| Business | Phone |
| X 5 Solutions 10300 Sw Greenburg Rd, Portland 97223 | (503) 244-3373 |
| Smith Telecommunications 8375 Sw Beaverton Hillsdale, Portland 97225 | (503) 203-2917 |
| Usha Communications Tech 111 Sw 5th Ave # 1700, Portland 97204 | (503) 274-8777 |
| American Tower Corp 4504 Sw Carl Pl, Portland 97239 | (503) 248-9816 |
| Trt Telecommunications 5950 Ne 6th Ave, Portland 97211 | (503) 226-6582 |
| Telecom Computer 2222 Nw Lovejoy St, Portland 97210 | (503) 227-1788 |
| Realcom Associates 506 Sw 6th Ave # 900, Portland 97204 | (503) 241-0279 |
| Qwest Communications 421 Sw Oak St # 1, Portland 97204 | (503) 464-1590 |
| Douglas Telecom 707 Sw Washington St, Portland 97205 | (503) 221-9778 |
| Equant 1300 Sw 5th Ave # 18, Portland 97201 | (503) 471-2830 |
| Pacific Telecom Svc Llc 107 Se Washington St, Portland 97214 | (503) 232-8219 |
| Ontus Advanage 121 Sw Salmon St # 1020, Portland 97204 | (503) 445-4008 |
| Lightpoint Communications Inc 309 Sw 6th Ave, Portland 97204 | (503) 224-6120 |