| Business | Phone |
| Artesyn Communication Products 11440 W Bernardo Ct # 300, San Diego 92127 | (858) 674-6664 |
| Calcom International Inc 10030 Via De La Amistad, San Diego 92154 | (619) 661-6575 |
| Concisys Inc 4205 Ponderosa Ave, San Diego 92123 | (858) 292-5888 |
| Emc Corp 9573 Chesapeake Dr # 200, San Diego 92123 | (858) 576-1880 |
| Logicon Fourth Generation Tech 404 Camino Del Rio S # 500, San Diego 92108 | (619) 610-8800 |
| Alpha Enterprises Intl 4878 Ronson Ct # C, San Diego 92111 | (858) 576-0435 |
| Mentor Graphics Corp 11232 El Camino Real # 200, San Diego 92130 | (760) 929-8880 |