Method and apparatus for providing continuous voice and call...

Method and apparatus for providing network protection at...

Method and apparatus for providing redundant protocol...

Method and apparatus for providing redundant protocol...

Method and apparatus for providing virtual facility...

Method and apparatus for provisioning a hop limited...

Method and apparatus for recovering from a signalling...

Method and apparatus for recovering from a signalling...

Method and apparatus for recovery from faults in a loop network

Method and apparatus for recovery from faults in a loop network

Method and apparatus for reducing EMI emissions

Method and apparatus for reliable communications in a packet...

Method and apparatus for reliably communicating information...

Method and apparatus for replacing lost PSTN data in a...

Method and apparatus for rerouting an optical network upon...

Method and apparatus for rerouting telecommunications signals

Method and apparatus for reselection of data trunk upon...

Method and apparatus for restoring a network

Method and apparatus for restoring a network

Method and apparatus for restoring a network