Method and apparatus for locating and isolating a fault...
Method and apparatus for managing faults in a ring network
Method and apparatus for multiplex transmission
Method and apparatus for multiplex transmission
Method and apparatus for multiplex transmission
Method and apparatus for protection of an optical network
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 signalling in a shared protection...
Method and apparatus for topology database...
Method and apparatus for transmitting the control signal of...
Method and apparatus for variable rate pipes
Method and system for data transmission in a ring network
Method and system for determining optimized SONET rings
Method and system for manifesting alarms in a...
Method and system for processing telecommunication signals
Method and system for protecting frame relay traffic over...
Method and system for test head testing of connections of a...
Method for accommodating signal paths to ring network
Method for alternate circuiting of transmission equipment in...