| Business | Phone |
| Black Box Network Svc 2104 Babcock Blvd, Pittsburgh 15209 | (412) 821-5150 |
| Inter Networking Products 300 Mount Lebanon Blvd, Pittsburgh 15234 | (412) 561-8890 |
| Network Access Corp 7805 Mcknight Rd # 206, Pittsburgh 15237 | (412) 369-9790 |
| Xyquad 4525 Mcknight Rd, Pittsburgh 15237 | (412) 931-4477 |