| Business | Phone |
| I B & T Corp 586 N 1st St # 108, San Jose 95112 | (408) 295-4630 |
| Vitel Communications 2330 S 10th St, San Jose 95112 | (408) 288-6001 |
| Qualitek Services Inc 2215 Ringwood Ave, San Jose 95131 | (408) 597-0130 |
| R F Techniques 2245 Fortune Dr # B, San Jose 95131 | (408) 433-1941 |
| Rainbow Communications Inc 2362 Qume Dr, San Jose 95131 | (408) 577-0109 |