Patent attributes
The commercial demand for higher aggregate data rates has led to DWDM (Dense Wavelength Division Multiplexed) transmissions. Network elements need the capacity in these systems to reconfigure in case of a bit stream failure. The instant invention can bridge communications between other network elements including optical and electrical signal network elements, when a loss of signal detection circuit to substitute a second bit stream for a time delayed original bit stream and a circuit element connected to the loss of signal detection circuit to permit the network elements to reconfigure without activating automatic protect switch mechanisms of a bridged network. The instant invention also teaches a method for ensuring communication of network elements of a bridged network including optical and electrical signal network elements, by detecting a loss of signal in a transmitted bit stream; substituting a second bit stream for a time delayed original bit stream; and allowing network elements to crossconnect to reconfigure optical channels in a manner that will not interfere with network functions.
