Manufacturers

Routing, Switching & VOIP

3Com
Alcatel
Ascend Communications
Adtran
Cisco Systems
Fujitsu
Juniper Networks
Motorola
Extreme Networks
Telect
AudioCodes
Force10 Networks
Carrier Access Corp

Transmission

Adtran
Hayes
Practical Peripherals
Telebit
UDS Universal Data Systems
Paradyne
US Robotics
Motorola
Micom
General DataComm
Codex
Multitech
Telenetics
ADC Kentrox
Zhone
ATT Dataphone
Industrial Grade Modems

Cellular

Cisco Systems
Tessco
Ericsson
Fujitsu
Gemalto
Nortel  Networks
Sabre Communications
Power Wave
Dragon Wave
Wilson Electronics

Digital Security & Management

Cisco Systems
Barracuda Networks
Sonic Wall
Packeteer
Blue Coat

Power

American Power Conversion
Exeltech Power Inverters
Tripplite