| Business | Phone |
| Commrep 155 E Campbell Ave # 212, Campbell 95008 | (408) 370-7330 |
| Mrv Communication 152 Redding Rd, Campbell 95008 | (408) 369-1196 |
| Nevtec 871 E Hamilton Ave, Campbell 95008 | (408) 559-0638 |
| Redline Networks Inc 655 Campbell Technology Pkwy, Campbell 95008 | (408) 879-0718 |