System for controlling network activation sequence

Details System for controlling network activation sequence System for controlling network activation sequence

1987-08-14

1988-06-28

Masinick, Michael A.

Communications: electrical

Continuously variable indicating

With meter reading

34082514, 375 8, 375 13, H04L 708, H04L 710, H03H 730

Patent

active

047542730

ABSTRACT:
A digital subscriber line formed by terminal equipment, a network control device including a plurality of the terminal equipment, and an exchange terminal. In a waiting state of the digital subscriber line, the network control derive is placed in a state which can only receive a signal. A sending portion of the network control device is driven when, at a call from the terminal equipment, the terminal control device receives a line activation signal from the exchange equipment and when, at an incoming state from the state from the exchange terminal, the terminal control device receives a line activation from the exchange equipment. The synchronization pattern signal is sent from the sending portion to the exchange terminal so that the synchronization of the exchange terminal is established.

REFERENCES:
patent: 3644896 (1972-02-01), Chaddha
patent: 3946315 (1976-03-01), Tustison
patent: 4044307 (1977-08-01), Borysiewicz et al.
patent: 4051326 (1977-09-01), Badagnani et al.
patent: 4232197 (1980-11-01), Acampora et al.
patent: 4387440 (1983-06-01), Eaton
patent: 4392225 (1983-07-01), Wortman
CCITT Document AP VIII-97-E, Jun., 1984, pp. 150-195.

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