| Business | Phone |
| Acces I-O Products 10623 Roselle St, San Diego 92121 | (858) 550-9559 |
| Cognitronics Image Systems Inc 4636 Mission Gorge Pl # 203, San Diego 92120 | (619) 265-3434 |
| Paralan Corp 4655 Ruffner St # 220, San Diego 92111 | (858) 560-7266 |
| Zhone Technologies Inc 9940 Mesa Rim Rd, San Diego 92121 | (858) 597-8700 |