| AFFORDABLE PORTABLES | 1835 NEWPORT BLVD COSTA MESA, CA | (949) 650-1100 |
| AMERICAN VOICE BOX | 3020 PULLMAN ST COSTA MESA, CA | (714) 972-1000 |
| BLUE VIOLET NETWORKS | 2755 BRISTOL ST COSTA MESA, CA | (714) 754-4000 |
| CELLUTRAC INC | 3545 CADILLAC AVE COSTA MESA, CA | (714) 546-5380 |
| COAST TO COAST WIRELESS | 2633 HARBOR BLVD COSTA MESA, CA | (714) 429-9800 |
| COMMWORLD COASTAL | 2850 MESA VERDE DR E COSTA MESA, CA | (714) 641-0100 |
| FOR PHONES | 1794 NEW HAMPSHIRE DR COSTA MESA, CA | (714) 435-1088 |
| ITEC NORTH AMERICA | 3001 RED HILL AVE COSTA MESA, CA | (714) 241-9502 |
| MC MAHON TELECOMMUNICATIONS INC | 3001 RED HILL AVE COSTA MESA, CA | (562) 594-5001 |
| MITEL COMMUNICATIONS SOLUTIONS | 3200 BRISTOL ST COSTA MESA, CA | (714) 431-3000 |
| ORANGE COUNTY CAR PHONE & PAGING | 2981 BRISTOL ST COSTA MESA, CA | (714) 957-5777 |
| PHONEBY | 2755 BRISTOL ST COSTA MESA, CA | (714) 754-4000 |
| SHONAN WIRELESS | 665 PAULARINO AVE COSTA MESA, CA | (714) 825-0644 |
| TELESOURCE | 1055 EL CAMINO DR COSTA MESA, CA | (714) 546-6597 |
| VMBC MARKETEK CONSULTING | 3187 AIRWAY AVE COSTA MESA, CA | (714) 437-0600 |
| VOICEMAIL BRAODCASTING | 3187 AIRWAY AVE COSTA MESA, CA | (949) 440-9700 |