| Business | Phone |
| Telcordia Technologies Inc 1 Telcordia Dr, Piscataway 8854 | (732) 699-2000 |
| A T & T 20 Knightsbridge Rd, Piscataway 8854 | (732) 457-1000 |
| A T & T 330 S Randolphville Rd, Piscataway 8854 | (732) 562-2000 |
| Hyperion Communications 225 Old New Brunswick Rd # 104, Piscataway 8854 | (732) 981-0656 |
| Mci 201 Centennial Ave, Piscataway 8854 | (732) 885-4000 |