Method and apparatus for the enlargement of the reach of the transmission channel between functional groups of an ISDN-user interface
AssigneeDTM Data TeleMark GmbH
InventorsKlaus Helbig, Roland Geissler, Norbert Wulst
Life of this patent
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Abstract
One, or more, ISDN interfaces have their reach extended without violating ISDN interface standards by a method which converts ISDN coded information which is to be delivered over an extended channel into binary coded data prior to transmission, transmitting the binary coded information to a receiver at an extended location and there, after storage, and assembly, converting the binary coded data into ISDN specific coded data for delivery to an ISDN interface.
Claims20
Process for the enlargement of the reach of the transmission channel between functional units of the ISDN user interface within an ISDN network
- with one or more similar interfaces,
- in which information is exchanged between a netside user interface and a terminal side user interface
- and where the netside user interface and the terminal side user interface both have a transmitting side and a receiving side
- wherein the information has an ISDN-specific structure and is coded in an ISDN specific, non-binary, code
- and wherein an ISDN protocol fixes a certain time interval within which the connection between two users is not established with the absence of a signal in that time interval characterized by
- i) accumulating on a transmitting side the information in a memory after conversion of the ISDN specific coded information to binary coding,
- ii) transmitting the accumulated information over a transmission channel to a receiving side in a binary coded form, and
- iii) receiving the transmitted accumulated information at the receiving side, then storing the information in a memory from which the binary coded information is coded back to an ISDN specific code whereby the information is delivered to the user interface without violation of the time interval.
Apparatus for the enlargement of the reach of the transmission channel between functional units of the ISDN user interface within an ISDN network
- with one or more similar interfaces,
- in which the information is exchanged between a netside user interface and a terminal side user interface
- and where the netside user interface and the terminal side user interface both have a transmitting side and a receiving side
- wherein the information has an ISDN-specific structure and is coded in an ISDN specific, non-binary code
- and wherein an ISDN protocol fixes a certain time interval within which the connection between two users is not established with the absence of a signal in that time interval characterized by:
- i) means for accumulating the information, on a transmitting side, in a memory after conversion of the ISDN specific coded information to binary coding,
- ii) means for transmitting the accumulated information over a transmission channel in binary coded form to a receiving side, and
- iii) means for receiving the transmitted information accumulated at the receiving side, and storing the transmitted information in a memory from which the information is coded back to ISDN specific coded data thereby allowing delivery of the information to the user interface without violation of the time interval.
Dependencies are inferred from the claim text.