| Business | Phone |
| Communications Design 112 Parkway Dr S, Hauppauge 11788 | (631) 439-6100 |
| Dmgt Communications 40 Oser Ave, Hauppauge 11788 | (631) 952-1024 |
| Peek Graphic Communication Inc 300 Motor Pkwy, Hauppauge 11788 | (631) 439-6850 |
| Phone Review 900 Wheeler Rd # 255, Hauppauge 11788 | (631) 979-2358 |
| Quantum Communications Corp 521 Route 111, Hauppauge 11788 | (631) 360-6684 |
| Teledata Communications 100 Engineers Rd, Hauppauge 11788 | (631) 342-9222 |