| Business | Phone |
| A & M Sales & Marketing 3045 W Liberty Ave # 5a, Pittsburgh 15216 | (412) 561-1948 |
| Cbd Svc 1303 Kenzie Dr, Pittsburgh 15205 | (412) 787-7550 |
| Communications Solutions Inc 221 Keifer Dr, Pittsburgh 15241 | (412) 851-9152 |
| Mc Kinley Group Ltd 1901 Penn Ave, Pittsburgh 15222 | (412) 765-2121 |
| Murphy Telecom & Video Inc 1229 Blue Jay Dr, Pittsburgh 15243 | (412) 276-5565 |
| Northeast Networking Systems 3248 Old Frankstown Rd, Pittsburgh 15239 | (412) 793-0647 |
| Sextant Group 730 River Ave, Pittsburgh 15212 | (412) 323-8580 |
| Teltec Associates 301 Maxwell Dr, Pittsburgh 15236 | (412) 882-4361 |
| Total Telecom Solution 463 Marlin Dr, Pittsburgh 15228 | (412) 341-8250 |
| Williams Communications Liberty Ave & 28th Stamp;, Pittsburgh 15222 | (412) 281-8386 |
| Williams Telecommunications 2800 Liberty Ave, Pittsburgh 15222 | (412) 261-9327 |