Telephony Cards

First-class ISDN hardware cards and adapters as well as SS7 carriers from Dialogic® and Sangoma

BRESSNER Technology offers a versatile range of telephony cards and media boards that support both digital and analog communication solutions. Following the acquisition of the Converged Communication Division (CCD) from Dialogic® in 2018, Sangoma now provides the proven Diva Media Boards, which are ideal for voice, speech, conferencing, VoIP, modem, and fax applications.

In addition, our portfolio includes transcoding and failover cards as well as ISDN hardware cards that meet the highest standards. Whether for small businesses or carrier-grade applications, our products deliver reliable performance and flexible deployment options.

Telephony cards for digital or analog communicationfor failoverfor voice, speech, conference and VoIP functionsfor protocol transcodingwith low-profile form factor

Dialogic® Diva® 4BRI-8 media board

4x BRI interfaces with a total of 8 channels

Supports voice, speech, conference, VoIP, modem and fax transmissions

Compatible with CAPI, COM port, WAN miniport, TTY and the Dialogic® Diva® APIs

Half-size PCIe design for easy installation in various systems

Seamless combination with other Dialogic® Diva® media boards for maximum flexibility
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Dialogic® Diva® Analog-2 media board

2-channel analog media board for voice, VoIP and fax applications

Active analog adapter for integration into hybrid telephony environments

Supports voice, speech, conference, VoIP, modem and fax functions

Space-saving low-profile form factor, ideal for compact servers

Compatible with Diva® APIs, CAPI, COM port, WAN miniport and TTY for maximum flexibility
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Dialogic® Diva® BRI-2 media board

ISDN BRI media board with two BRI ports and four voice channels

Active ISDN adapter for voice, fax, VoIP and data communication

Supports voice, speech, conference, modem and fax functions

Compact low-profile form factor for space-saving integration

Seamless compatibility with other Dialogic® Diva® media boards
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Dialogic® Diva® V-xPRI modem board

Available with 1, 2, 4 or 8 E1/T1 ports for different scaling requirements

Support for up to 240 simultaneous modem channels per board

Customizable channel count through software-based licensing options

Full support for Windows and Linux with COM/TTY emulation

Low energy consumption for resource-saving and sustainable use
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Dialogic® Diva® PRI/E1-30 media board

Supports up to 30 simultaneous voice and fax channels on one E1/PRI connection

Ideal for call centers, IVR systems, unified communications and SIP trunking

Voice, speech, conference, VoIP, modem and fax support with V.34 fax transmission

Supports CAPI, COM port, WAN miniport and TTY for seamless integration

Robust architecture for professional enterprise telecommunication applications
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Dialogic® Diva® V-1PRI/E1/T1-30 media board

30-channel ISDN PRI media board for high-performance voice and communication applications

Active ISDN PRI adapter with support for digital voice and data processing

VoIP, modem and fax support flexibly scalable via license

Half-size PCIe form factor for space-saving integration into existing systems

Seamless compatibility with other Diva® Media Boards for analog, ISDN BRI and VoIP applications
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Sangoma PSTN cards

Supports FXS/FXO, BRI, PRI, SS7, E1/T1/J1 and GSM interface cells

Optional Telco-grade echo suppression for interference-free calls

Diagnostic and debugging toolkit for fast error analysis

Supports Windows and Linux for maximum flexibility

Seamless connection between classic PSTN and modern VoIP networks
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Comprehensive VoIP connectivity solutions

BRESSNER Technology offers a versatile portfolio of Unified Communications (UC) platforms, including Session Border Controllers (SBC), PBX, and VoIP connectivity solutions that meet the highest standards of quality and performance. In addition to a wide range of telephony and ISDN cards, our portfolio includes complete UC platforms specifically designed for cross-company communication in small and medium-sized businesses as well as large enterprises.

Together with our partner Sangoma Technologies, we provide customized IP PBXact telephone systems, reliable Session Border Controllers, and high-performance Voice-over-IP gateways. Complemented by the proven CCD product lines from Dialogic®, we deliver flexible, scalable solutions for a future-proof communication infrastructure.

Can’t find what you’re looking for?

An overview of our services

Consulting Service

Guaranteed free consultation for your project

Built-to-Order Systems

Design, development and production of individual systems according to customer requirements

OEM & ODM Design

Development and design of individual custom-made products for your application

Test & Certifications

Comprehensive validation and certification service

Lifecycle Management

Professional lifecycle management service for reliable availability of systems and components

RMA Services

Return, repair and replacement of defective hardware under warranty inspection

Repair & Replacement

Comprehensive warehouse logistics to simplify return processes, minimize downtime, and ensure your business’s success

Global Service Network

Our global network of experts enables us to provide worldwide support

Develop your individual communication solution with Diva Media Boards

Diva Media Boards from BRESSNER Technology provide a powerful foundation for a wide range of communication applications. Supporting T1/E1/PRI, BRI, and analog connections, these telephony cards enable functions such as voice, speech, conferencing, VoIP, modem, and fax. They are suitable for both standard applications and the development of new solutions and are available in half-size and full-size PCI Express formats.

The boards stand out with integrated CPUs, ample RAM, and high-performance FPGA chips that facilitate fast data streams between the host CPU, DSPs, and telephone lines. By offloading computationally intensive tasks from the host server, Diva Media Boards ensure consistent service quality and prevent performance bottlenecks.

Can’t find what you’re looking for?

Do you need help?

Kontaktieren Sie unseren Vertrieb bei Fragen zu Produkten oder unseren hauseigenen Support bei technischen Fragen!

Vertrieb:
E-Mail: vertrieb@bressner.de
Telefon: +49 8142 47284-70

Support:
E-Mail: support@bressner.de
Telefon: +49 8142 47284-44

FAQs

What is a PSTN card?admin2025-02-03T13:49:41+01:00

What is a PSTN card?

PSTN (Public Switched Telephone Network) cards are hardware solutions that connect telephone systems, IVRs and call center applications to traditional telephone networks. Sangoma’s award-winning PSTN cards are characterized by high quality and reliability. They support a variety of protocols such as Analog, PRI, BRI, SS7 and CAS-MFCR2 and are ideal for Asterisk and FreePBX based telephone systems and API integrations.

What is the difference between analog and digital telephony cards?admin2025-02-03T13:47:45+01:00

What is the difference between analog and digital telephony cards?

Analog cards are used for classic telephone connections, while digital cards such as PRI or BRI cards are designed for ISDN connections. Digital cards generally offer higher voice quality and allow several calls to be processed simultaneously.

What form factors are available for telephony cards?admin2025-02-03T14:27:32+01:00

What form factors are available for telephony cards?

Telephony cards are available in various form factors, including half-size and full-size PCI Express, to be compatible with most commercially available servers and motherboards.