H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/29
H04Q 3/54 (2006.01) H04Q 3/545 (2006.01)
Patent
CA 1205890
ABSTRACT OF THE DISCLOSURE An arrangement is provided for loading service information into the operational memories of the line modules of a telecommunications exchange. The line modules have lines for communicating with terminals and possibly external apparatus, and have a control computer for maintaining communication between terminals or between a terminal and external apparatus. The communication between terminals connected to different modules is set up via a digital group selector. To enable writing from an information source to all the module control computers from a single module selected as a main unit, the data information to be written is preceded by conditioning information. This actuates a connection means for establishing a connection to an addressed module with the aid of a start-up program stored in a start-up memory in the module. A decoder in each module is set up on the basis of the conditioning information to accept a designator number assigned for that module when service information is subsequently transmitted to all the modules. Each module can only accept the service information accepted by its decoder. A terminal signal in the data information disconnects all the modules connected to the common communication path.
417651
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
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