Circuit arrangement for the transmission of communication signal

Details Circuit arrangement for the transmission of communication signal Circuit arrangement for the transmission of communication signal

1987-08-14

1989-01-10

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 71, 379 2, H04J 116, H04J 314

Patent

active

047978740

ABSTRACT:
A circuit arrangement is disclosed by which one of two subscribers (T1, T2) can be connected to a subscriber line (ASL) of the public telecommunication network if a device (2) associated with both subscribers (T1, T2) experiences trouble. The two subscribers (T1, T2) are, in normal operation, both connected to the subscriber line (ASL). Transmission of the signals takes place in this case between the device (2) and an office of the telecommunication network digitally over the subscriber line (ASL). In the event of a disturbance, one subscriber (T1) can be connected by a bypass line (8) to the office with analog signal transfer.

REFERENCES:
patent: 4197435 (1980-04-01), Jackson et al.
patent: 4451708 (1984-05-01), Kemler et al.
patent: 4462058 (1984-07-01), Ziegler
patent: 4575584 (1986-03-01), Smith et al.

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