JPH02241128A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To attain listening of a slave set in an area for simultaneous communication broadcast by sending simultaneous communication broadcast from an extension telephone set to a call exclusive master set having a same extension number in each zone via its connection line and allowing the caller exclusive master set to send the simultaneous communication broadcast to the slave set in the area. CONSTITUTION:When hook off is implemented by an extension telephone set or the like, the extension telephone set and an exchange 9 are linked. When a call of a slave set 20 in an area is given, a call tone signal is sent from the exchange 9 to a caller exclusive master sets 4-6. When a common ID code to apply simultaneous communication multiple address is inputted to the slave set 20 by the pushbutton operation by the extension telephone set, the ID code is sent to the caller exclusive master sets 4-6 in each zone not using the line via the exchange 9. Then the call is given to the slave set 20 in the zone by the caller exclusive master sets 4-6 in each zone and the slave set 20 and the caller exclusive master sets 4-6 are set in a same channel. Thus, the listening of the simultaneous communication broadcast by the slave sets 20 in an area is attained.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a cordless telephone used within a certain call area such as a golf course, construction site, or factory. In contrast, the present invention relates to a new cordless telephone system that enables simultaneous broadcasting of communications using an extension telephone (or system representative).

[Conventional example] In recent years, cordless telephones have been proposed by various manufacturers as new home appliance products. A cordless telephone consists of a connecting device (base unit) and a handset (slave unit) that are connected to a telephone line, and signals such as calls, calls, and voice communications are transmitted and received between them using radio waves. Therefore, the connection device is equipped with a radio wave transmitting and receiving function, and the handset also has a built-in radio wave transmitter and receiver. In other words, the other party's voice is converted from an electrical signal to a radio wave signal by the connecting device and sent to the handset. Conversely, a voice signal transmitted by radio waves from a handset is converted from a radio wave signal to an electrical signal by the connecting device, and then transmitted to the other party via a line.

[Problem to be solved by the invention] By the way, the cordless telephones mentioned above come in two types: a low power type for home use and a low power type for commercial use, but in both cases, the base unit and slave unit have come to have a one-to-one correspondence. ing.

Therefore, a cordless phone with one base unit and N (any number) handsets, or a cordless phone with M (any number) base units.
Cordless telephones with one base unit and N handset units are now in demand, and especially for business use such as golf courses, construction sites, and factories, there is a strong demand for use in emergency communications, etc. has been done.

This invention was made in view of the above problems, and its purpose is to improve communication between cordless telephone handsets within a predetermined area and other handsets, extension telephones (or system representatives), or outside telephones within the area. A cordless telephone system that enables telephone calls, broadcasts broadcasts to multiple handsets within the area using an extension telephone, and allows broadcasts to be heard even if they are in the same location within the area. Our goal is to provide the following.

[Means for Solving the Problems] In order to achieve the above object, the cordless telephone system of the present invention includes a plurality of handsets used within a predetermined area,
A plurality of base units are arranged in each zone of the area and consist of a base unit for incoming calls and a base unit for outgoing calls, and a base unit for incoming calls and a base unit for outgoing calls to exchange signals with the handsets. Between the base units, a base unit for incoming calls or a base unit for outgoing calls is provided with an extension telephone (or system representative) or an exchange that connects the external line by wire, and each base unit for incoming calls has a different extension number. and has the function of linking with the handset, receiving signals such as calls, ID codes, voice communication, etc. from the handset by radio waves, and transmitting these signals to the exchange, A call-only base unit has a different extension number only in the same zone, and
A link is established with the called handset in response to the signal sent through the above exchange, and signals such as calls, calls, calls, voice communications, etc. are sent to the handset within the corresponding zone from the base unit for incoming calls, an extension telephone, or an outside telephone. The exchange has the function of connecting the line with the base unit for incoming calls, the base unit for outgoing calls, the extension telephone, or the external telephone. When simultaneously broadcasting communications to slave units, signals such as ID codes and voice communications from the extension telephones are broadcast to the slave units via the above-mentioned exchange and the call-only base unit of each zone. The gist is:

Further, in the cordless telephone system of the present invention, when simultaneously broadcasting communications to handsets within the above-mentioned area, the handsets are designed to be used only for reception.

[Operation] With the above configuration, the extension telephone or system representative performs a hook-off operation, and the extension telephone and the exchange are brought into a link state. continue,
When a call is made to a slave unit within the area, the ringing tone signal is sent to the call-only base unit in each zone by the exchange. Then, by operating the button on the extension telephone, a common ID code (
For example, when ID0O) is input, the ID code is sent via the exchange to the call-only base unit in each zone where the line is not in use. Then, the call-only base unit in each zone makes a call to the handset in the zone, and these handsets and the call-only base unit are set on the same channel.

At this time, the microphones of the slave units within the area are muted, and these slave units are made available only for reception.

In this manner, when the link on the called side is completed, the extension telephone and the local slave unit are connected via wireless or wired lines, so that simultaneous communication and broadcasting can be performed by the extension telephone.

[Example] Embodiments of the present invention will be described below based on the drawings.

In FIGS. 1 to 3, a plurality of base units are provided in each zone, for example, A, B, and C zones, which are divided into a predetermined area (for example, the grounds of a golf course, etc.), There are now multiple machines. In the A zone, for example, a base unit (base unit only for incoming calls) 1a for extensions 401 to 403 is installed.

2 a! 3a and the base unit for extensions 201 to 203 (base unit only for making calls)4. ．． 5.6 and base unit 1a for incoming calls
, 2a, 3a, and a call originating base unit 4. , 5 and 6, respectively.
8.8 is provided. In addition, in the B zone, for example, a base unit (base unit only for incoming calls) for extensions 404 to 406 is provided.
b, 2b, 3b, base units (base units for outgoing calls) 4, 5.6 with the same extensions 201 to 203 as in the A zone, and base units for incoming calls 1c, 2c.

An incoming call controller 7b for controlling 3c, and call originating controllers 8, 8.8, which are the same as in the A zone, are provided. Furthermore, in the C zone, for example, base units (base units for incoming calls) lc, 2c, and 3c for extensions 407 to 409, and the same extension 2 as in the A zone.
Base unit for extensions 01 to 203 (base unit for making calls) 4°5.6
, an incoming call controller 7c that controls the incoming call-only base units 1b, 2b, and 3b, and a call originating controller 8 that is the same as in the A zone. Base unit for incoming calls 1a, lb, 1. c, 2a, 2b,
2c, 3a, 3b, and 3c are each connected to the exchange 9 by wire, and are connected to a call-only base unit 4. , 5 and 6 are connected to the exchange 9 via a call controller 8 and a distributor 10, respectively. The exchange 9 is connected with an extension telephone (or a system representative of the extension 200) 11 and an outside line 12, as in the conventional case.

The above base unit for incoming calls 1a, lb, lc, 2a, 2b, 2c
, 3a, 3b, and 3c include a radio device 13 that transmits and receives signals such as calling, ID code, and voice communication to and from the slave device in the zone via an antenna, and a radio control unit (CPU) 1 that controls this radio device 13. .4 and a wired control unit (CPU) 15 for making a line connection with the exchange 9, and one of the plurality of base units exclusively for incoming calls is selected by the incoming call controllers 7a, 7b, and 7c, respectively. and signal reception control is performed.

In addition, each zone's calling-only base unit 4, 5.6 has a wireless device 16 that sends and receives signals such as calls, ID codes, voice communication, etc. to and from the slave device in each zone, and a wireless device 16 that controls this wireless device 16. A control unit (CPU) 17 and a wired control unit (CPU) 18 for making a line connection with the exchange 9 are provided, and the call controller 18 selects one of the plurality of call-dedicated machines and sends a signal. reception control is performed.

Furthermore, in the A zone, ID codes (IDOI) to (I
There is a handset 20 of DO4), and the ID code (
There are handsets 20 with ID codes (IDIO) to (ID13), and handsets 20 with ID codes (ID30) to (ID33) exist in the C zone.

In the above cordless telephone system, a predetermined area is divided into three zones, A, B, and C, and three base units are installed in these zones, and there are four slave units in each zone. The number of zones, the number of master devices, and the number of slave devices may be different. Further, in this example, for example, one base unit can be connected to a maximum of six lines, one zone can be connected to a maximum of 18 lines, and slave units can secure three communication paths.

As a further supplement, the above cordless telephone system:
A duplex system is adopted, and voice communication including various data transmissions within the voice band can be performed. Further, regarding the ID code to prevent erroneous billing and erroneous connection, the ID code is checked during line connection operation, and if there is a mismatch, line setting is not performed.

Furthermore, the master units placed in each zone are housed in a housing that cannot be easily opened.

Next, the operation of the cordless telephone system with the above configuration will be explained in the fourth section.
This will be explained based on the flowchart shown in the figure.

In this cordless telephone system, a common ID code, for example (IDOO), which is common to all slave units used within the above area, has already been determined for simultaneous broadcasting.

First, it is assumed that the extension telephone 11 (or the system representative) performs a simultaneous communication broadcast to slave units within the area. Then, when the extension telephone 11 is operated off-hook (step 5TI), it is connected to the exchange 9. Next, press the button on the extension telephone 11 to select r2'' and r0.
4. The designated dial number "1" is pressed and a call is made (step 5T2).

Then, the exchange 9 determines whether or not the calling base unit 4 with the extension number (201) located in each zone is busy (step 5T3), and if it is busy, the line is connected. is automatically transferred to the calling-only base unit 5 having the extension number (202), and it is determined whether the calling-only base unit 5 is busy or not (step 5T4). Furthermore, when the calling base unit 5 is busy, the line connection is automatically transferred to the calling base unit 6 of extension number (203), and whether the calling base unit 6 is busy or not It is determined whether or not (step 5T5).

If all of the call-only base units 4, 5.6 are in use, the exchange 9 transmits a busy tone signal to the extension telephone 11 indicating that one call is in progress (step 5T6).
).

In steps ST 3 , ST 4 , and ST 5, if the call-only base unit that is not using a line is, for example, the call-only base unit 4 with extension number (201,), the exchange 9 sends the call-only base unit 4 to the extension telephone 1 The ringing tone signal is sent to the calling base unit 4 (step 5T7). In this way, when the extension telephone 11 calls a handset within the area, when the exchange 9 sends a ring tone signal to the calling base unit 4, the calling base unit 4, which controls the calling base unit 4, An automatic hook-up, that is, an off-hook operation is automatically performed in the call controller 8 (step 5T8), and a sound signal such as a "beep" is transmitted to the extension telephone 11 (step 5T9).

When a simultaneous ID code (1) is input into the extension telephone 11 in response to the "beep" sound signal, the simultaneous ID code (00) is verified in the call controller 8, and the simultaneous communication It is determined that the ID code is a message, and is temporarily stored in the internal memory (Step 5 TII), and the stored ID code is sent to the calling base unit 4 (Step ST1.2).
). Subsequently, the simultaneous ID code is stored in the calling base unit 4 and sent to the call controller 8. A call signal is sent from the call controller 8 to a call-only base unit (1 King LC).
NT) 4 (step 5T13). Upon receiving this, the calling-only base unit 4 transmits a common ID code (IDOO) to the slave units in the zone (step 5T14). ■When an acknowledge (ACK) signal is returned from the handset that received the D code (step 5T15), the base unit 4 for calling in each zone and the handsets in the area are set to the same channel (step ST1.
6). Upon reception of the ID code, the microphones of the slave units in each zone are automatically put into the mu-I state, that is, the transmission is prohibited (step 5T17).
).

Subsequently, the call-only base unit 4 of each zone and the called side of the handset in that zone are brought into a linked state (step 5T18), and the handsets within the area are set to receive only (step ST1.9). Then, when a broadcast is made on the extension telephone 11 to the receiving-only handset on the same channel as the calling-only machine 4, the audio signal of the broadcast is transmitted to each telephone via the exchange 9. It is transmitted by radio waves from the base unit 4 exclusively for calling in the zone to the slave unit 20 within the area. In this way, it is possible to simultaneously broadcast communications to all handsets using the extension telephone 11 and the like.

Thereafter, when the extension telephone 11 is operated on-hook, the above-mentioned simultaneous communication routine is ended (step 5T20),
Returns to normal cordless communication.

[Effects of the Invention] As explained above, according to the present invention, a plurality of handsets used within a predetermined area and a mobile phone arranged in each zone of the area for exchanging signals with the handsets are provided. multiple base units for incoming calls and base units for calling, between these base units for incoming calls and base units for calling, and between these base units for incoming calls or for calls, and extension telephones (or system representatives) Alternatively, we installed an exchange that connects external lines by wire,
When broadcasting broadcast communication to the slave units in the above area using the extension telephone, the exchange and the calling-only base unit of each zone are connected, and the calling-only base unit and the slave unit in the zone are linked. In order to do this, broadcasts from extension telephones are sent via the connection line to the call-only base units with the same extension number in each zone, and these call-only base units transmit the broadcasts to slave units within the area. This has the effect that even if you are in the same area, if you have a handset, you can listen to the broadcast.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a cordless telephone system showing an embodiment of the present invention, FIGS. 2 and 3 are schematic partial block diagrams of the cordless telephone system, and FIG. 4 is an operation of the cordless telephone system. FIG. 2 is a flowchart diagram for explaining. In the figure, la, lb, lc, 2a, 2b, 2c, 3a, 3
b, 3c are base units for incoming calls; 4. , 5 and 6 are base units for making calls, and 7a. 7b, 7c are incoming call controllers, 8 is a call controller, 9 is an exchange, 10 is a distributor, 11 is an extension telephone (or system representative), 12 is an outside line (telephone line), 13, 1.6 is a wireless machine, 14.17 is the radio control unit (CPU), 15.18
2 is a wired control unit (CPU), and 20 is a slave unit. Patent applicant: Fujitsu General Co., Ltd. Patent attorney: Takuya Ohara

Claims (2)

[Claims] (1) Consists of multiple handsets used within a given area, and a base unit for incoming calls and a base unit for calling, which are placed in each zone of that area and are used to exchange signals with these handsets. Between multiple base units, the base unit for incoming calls and the base unit for outgoing calls, the base unit for incoming calls or the base unit for outgoing calls, and the exchange that connects the extension telephone (or system representative) or external line by wire. is provided, and each of the incoming call-only base units has a different extension number,
and has a function of being in a linked state with the slave unit, receiving signals such as calls, ID codes, and voice communication from the slave unit via radio waves, and transmitting these signals to the exchange, and the base unit exclusively for making calls. has a different extension number only in the same zone, and is linked with the called handset in response to a signal via the exchange, and when a call is received from the call-dedicated base unit, an extension telephone, or an outside telephone, the ID The exchange has the function of transmitting signals such as codes and voice communication to slave units in the zone, and the exchange has the function of connecting the line with the base unit for incoming calls, the base unit for calling, the extension telephone, or the external telephone. When the extension telephone, etc. broadcasts a simultaneous communication to slave units in the area, the ID code and voice communication signals from the extension telephone are sent to the exchange and the call-only base unit of each zone. 1. A cordless telephone system, characterized in that simultaneous communication is broadcast to said slave units via said cordless telephone system. (2) A cordless telephone system in which the handset has a function of prohibiting the transmission of audio signals, etc. using the built-in microphone and making it only for reception when broadcasting the simultaneous communication.