3Com
Aastra
AIPHONE
Alcatel
Allworx
AltiGen
AT&T
Avaya
BBS PLEXUS
Brother
Cisco
Comdial
Cortelco
CQ Simple
Crexendo
Dukane
eOn
Ericsson
ESI
Executone
Fanstel
Fanvil
Fujitsu
GE
Grandstream
Hitachi
ICON Voice Networks
Inter-Tel
IPitomy
Iwatsu
Key System US
LG-Ericsson
MacroVoice
Mitel
MOCET
NEC
Nitsuko
Nortel
Panasonic DBS
Panasonic KX-T
Picazo/Dash
Polycom
Positron
Premier
Rauland-Borg
Samsung
SBC
Scitec
Siemens/Rolm
snom VoIP
Sprint
Tadiran
Telecor
Teledex
TeleMatrix
Telrad
Teltronics
TMC
Tone Commander
Toshiba
Transtel
Unify
Vertical Communications
Vodavi
WIN
Wildix
XBLUE
Yealink
Xorcom
Zultys
