Systems for selecting a transmission control procedure in commun

Details Systems for selecting a transmission control procedure in commun Systems for selecting a transmission control procedure in commun

1989-12-12

1991-01-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, H04J 314

Patent

active

049858874

ABSTRACT:
A transmission procedure selecting system in a data communication network system which includes a plurality of terminals, an ISDN switching network which exchanges a plurality of circuit lines with the plurality of terminals, a communication control device connected with the ISDN switching network via a multiplexed interface for providing transmission control for data transmitted through the interface, the communication control device including a plurality of transmission control circuits connected with respective data channels in the multiplexed interface, and a central processing unit connected to the communication control device. The process comprises a step that prior to transmission of data from a terminal to the central processing unit, said terminal transmits a call setup signal which designates the transmission control procedure adaptive to said terminal via a control channel of the multiplexed interface; a step that the central processing unit selects a transmission control circuit designated by the transmission control procedure in the call setup signal received via the control channel; and a step that the central processing unit transmits to the ISDN switching network via the control channel of the multiplexed interface a request for connection of the terminal and the data channel connected to the selected transmission control circuit.

REFERENCES:
patent: 4700340 (1987-10-01), Beranek et al.
patent: 4736364 (1988-04-01), Basso et al.
patent: 4908824 (1990-03-01), Leibe et al.
patent: 4922486 (1990-05-01), Lidinsky et al.

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