Monitoring system capable of monitoring a sequence of digital si

Details Monitoring system capable of monitoring a sequence of digital si Monitoring system capable of monitoring a sequence of digital si

1987-05-19

1989-05-30

Paschall, M. H.

Multiplex communications

Wide area network

Packet switching

370 131, 370 66, H04Q 1104

Patent

active

048357669

ABSTRACT:
For use in combination with an exchange which is coupled to a subscriber line used in transmitting a sequence of digital signals and comprises a time division switch unit coupled to the subscriber line and a control unit for controlling the time division switch unit to form an internal transmission path in the time division switch unit in response to the digital signals, a monitoring system comprises a command supply circuit for supplying a command to the control unit to form a monitoring path related to the internal transmission path in the time division switch unit. A coupling circuit couples to the subscriber line to a monitoring equipment through the monitoring path when the command is supplied from the command supply circuit to the control unit. The digital signal sequence is monitored by the monitoring equipment.

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patent: 4611320 (1986-09-01), Southard
patent: 4653043 (1987-03-01), Brady et al.
patent: 4695997 (1987-09-01), Montanari et al.

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