Systems for selecting a transmission control procedure in communications using integrated services digital networks
First Claim
1. A transmission procedure selecting process 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 signal interface for providing circuit control for signals transmitted through the interface, the communication control device including a plurality of transmission control circuits, each being connected to a data channel, a central processing unit connected to the communication control device, comprising:
- 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 transmission control circuit designated by the transmission control procedure in said 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.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
8 Claims
-
1. A transmission procedure selecting process 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 signal interface for providing circuit control for signals transmitted through the interface, the communication control device including a plurality of transmission control circuits, each being connected to a data channel, a central processing unit connected to the communication control device, comprising:
-
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 transmission control circuit designated by the transmission control procedure in said 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification