-
- Ascend
- AT&T Paradyne
- Bay Networks
- Codex/Motorola
- CrossComm/Olicom
- CXR/AJ
- DCB of Champaign
- DEC
- D-Link
- Fastcomm
- Gandalf
- General DataComm
- Livingston
- Microcom
- Motorola/ISG
- Multitech
- Ossicom/Cray
- Patton Electronics
-
VoIP
- Practical
- rometheous
- Racal
- Telebit
- Teleglobe
- UDS/Motorola
- US Robotics
- Xircom
- Zoom