| Business | Phone |
| Bell Telecommunications Po Box 31186, Phoenix 85046 | (602) 996-1747 |
| Cache Valley Electric Co 4020 N 16th St, Phoenix 85016 | (602) 426-1961 |
| Icf Commuinication Systems 2810 S 24th St # 111, Phoenix 85034 | (602) 286-0555 |
| M & M Systems 3632 W Thomas Rd # 1, Phoenix 85019 | (602) 258-5775 |
| Focus Communications 3215 S 7th St # 16, Phoenix 85040 | (602) 305-8880 |
| Ken Wier Telecom 4133 W Charter Oak Rd, Phoenix 85029 | (602) 573-3535 |
| Speer Communications 2226 N 48th Dr, Phoenix 85035 | (602) 353-0010 |