| Business | Phone |
| Dsn Communications 2380 Alta Vista Dr, Vista 92084 | (760) 631-6350 |
| Advanced Network Solutions Vista 92081 | (760) 518-9004 |
| Communication Solutions 1280 Peach Grove Ln, Vista 92084 | (760) 726-8707 |
| M C Communications Vista 92081 | (760) 295-4645 |
| Jls Telecom Inc 2040 Hawley Dr, Vista 92084 | (760) 724-7833 |