| Business | Phone |
| Telephony Technical 6807 Ne 79th Ct, Portland 97218 | (503) 251-6928 |
| Skyline Telephone Systems 1130 Nw 12th Ave, Portland 97209 | (503) 525-2332 |
| Richard Smith Computer Techs 300 Ne Multnomah St # 5, Portland 97232 | (503) 239-7880 |
| G G Telecommunication Co 121 Sw Salmon St # P-1, Portland 97204 | (503) 295-2922 |
| Hatfield Communications Llc Po Box 83825, Portland 97283 | (503) 978-8888 |