JPS6365249B2 - - Google Patents

Description

[Detailed Description of the Invention] [Description of the Technical Field] The present invention provides a wireless device for the subscriber line terminal and the telephone, instead of a telephone connected to a subscriber line terminal of a wired communication switching network, to transmit voice signals wirelessly. Related to cordless subscriber telephones that transmit and receive data.

[Description of prior art]

Conventionally, this type of cordless subscriber telephone (hereinafter referred to as
It's simply called a "cordless phone." ) has a movable range of approximately 20 meters around a specific master station wireless device. Furthermore, since there is no billing and incoming call transfer function for other base station wireless devices, calls cannot be made via any base station other than the specific base station, and the mobile range is narrow.

[Explanation of purpose]

The present invention improves on this point, and aims to provide a cordless telephone system that enables connection between a cordless telephone and all base station wireless devices.

[Summary of the invention]

The present invention relates to a cordless communication system configured to wirelessly connect to a master station wireless device provided at a terminal of a subscriber line of an organic communication switching network, and to connect to a wired communication switching network via the master station wireless device. In the subscriber telephone equipment, the cordless subscriber telephone is provided with means for encoding and automatically transmitting a subscriber number different from the subscriber line number of the subscriber line, and each exchange is provided with the subscriber address of the cordless telephone. The system is equipped with a means for decoding to which exchange this cordless telephone belongs, and transmitting the current location information and billing summary information of this cordless telephone to the belonging exchange, and the telephone to which the cordless telephone belongs receives an incoming call based on the above information. The present invention is characterized in that it includes means for transferring or aggregating charges.

[Explanation based on examples]

An embodiment of the present invention will be described based on the drawings.
The figure is a block diagram of essential parts of an embodiment of the present invention. A plurality of exchanges 1 ₁ to 1 _o are connected via a common line 2 . These exchanges ₁₁ to _1o are connected to their terminals via subscriber lines 31 _{to 3oo} , with a master station wireless device _51.
~ _5o , ₆₁ ~ _6o , and ₇₁ ~ _7o are connected, respectively. These master station wireless devices 5 ₁ to 5 _o , 6 ₁ to 6 _o , 7 ₁
~7 _o are the service areas 10 ₁ ~ 10 _o , respectively.
11 ₁ to 11 _o and 12 ₁ to 12 _o . Also, in the figure, 15 to 16 are cordless telephones, ₁ , ₃ , ₅ ,
₇ , ₉ , ₁₁ are downlink frequencies, ₂ , ₄ , ₆ , ₈ ,
_Ten ,
₁₂ indicates the upstream frequency.

With such a circuit configuration, the present invention provides the cordless telephone with a subscriber number separate from the subscriber line number. Further, the current location of the moving telephone is stored and registered in the switching office to which the cordless telephone subscribes (hereinafter referred to as the "home switching office"). As a result, incoming calls are forwarded to the cordless phone's destination and charges are totaled for calls made from the destination, and restrictions on the range of movement of the cordless phone are lifted.

That is, the cordless telephones 15 to 18 and the master station wireless devices 5 ₁ to 5 _o , 6 ₁ to 6 _o , and 7 ₁ to 7 _o have subscriber numbers that are not necessarily the same. Now, exchange 1
A cordless telephone 15 whose _home area is the base station wireless device 7 ₁ connected to the base station wireless device 7 ₁ joins the service area 10 of the base station wireless device 5 _o from the service area 12 ₁ of the base station wireless device 7 1 to the switching center 1 ₁ . If the user moves to the service area _{12 o ,} the cordless telephone 15 automatically starts scanning for other reception frequencies as the input electric field decreases and receives the downlink frequency ₃ of the service area 10 _o . and stop.

Each master station wireless device 5 ₁ to 5 _o , 6 ₁ to 6 _o , 7 ₁ to 7 _o
always transmits down frequencies ₁ to ₁₁ , and if there is no cordless phone to connect, it sends an FSK signal indicating that the master station wireless device is idle, an idle line signal.
It is sent by modulation. Service area 10 _o
If another cordless telephone is in use, the cordless telephone 15 confirms that there is no idle line signal on the downlink frequency ₃ , learns that it is busy, completes the call, and returns to the idle line signal. Wait until it is sent. Cordless telephone 15, which has stopped after receiving downlink frequency ₃ , emits uplink frequency ₄ and sends the subscriber number of cordless telephone 15 to exchange ₁₁ . This operation is automatically performed when the input electric field falls below the limit value even when entering and exiting the same service area.

The subscriber number of the cordless telephone 15 transmitted from the cordless telephone 15 at the upstream frequency ₄ is received by the master station wireless device 5 _o and transmitted to the exchange 1 ₁ via the subscriber line 3 _o . When the subscriber number of the cordless telephone 15 is decoded at the exchange 1 ₁ , the cordless telephone 15 determines that the exchange 1 _o is the home exchange, and connects the cordless telephone 15 to the home exchange via the common line 2 . The current location of the cordless telephone 15 to the station 1 _o , i.e. the subscriber line 3 _o of the exchange 1 ₁
Information indicating that the user is in this zone is sent to the user.

This information is written into the subscriber memory of the home exchange _1o , and the home exchange _1o transfers incoming calls to the current location and tallies charges for calls originating from the current location.

[Explanation of effects]

As explained above, according to the present invention, a subscriber number is given to the cordless telephone in addition to the subscriber line number, and when the cordless telephone moves from the home exchange to the service area of another exchange, the subscriber number It was decided that the current location information (subscriber line in use) of the above-mentioned cordless telephone would be sent from this other exchange that decoded the code to the home exchange.

Therefore, no matter where the cordless telephone moves to the service area of any master station wireless device in the wired communication exchange network, incoming calls can be forwarded and charges for outgoing calls can be aggregated, increasing the range of movement of the cordless telephone compared to conventional methods. can be significantly expanded. Furthermore, according to the present invention, it is possible to provide a plurality of cordless telephones each having a different subscriber number within the zone of a single master station wireless device, and the required number of master station wireless devices can also be reduced. It has advantages such as low cost and low cost.

[Brief explanation of drawings]

The figure is a block diagram of essential parts of an embodiment of the present invention. 1 ₁ ~ 1 _o ... exchange, 2 ... common line, 3 ₁ ~ 3 _oo
...Subscriber line, 5 ₁ ~ 5 _o , 6 ₁ ~ 6 _o , 7 ₁ ~ 7 _o ...
... Master station wireless device, 10 ₁ to 10 _o , 11 ₁ to 11 _o ,
12 ₁ ~12n...Service area, 15~18
...cordless phone.

Claims (1)

[Scope of Claims] 1. A device configured to wirelessly connect to a master station wireless device provided at a terminal of a subscriber line of a wired communications switching network, and to be connected to the wired communications switching network via this master station wireless device. In the cordless subscriber telephone equipment, the cordless subscriber telephone is equipped with a means for encoding and automatically transmitting a subscriber number different from the subscriber line number of the subscriber line, and each exchange is equipped with It is equipped with a means for decoding which exchange this cordless telephone belongs to from the subscriber number and transmitting the current location information and billing summary information of this cordless telephone to the belonging exchange, and the above-mentioned information is sent to the belonging exchange. 1. A cordless subscriber telephone device characterized by comprising means for transferring incoming calls or totaling charges.