| Business | Phone |
| Accessline Communication Corp 1215 Borregas Ave, Sunnyvale 94089 | (408) 747-5540 |
| Chelsio Communications 370 San Aleso Ave, Sunnyvale 94085 | (408) 962-3600 |
| Phoenix Fiberlink Inc 525 Almanor Ave, Sunnyvale 94085 | (408) 524-2300 |
| S K Communications Inc 1185 Bordeaux Dr, Sunnyvale 94089 | (408) 752-9966 |
| Spirent Communications 1325 Borregas Ave, Sunnyvale 94089 | (408) 752-7100 |