| Business | Phone |
| Avaya Inc 18201 Von Karman Ave # 630, Irvine 92612 | (949) 225-5623 |
| Best Tel 1702 Mcgaw Ave # A, Irvine 92614 | (949) 553-8555 |
| Equant 1 Park Plz, Irvine 92614 | (949) 660-4160 |
| Aat Communications 16700 Aston, Irvine 92606 | (949) 417-0168 |
| Aktino Inc 19800 Macarthur Blvd, Irvine 92612 | (949) 258-0545 |
| Axis Communications 116 Marketview, Irvine 92602 | (714) 389-6788 |
| Bar Tech Telecom Inc 17165 Von Karman Ave # 107, Irvine 92614 | (949) 263-6444 |
| Business Communications Svc 17332 Von Karman Ave # 122, Irvine 92614 | (949) 861-8200 |
| Comlogix 17052 Gillette Ave, Irvine 92614 | (949) 399-9292 |
| Computcable Communications 307 Veneto, Irvine 92614 | (949) 757-1290 |
| Dmr Communications 17300 Red Hill Ave, Irvine 92614 | (949) 251-0767 |
| Inforte Corp 4 Park Plz # 700, Irvine 92614 | (949) 794-0090 |
| Mce Communications 17922 Sky Park Cir # G, Irvine 92614 | (949) 701-4580 |
| Mountain Union Telecom 17870 Sky Park Cir # 270, Irvine 92614 | (949) 474-2087 |
| Ots Business Solutions 17332 Von Karman Ave, Irvine 92614 | (949) 474-5522 |
| Synergy Communications Irvine 92614 | (949) 250-5894 |
| Us Telecom Long Distanc 17832 Gillette Ave, Irvine 92614 | (949) 222-1071 |
| Validicom Telecom & Data Irvine 92614 | (951) 277-2222 |
| Verizon 32 Executive Park # 150, Irvine 92614 | (949) 253-8100 |