Channel status checking and switching system

Claim 1

A CHANNEL STATUS CHECKING AND SWITCHING SYSTEM FOR INTERCONNECTING SELECTED PAIRS OF M FIRST CHANNELS AND N SECOND CHANNELS COMPRISING A TWO DIMENSIONAL SWITCH MATRIX INCLUDING MXN NORMALLY OPEN INDIVIDUAL SWITCHES, SAID FIRST CHANNELS BEING CONNECTED TO THE M DIMENSION OF SAID MATRIX AND SAID SECOND CHANNELS BEING CONNECTED TO THE N DIMENSION OF SAID MATRIX, A PLURALITY OF BISTABLE STORAGE DEVICES, MEANS COUPLING EACH OF SAID INDIVIDUAL SWITCHES TO CORRESPONDING ONES OF SAID BISTABLE STORAGE DEVICES, MEANS FOR SELECTIVELY PLACING EACH OF SAID STORAGE DEVICES IN A SET CONDITION TO CLOSE AN INDIVIDUAL SWITCH COUPLED THERETO AND INTERCONECT A PAIR OF FIRST AND SECOND CHANNELS, REGISTER MEANS FOR HOLDING THE ADDRESSES OF A SELECTED FIRST AND A SELECTED SECOND CHANNEL TO BE INTERCONNECTED, COINCIDENCE MEANS RESPONSIVE TO SAID REGISTER MEANS AND TO SAID STORAGE DEVICES TO PRODUCE AN OUTPUT SIGNAL WHEN EITHER OF SAID SELECTED FIRST AND SECOND CHANNELS IS CONNECTED TO A CLOSED SWITCH, GATE MEANS CONNECTED TO THE OUTPUT OF SAID COINCIDENCE MEANS, AND MEANS TO SAMPLE SEQUENTIALLY SAID GATE MEANS TO PROVIDE INDIVIDUAL FIRST CHANNEL AND SECOND CHANNEL BUSY SIGNALS.