| Business | Phone |
| Ceco Po Box 427, Escondido 92033 | (760) 741-2953 |
| Repair Telecom 1637 E Valley Pkwy # 256, Escondido 92027 | (760) 745-3728 |
| J T Specialty Systems Inc 10136 Rancho Roble Rd, Escondido 92026 | (760) 751-4083 |
| Konna Communications 1740 Seven Oakes Rd # 117, Escondido 92026 | (760) 746-8582 |