- Hermstedt UK
Distributors of ISDN TA's and software for Macintosh computers.
www.hermstedt.co.uk
- Andrews & Arnold Ltd.
ISDN information and products.
www.aa.nu/isdn
- AudioTX
Provides software-only ISDN codec, additionally capable of live audio transmission over IP networks, for broadcast and professional audio use.
www.audiotx.com
- World Telecom Labs
Produces the INX carrier-grade switching platform targeting carriers, ISPs, and corporate customers with a system of managing voice, data, and other forms of communications.
www.wtl.be
- Patapsco Designs Ltd.
ISDN leased line backup products and other ISDN systems such as PRI to BRI conversion and bandwidth on demand.
www.patapsco.co.uk
- SEG Communications
Offers a full range of ISDN equipment and accessories, including routers and terminal adapters, from leading manufacturers.
www.seg.co.uk
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