| Business | Phone |
| Alcatel Network Systems 720 S Milpitas Blvd, Milpitas 95035 | (408) 945-2200 |
| Aster Telesolutions Inc 1613 S Main St # 104, Milpitas 95035 | (510) 790-9006 |
| Bay Telephone Svc Inc 879 Ames Ave, Milpitas 95035 | (408) 942-4848 |
| Blue7 Communications 1900 Mccarthy Blvd # 205, Milpitas 95035 | (408) 383-0200 |
| Caydan 188 Greentree Way, Milpitas 95035 | (408) 262-8600 |
| Teledesign Systems 1729 S Main St, Milpitas 95035 | (408) 941-1808 |