Enterprise Manufacturers

Aasta
ACS
Adtran
Alcatel
Aslec
AT&T
Avaya
Best Power
Bogan
Comdial
Conklin
Cortelco
Datacom
DBA
DCS
Dees
Dukane
Edwards
Elgin Electronics
Emerson
Executone
Fujitsu
Gai-Tronics
GN Netcom
GTE
Harris
Hitachi
ITT
Lenkurt
Lucent
Lynch
Marconi
Med-Pat
Melco
Mitel
NEC
Newbridge
Nortel
Northcom
Oneac
Pairgon
Panasonic
Para Systems
Plantronics
Polycom
Premier
Protel
Pulsecom
Quadrum
Rolm
Samsung/Prostar
Seiscor
Siemens
Southwestern Bell
Suttle Apparatus
Telco Systems
Telect
Teledex
Telehorn
Tellabs
Telrad
Teltone
Teltrent
Thomas Industries
Thomson
Tie-Nitsuko
Tone Commander
Toshiba
Uniden
Valcom
Vertical
Vidar
Viking Electronics
Vodavi
VTech
Walker
Wescom
Westell
Western Electric
Wheelock
Xel