Develops, designs, contracts for the manufacture of and markets information technology products, including transit communications, digital messaging systems, digital filter systems and transcribers and electronic destination sign systems. (Nasdaq: TBUS).

Design and manufacture of innovative access network solutions, encompassing Pair Gain Systems, ISDN extenders and solutions for expanding DSL coverage.

Manufacturer of digital microwave radios, wireless local loop telephony systems, broadband wireless access products, secure communications systems, and military radios.

Develops and markets IP QoS Routers and VoIP Gateways.

Providing solutions in the last mile, using G.SHDSL technology, 2Mb modems, EMX-Ethernet pair gain, V5.2 Access Node concentrators and related products.

Distributor voice and call loggers. Located in Haarlem, Netherlands.