| ABC (Disney) | GATX | SBC |
| Apple Computer | Hewlett Packard | Schema, LTD |
| Aptegrity | Hong Kong Telecommunications | Siemens |
| AT&T | IBM | SNET |
| Austel (Australia) | IBM Lotus | Sprint |
| Belgacom | IPC | Telcordia (Bellcore) |
| Bell Atlantic | L-3 Communications | Telecom New Zealand |
| Bell Canada | Motorola | Telefonica De Espana, Argentina, Peru |
| Bell South | Lockheed Martin | Telefonica De Mexico |
| Boeing | Nextone Communications | Telenor |
| Ca, Inc. | Nortel | Telstra |
| Chase Manhattan | Northrop Grumman | Thermo Electron |
| Compaq Computer | Optus Communications - Aus. | US West |
| Comverse | Raytheon | Verizon |
| Deutsche Telkom | Rockwell | |
| Disney | RR Donnelley |