H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/25
H04Q 11/04 (2006.01)
Patent
CA 1117204
ABSTRACT OF THE DISCLOSURE An integrated switching and transmission network comprises a digital switching system for transfering communication information without congestion. The switching consists of one-way switch modules which are connected through two-way time division multiplex transmission links to link modules each including a control unit for establishing communication paths within an associated line group as well as for controlling the switch in cooperation with the control units of other line groups. Each of the switch modules is allotted to two of the two-way links and comprises a time stage and a signalling logic circuit. The input of each module is connected exclusively to one way of one of the two-way links, whereas the output of each module is connected to the other way of the other two-way link. For the reliable control of the network, transmitting control units generate signals. Each signal addresses one of the signalling logic circuits, which converts the signal to an operation signal by which the associated time stage is operated or to a signal intended for the receiving control unit. Furthermore, control messages are transferred between the control units through the time stages. The time stages carry out the required time inter changes for the transfer of said control messages and communication information between the line groups.
310754
Lovdin Arne L.
Persson Mats A.
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
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