Wide area cordless telephone system having means for avoiding double registrations
First Claim
1. A wide area cordless telephone system covering a service area which is divided into a plurality of local areas, comprising:
- a plurality of home position portable cordless telephone provided in each one of said local areas, each of said home position cordless telephones having a corresponding line terminal in a telephone switching system and multi-channel access means for establishing a two-way radio link, transmitting a registration request through the established link upon entry of a manual command and subsequently transmitting an acknowledgement upon receipt of a response identifying a local area, said request identifying the cordless telephone which transmitted the request;
a plurality of access units provided in said one local area for establishing said radio links with said home position cordless telephones and non-home position cordless telephones belonging to another level area; and
a pre-dialing switching stage provided in said one local area for establishing a connection between said access units and line terminals of said telephone switching stage including control means connected to said access units for receiving said request and acknowledgement therethrough, transmitting a response identifying the local area of said pre-dialing switching stage through one of said access units on receiving a registration request and assigning a reserved line terminal of said telephone switching system to a non-home position cordless telephone if the same is identified by the received request, and making registration of a cordless telephone on receiving an acknowledgement identifying the same local area as identified by said transmitted response.
2 Assignments
0 Petitions
Accused Products
Abstract
A wide area cordless telephone system covers a service area which is divided into a plurality of local areas to each of which belong a plurality of home position cordless telephones having multi-channel access capability. A plurality of access units are provided in each local area to define a plurality of access zones. A pre-dialing switching stage is provided for each local area to establish a connection between the access units and line terminals of a telephone switching system. Signals sent from any cordless telephone are received by a nearby access unit and applied to the pre-dialing switching stage. Each telephone transmits a registration request upon a manual command and, on receiving a response identifying a local area, returns an acknowlegement to identify the same local area as identified by the received response. On receiving a registration request, the pre-dialing switching stage transmits a response identifying the own local area through an access unit and assigns a reserved line terminal of the telephone switching system to a non-home position telephone if it is identified by the received request. On receiving an acknowledgement, the switching stage makes a registration of a telephone if the acknowledgement from it identifies the same local area as identified by the response.
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Citations
4 Claims
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1. A wide area cordless telephone system covering a service area which is divided into a plurality of local areas, comprising:
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a plurality of home position portable cordless telephone provided in each one of said local areas, each of said home position cordless telephones having a corresponding line terminal in a telephone switching system and multi-channel access means for establishing a two-way radio link, transmitting a registration request through the established link upon entry of a manual command and subsequently transmitting an acknowledgement upon receipt of a response identifying a local area, said request identifying the cordless telephone which transmitted the request; a plurality of access units provided in said one local area for establishing said radio links with said home position cordless telephones and non-home position cordless telephones belonging to another level area; and a pre-dialing switching stage provided in said one local area for establishing a connection between said access units and line terminals of said telephone switching stage including control means connected to said access units for receiving said request and acknowledgement therethrough, transmitting a response identifying the local area of said pre-dialing switching stage through one of said access units on receiving a registration request and assigning a reserved line terminal of said telephone switching system to a non-home position cordless telephone if the same is identified by the received request, and making registration of a cordless telephone on receiving an acknowledgement identifying the same local area as identified by said transmitted response. - View Dependent Claims (2, 3, 4)
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Specification