Patent ID: 6766113
Filing Date: 2004-07-20
Classification: H04J,H04Q

Abstract:
A transmission system comprising a plurality of nodes interconnected to one another by transmission media, each of said nodes comprising;a receiver to receive a signal formed from a plurality of channel signals, a demultiplexer for separating the received signal into individual ones of the channel signals including a control channel signal containing a supervisory message, a splitter to split the control channel signal into first and second control channel signals, a controllable switch to switchably route the first control channel signal substantially immediately upon obtaining it from said splitter to an output for transmission to a next node, and a controller, responsive to the presence of the second control channel signal and responsive to the content of the supervisory message, invokes a predetermined procedure, generates a supervisory message identifying the invoked procedure, and causes the controllable switch to switchably route the generated supervisory message to said output.