System for access from LAN to ISDN with means for changing betwe

Details System for access from LAN to ISDN with means for changing betwe System for access from LAN to ISDN with means for changing betwe

1993-10-04

1994-09-13

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 8513, 3701101, H04J 324

Patent

active

053475160

ABSTRACT:
In access to the ISDN from LAN, two B.sub.1 and B.sub.2 channels in the TDM signal in the ISDN are predetermined to be corresponding to the packet and the line switches in the ISDN switch. The packet data from LAN are transmitted through a virtual circuit on B.sub.1 channel through the packet switch to a called party under the call control on D channel. When the data packet from the LAN per a unit time is increased, another virtual circuit is set up on B.sub.2 channel through the line switch by a call control on D channel in response to a channel change signal. Then, the virtual circuit on B.sub.1 channel is cleared. Thus, the increased packet data is transmitted on B.sub.2 channel and through the line switch to the called party without interruption of data transmission.

REFERENCES:
patent: 5157662 (1992-10-01), Tadamura et al.
patent: 5182748 (1993-01-01), Sakata et al.
patent: 5184345 (1993-02-01), Sahni

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