JPS58191540A - Cordless subscriber telephone set - Google Patents

Abstract

PURPOSE:To attain the connection of a cordless telephone set to all master station radio devices, by transmitting a subscriber address different from that of subscriber lines from the cordless telephone set to the master station radio devices. CONSTITUTION:The cordless telephone sets 15-18 and the master station radio devices 51-5n, 61-6n, 71-7n have different subscriber numbers from each other. When the telephone set 15 designating the master station radio device 71 connected to an exchange station 1n as a home area moves from a service area 121 of the device 71 to a service area 10n of the device 5n belonging to an exchange station 11, the telephone set 15 receives an outging frequency f3 of the area 10n and stops automatically. The stopped telephone set 15 irradiates an incoming frequency f4 and transmits the subscriber number of the telephone set 15 to the exchange 11 automatically. This number is received at the device 5n and transmitted to the exchange station 11. When this number is decoded at the station 11, the location of the telephone set 15 is transmitted to the station 1n. This information is stored in the station 1n and the totalizatin of charging to the transfer of an incoming call or its transmission is done.

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, the movable range of this type of cordless subscriber telephone (hereinafter simply referred to as "cordless telephone") is about zoma&, centered on 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 aims to improve this point, and an object thereof is 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 is configured to connect wirelessly to a master station wireless device provided at the end of a subscriber line of a wired communications switching network, and to connect to the wired communications switching network via this master station wireless device. In the cordless subscriber telephone device, 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 a It is equipped with means for decoding which exchange this cordless telephone belongs to from the address and transmitting the current location information and billing summary information of this cordless telephone to the belonging exchange. The present invention is characterized in that it includes means for transferring incoming calls or for calculating 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 main parts of an embodiment of the present invention.

The plurality of exchanges h to 1n are connected via a common line 2t-. There are subscribers in these exchanges 11-11! li! 31
~3nn to the terminal via master station wireless devices 51~5n,
61 to 61.7t to 7n are connected to each other.

These master station wireless devices 51 to 5n, 61 to 6H, 7+ to 7n
are respectively service areas 101~IOH, 11+~
11fl, 121-12. has. Also, in the figure 15~
16 is a cordless phone, /l, fs%fs, /l, f1
The 18th grave is the lower 9 frequencies, fl, f4, f-1f1, /18
, fxs indicate the upper frequency, respectively.

With this circuit configuration, the present invention provides a subscriber's calling number to the cordless telephone, separate from the subscriber's 1111 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"). ) Transferring incoming calls to the cordless phone's destination and collecting charges for calls made from the destination will remove restrictions on the range of movement of the cordless phone.

That is, the cordless telephones 15 to 18 and the master station wireless device 5
Breath~5g, 6t~6n, 7s~7n have subscriber IT numbers that are not necessarily the same. Now, the cordless telephone 15 whose home area is the master station wireless device 71 connected to the exchange Min is connected to the service area 121 of the master station wireless device 71.
If you move from service area 10n to service area 10n of master station wireless device 5n joining exchange 11, service area 12
1, the cordless telephone 15 automatically starts scanning another reception frequency due to a decrease in the input electric field, receives the downlink frequency /, of the service area 10r1, and stops.

Each master station wireless device 51 to 5n, 61 to 6n, and 71 to 7n always transmits the lower frequencies f1 to /11, and if there is no cordless phone to connect, it indicates that the master station wireless device is idle. The signal is modulated and sent to the blank line signal 'fr18. If another cordless telephone is in use within the service area 10n, the cordless telephone 15 confirms that there is no idle signal on the lower frequency f3, learns that it is busy, and completes the call. Wait until the idle signal is sent again. The cordless telephone 15 that has stopped receiving the lower frequency fs emits the upper frequency faf and sends the subscriber number of the cordless telephone 15 to the exchange 1xK. 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 upper frequency f4 is the master station wireless device 5n.
and transmitted to the switching center 11 via the subscriber line 3n. When the subscriber number of the cordless telephone 15 is decoded at the exchange 1 减, it is determined that the cordless telephone 15 has the exchange 1n as the home exchange, and the cordless telephone 15 is transferred to the cordless telephone 15 via the common line 2. the current location of the cordless telephone 15, i.e. the subscriber at the switching center;
Information indicating that the user is in this zone is sent to 3n.

This information is written into the subscriber memory of the home switching center 1n, and the home switching center 1n 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 of the above-mentioned cordless telephone (one subscriber in use) would be sent from this other exchange which 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 switching network, incoming calls can be forwarded and charges for outgoing calls can be aggregated. Can be expanded significantly. 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 is also small. It has advantages such as being able to do this and being cheaper.

[Brief explanation of drawings]

The figure is a block diagram of main parts of an embodiment of the present invention. h"'-1n... Switching office, 2... Common line, 31-3
nn...Subscriber line, 51~5n, 6t~6n, 71~
7n... Master station wireless device, 101~10n, 111~
IIn, 12t~12n...Service area, 15
~18.--Cordless telephone. Patent Applicant: NEC Corporation Representative, Patent Attorney: Takashi Izunao

Claims (1)

[Claims] (1) Cordless subscription that is configured to connect wirelessly to a master station wireless device installed 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 telephone equipment, the cordless subscriber telephone is equipped with a means for encoding and automatically transmitting a subscriber address different from the subscriber line number of the subscriber line, and each exchange is provided with a means for encoding and automatically transmitting a subscriber address different from the subscriber number of the cordless telephone. It is equipped with a means for decoding which switching center this cordless telephone belongs to, and transmitting the current location information and billing summary information of this cordless telephone to the switching center to which it belongs. 1. A cordless subscriber telephone device characterized by comprising a means for transferring or aggregating charges.