- A T & T Local Svc
- A T & T Local Svc
- Global Deregulated Svc
- Global Deregulated Svc
- MCI
- MCI
- Qwest Communications
- Signature Communication
- Signature Communication
- Teleport Communications Group
- Teleport Communications Group
- Winstar Telecommunications
- Winstar Telecommunications
- X O Communications Inc
- X O Communications Inc
