| Business | Phone |
| American Business Telephone 24331 Muirlands Blvd # 4-306, Lake Forest 92630 | (949) 770-1225 |
| Dbe Datacom 20702 El Toro Rd # 237, Lake Forest 92630 | (949) 859-2007 |
| Lake Forest Starcom Lake Forest 92630 | (949) 587-1478 |
| Synergy Information Systems 23622 Rockfield Blvd, Lake Forest 92630 | (949) 462-9030 |
| Telecommunications & Data Svc 20991 Sharmila, Lake Forest 92630 | (949) 206-1002 |