| 6807190 |
Survivable distribution of broadcast signals in loopback rings |
— |
2004-10-19 |
| 6366556 |
Self-healing networks using virtual rings |
James E. Ballintine, Mark A. Bordogna |
2002-04-02 |
| 6246667 |
Backwards-compatible failure restoration in bidirectional multiplex section-switched ring transmission systems |
James E. Ballintine, Bruce L. Nelson, Kamal K. Raychaudhuri |
2001-06-12 |
| 5742774 |
Multi-ring SONET architecture having shared gateways daisy chained to complete the main and subsidiary ring controlled by a common master controller |
Daniel Al-Salameh, Nicholas Paul DeVito, Philip M. Francisco, Steven H. Hersey |
1998-04-21 |
| 5442620 |
Apparatus and method for preventing communications circuit misconnections in a bidirectional line-switched ring transmission system |
— |
1995-08-15 |
| 5440540 |
Ring interworking between a bidirectional line-switched ring transmission system and another ring transmission system |
— |
1995-08-08 |
| 5406401 |
Apparatus and method for selective tributary switching in a bidirectional ring transmission system |
— |
1995-04-11 |
| 5406549 |
Ring interworking between path-switched ring transmission systems |
— |
1995-04-11 |
| 5394389 |
Ring interworking between bidirectional line-switched ring transmission systems and path-switched ring transmission systems |
— |
1995-02-28 |
| 5390164 |
Ring interworking between bidirectional line-switched ring transmission systems |
— |
1995-02-14 |
| 5278824 |
Dual hubbing in a bidirectional line-switched ring transmission system |
— |
1994-01-11 |