Method and arrangement for local address acquisition by a station in a communication system
First Claim
1. Method for providing a unique local identification to a station when it is connected to a transmission medium via a connecting port, characterized bysending a signal pattern from said station to said port;
- sending an identification demand indication from said station to said port; and
sending from said port, in response to said demand indication and under control of said signal pattern, an identification stored at said connecting port and storing said identification in the respective station.
1 Assignment
0 Petitions
Accused Products
Abstract
In a local communication network, stations can be attached via extension lines and individual ports in distribution panels to the main transmission ring (11). Each port has a physical address or local identification key. Means are provided for inserting the local key of a port into a station when it is plugged into the extension lines. Each station comprises units (33, 45) for generating a key demand signal and an idling signal pattern which are transmitted to the port, and a key register (47) for recording the key when it is received. Each port includes a read-only store and timing unit (41) which furnishes the local key in response to the received idling pattern which is converted to a clock signal. A switch (37) in the port is activated by a switch control unit (35) to insert the read-only store and timing unit into a wrap-around loop interconnecting input and output paths of the station.
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Citations
10 Claims
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1. Method for providing a unique local identification to a station when it is connected to a transmission medium via a connecting port, characterized by
sending a signal pattern from said station to said port; -
sending an identification demand indication from said station to said port; and sending from said port, in response to said demand indication and under control of said signal pattern, an identification stored at said connecting port and storing said identification in the respective station. - View Dependent Claims (2, 3)
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4. Arrangement for loading a local identification key into a station when it is connected to a transmission network by a connecting port, characterized in that it comprises
in said station (FIG. 4, FIG. 5): -
means (45, 85, 86,
87) for transmitting an idling signal pattern,means (81, 82, 129, 131, 135,
137) for generating a key demand indication signal, andmeans (47, 101, 103,
105) for storing a local identification key when it is received from said connecting port;in said connecting port (FIG.
3);means (51) for storing a local identification key for the respective port, means (39, 55,
57) for deriving a timing signal from an idling signal pattern received from a station being connected, andmeans (43,
53) for reading the local identification key from said storing means under control of said timing signal and for transmitting it to said station when said demand indication signal is received. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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Specification