Line switching apparatus
AssigneeRicoh Company, Ltd.
InventorChuzo Nashimoto
Life of this patent
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Abstract
A line switching apparatus is adapted for use with a communication apparatus which comprises a plurality of lines which are accommodated according to a key number system, a plurality of ports which aer connected to communication terminals, and a matrix switch which couples the lines and the ports. The line switching apparatus comprises an auxiliary apparatus, and a control part for detecting an arbitrary one of the ports which is down and not capable of making a communication, disconnecting the arbitrary port from one of the lines and connecting the one line which is originally connected to the arbitrary port to a port which is originally connected to a line of a last key number, and connecting the line of the last key number to the auxiliary apparatus.
Claims9
A line switching apparatus adapted for use with a communication apparatus which comprises a plurality of lines which are accommodated according to a key number system, a plurality of ports which are connected via line inputs of communication terminals to said communication terminals, said communication terminals also having control inputs, and a matrix switch which couples the lines and the ports, said line switching apparatus comprising:
- an auxiliary apparatus;
- and
- control means including first means for detecting via the control inputs of said communication terminals an arbitrary one of the ports which is down and not capable of making a communication, second means for disconnecting the arbitrary port from one of the lines and connecting the one line which is originally connected tot he arbitrary port to a port which is originally connected to a line of a last key number, and third means for connecting the line of the last key number to said auxiliary apparatus.
Dependencies are inferred from the claim text.