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Application filed by Kapsch AgfiledCriticalKapsch Ag
Priority to CS311989ApriorityCriticalpatent/CS276136B6/en
Publication of CS8903119A2publicationCriticalpatent/CS8903119A2/en
Publication of CS276136B6publicationCriticalpatent/CS276136B6/en
The protection unit described is intended for communications services, such as the telephone, teletext, telex, fax and so on. The connections at exchanges and the equipment at terminals have differing interfaces and between there are converters. These converters are coupled to a multiplexing line, connecting the exchanges and the terminals together, esp. in the case of an integrated services digital network (ISDN). The protection unit includes these converters and a microprocessor to facilitate the exchanges.
CS311989A1989-05-241989-05-24Terminal equipment for telephone systems ensuring various services
CS276136B6
(en)