voice coding on a channel-by-channel basis

Allows for a beneficial tradeoff between disk storage and voice quality

Half-size PCI or PCI Express form factor

Cost-effective systems can be built using the up-to-date Commercial Off-The-Shelf (COTS) chassis


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Ordering Information

Use the Purchase page linked below to find partners to purchase Dialogic products. The order codes below are for your reference when making a purchase.

Where to Buy
ProductOrder CodeDescription



Loop-Start, PCI



Loop-Start, PCI



Loop-Start, PCI, Europe



Loop-Start, PCI, Europe



Loop-Start, PCIe



Loop-Start, PCIe



Loop-Start, PCIe, Europe



Loop-Start, PCIe, Europe