| Business | Phone |
| Altisys Communications Inc 1289 Reamwood Ave, Sunnyvale 94089 | (408) 752-0800 |
| American Multiplexer Corp 575 N Pastoria Ave, Sunnyvale 94085 | (408) 730-8200 |
| I P Dialog Inc 542 Lakeside Dr, Sunnyvale 94085 | (408) 830-0800 |
| Vertical Networks 1148 E Arques Ave, Sunnyvale 94085 | (408) 523-9700 |