H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/10.1
H04J 3/14 (2006.01)
Patent
CA 1241776
ABSTRACT In a data communication system, a device for performing a wrap test on at least one line without affecting the other lines that transmit and receive data over at least one multiplex link within time slots allocated to a given line within a given frame. During each time slot, a wrap control bit is set by the communication system to a state that indicates either the wrap test mode or the normal mode of operations. Said bit controls a logic circuit to cause data to be sent either over link or to the receive circuit to perform the test, within each time slot.
479573
Baudelot Francis E.
Costes Michel L.
Montanari Gerard M.
Barrett B.p.
International Business Machines Corporation
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