| Business | Phone |
| All Points Training Inc Pittsburgh 15216 | (412) 343-4454 |
| Desktop Videoconferencing Syst 1800 Preble Ave, Pittsburgh 15233 | (412) 323-9711 |
| Netspoke Inc 5001 Centre Ave, Pittsburgh 15213 | (412) 605-1500 |
| Pittsburgh Video Tech Center 11 Stanwix St, Pittsburgh 15222 | (412) 565-3471 |
| Proliance Solutions 436 Seventh Ave., Pittsburgh 15219 | (412) 261-5588 |