Digital subscriber line circuit for connecting an ISDN subscribe

Details Digital subscriber line circuit for connecting an ISDN subscribe Digital subscriber line circuit for connecting an ISDN subscribe

1992-06-09

1994-03-22

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, 370 851, 3701053, 375106, 375108, 375118, H04J 306

Patent

active

052971457

ABSTRACT:
A digital subscriber line circuit for connecting an ISDN subscriber to the trunk side of a digital exchange which comprises an SLD interface operating according to the SLD system. The subscriber line circuit further includes a transfer arrangement for transferring, during a transfer time window, data signals between incoming and outgoing time slots of the SL line of the SLD interface and time slots assigned thereto of outgoing or incoming trunks of the digital exchange. The subscriber line circuit comprises a slip detection means for detecting an incoming or outgoing trunk time slot slipping out of the transfer time window. The slip detection means controls a slip correction means which controls the transfer arrangement in response to the detection of a slip, so that data are skipped in one transfer direction and data are repeated in the other transfer direction.

REFERENCES:
patent: 4833675 (1989-05-01), Hekimian et al.
patent: 4839893 (1989-06-01), Smith
patent: 4860285 (1989-08-01), Miller et al.
patent: 4965794 (1990-10-01), Smith

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