Method to solve the multi-path and to implement the roaming function
First Claim
1. A business telecommunication system capable of connecting wireless mobile stations and wired stations located at a plant, the system comprising:
- a base station to which said wireless mobile stations are connected, said base station being installed at said plant, a private branch exchange to which said wired stations are connected, said private branch exchange being installed at said plant, at least two dedicated lines, at least one line of said at least two dedicated lines connecting said base station with a public switched telephone network, another at least one line of said at least two dedicated lines connecting said public switched telephone network with said private branch exchange, a plurality of antennas associated with said base station to connect said wireless mobile stations to said base station, and whereby a multipath can be eliminated, and reliable communication can be attained in circumstances of shielded areas at the plant.
2 Assignments
0 Petitions
Accused Products
Abstract
A telecommunication system intended for providing telecommunication services at a semiconductor manufacturing plant under the circumstances of shielded areas of clean rooms comprises a GSM base station installed at the plant and equipped with a plurality of low power antennas, a private branch exchange and at least two dedicated lines of E1 type connecting the base station and the PBX to a public switched telephone network. Software incorporated in the base station and PBX allows for telecommunication connections set up at the plant to use abbreviated four-digit numbers for both wireless mobile stations and wired stations, while keeping the possibility to reach a mobile station, even if it is outside the plant at the time of the connection, dialing the abbreviated four-digit number.
18 Citations
20 Claims
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1. A business telecommunication system capable of connecting wireless mobile stations and wired stations located at a plant, the system comprising:
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a base station to which said wireless mobile stations are connected, said base station being installed at said plant, a private branch exchange to which said wired stations are connected, said private branch exchange being installed at said plant, at least two dedicated lines, at least one line of said at least two dedicated lines connecting said base station with a public switched telephone network, another at least one line of said at least two dedicated lines connecting said public switched telephone network with said private branch exchange, a plurality of antennas associated with said base station to connect said wireless mobile stations to said base station, and whereby a multipath can be eliminated, and reliable communication can be attained in circumstances of shielded areas at the plant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A telecommunication system capable of connecting wireless mobile stations and wired stations located at a semiconductor manufacturing plant under the circumstances of shielded areas of clean rooms, the system comprising:
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a base station to which said wireless mobile stations are connected, said base station being installed at said plant, a private branch exchange to which said wired stations are connected, said private branch exchange being installed at said plant, at least two dedicated lines, at least one line of said at least two dedicated lines connecting said base station with a public switched telephone network, another at least one line of said at least two dedicated lines connecting said public switched telephone network with said private branch exchange, a plurality of antennas associated with said base station to connect said wireless mobile stations to said base station, software means for creating a unique full network number for any of said wireless mobile and wired stations, whereby a multipath can be eliminated, and reliable communication can be attained in circumstances of shielded areas at the plant, and whereby a connection between said wireless mobile stations and between one of said wireless mobile station and one of said wired stations, no matter whether said wireless mobile stations are at the plant at the moment of establishing the connection, can be set up by using their abbreviated intraplant numbers. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A telecommunication system capable of connecting wireless mobile stations and wired stations located at a semiconductor manufacturing plant under the circumstances of shielded areas of clean rooms, the system comprising:
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a base station to which said wireless mobile stations are connected, said base station being installed at said plant, a private branch exchange to which said wired stations are connected, said private branch exchange being installed at said plant, at least two dedicated lines, at least one line of said at least two dedicated lines connecting said base station with a public switched telephone network, another at least one line of said at least two dedicated lines connecting said public switched telephone network with said private branch exchange, a plurality of low power antennas associated with said base station to connect said wireless mobile stations to said base station, software means for creating a unique full network number for any of said wireless mobile and wired stations, whereby a multipath can be eliminated, and reliable communication can be attained in circumstances of shielded areas at the plant, and whereby a connection between said wireless mobile stations and between one of said wireless mobile station and one of said wired stations, no matter whether said wireless mobile stations are at the plant at the moment of establishing the connection, can be set up by using their abbreviated intraplant numbers. - View Dependent Claims (17, 18, 19, 20)
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Specification