JPH02246629A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To avoid the inconvenience of setting to the same channel of each master set in a duplicate zone by setting plural channels available in an area to each zone while being shared with each zone. CONSTITUTION:A different channel is set to a zone and when available channels are, e.g. 1CH-88CH in an area, and the channels are shared as 1-29CH for a zone A, 30-59CH for a zone B and 60-88 for a zone C. In the case of a call of a slave set in the area, when a call comes form a call exclusive master set 4 in the zones A and B where the slave set 20 of the ID code (ID10) exists at present respectively, since the channel differs from the zones A and B, any channel of 30-59CH is set between a slave set (ID10) 20 in the zone in duplicate and, e.g. the call exclusive master set 4 in the zone B having a large electric field.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cordless telephone used within a fixed call area such as a golf course, construction site, or factory, and more specifically relates to a cordless telephone that is used within a fixed call area such as a golf course, construction site, or factory. The present invention relates to a new cordless telephone system in which the channels available within the area are distributed and set to those zones.

[Conventional example] In recent years, various manufacturers have been proposing cordless telephones 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, ID codes, and voice communications are sent 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.

The connection device converts the electrical signal into a radio signal and sends it 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.

[Problems to be Solved by the Invention] By the way, the above-mentioned cordless telephones include a weak type for home use and a low power type for commercial use, but in both cases, the base unit and slave unit correspond on a one-to-one basis. , and multiple handsets cannot be used.

Therefore, a cordless phone with one base unit and N (any number) handsets, or a cordless phone with M (any number) base units.
There is a growing demand for a cordless telephone with a single base unit and N handsets, and there is a strong demand for a cordless telephone that can make calls between handsets in the same area, such as golf courses, construction sites, or factories. In addition, the area is divided into multiple zones,
When a base unit is placed in each zone, there will be an overlapping area in those zones. In this case, a problem may occur for the child device located in the overlapping area of the zone when transmitting and receiving signals with the parent device.

This invention was made in view of the above problems, and its purpose is to set different channels for each zone so that child devices located in overlapping zones will not have problems in exchanging signals with the parent device. The object of the present invention is to provide such a cordless telephone system.

[Means for Solving Problem 71111] 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, and a plurality of handsets arranged in each zone of the area. Make calls to and from the handset,
One or more base units that send and receive signals such as ID codes and voice communications, and an exchange that connects the base unit and extension telephones (or system representatives) or outside lines by wire, are installed. The gist is that a plurality of usable channels within the zone are distributed and set up in each of the zones, and the handset and base unit in each zone transmit and receive signals through different channels.

[Function] With the above configuration, the wireless channel between the base unit and the slave unit is different in each zone, and for example, the channel set between the base unit and slave unit in zone A is different from the channel set between the base unit and slave unit in zone B. By the way, when dividing the above area into multiple zones,
Depending on the topography of the area, there may be overlapping areas between these zones. Then, in order to enable all handsets to talk within that area, if a base unit is placed in each zone, a handset that enters the zone overlap area will be able to communicate with the base unit in both zones. Channel settings can be made between one parent device and the other. That is, this is because the usable channels in both zones are different. Therefore, there is no problem that a child device in the overlapping area sets a channel with a parent device in both zones.

[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. The A zone includes, for example, the base units (base unit only for incoming calls) la, 2a, 3a for extensions 401 to 403, the base unit (base unit only for calls) 4. '5, 6,
An incoming call controller 7 that controls the incoming call-only base units 1a, 2a, and 3a.
a, and a call controller 8°8.8 for controlling the call-only base units 4, 5, and 6, respectively. In addition, in the B zone, for example, the base units (base units for incoming calls) lb, 2b, and 3b for extensions 404 to 406, and the same extension 20 as in the A zone.
An incoming call controller 7b that controls the base units 1 to 203 (calling-only base units) 4, 5, and 6 and 1 call-only base units 1b, 2b, and 3b, and the same call controller 8 as in the A zone. , 8.8 are provided. Furthermore, in C zone, for example, within $140
7 to [409 base unit (base unit for incoming calls) 1c.

2c, 3c, and the same extensions 201 to 20 as A zone
3 base units (call-only base units) 4, 5.6, an incoming call controller 7c that controls the incoming call-only base units 1c, 2c, 3c, and the same call controllers 8, 8. Base unit 1a, lb, lc, 2a, 2b exclusively for incoming calls provided with 8 and 8.

2c, 3a, 3b, and 3c are each connected to the exchange 9 by wire, and the call-only base units 4, 5, and 6 are connected to the exchange 9 via the call controllers 8, 8.8, and the distributor 10, respectively. has been done. As before, the exchange 9 has an extension telephone (or system representative of extension 200) 11 and an outside line 12.
is connected.

The above base unit for incoming calls 1a, lb, lc, 2a, 2
b.

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) that controls this radio device 13. 14 and a wired control unit (CPU) IS 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. , signal reception control is performed.

In addition, the base units 4, 5.6 for making calls in each zone.

A radio device 16 that transmits and receives signals such as calls, ID codes, voice communication, etc. to and from the slave devices in each zone, and this radio device I
6, and a wired control unit (CPU) 18 for making a line connection with the exchange 9. 5
, 6 is selected.

On the other hand, for example, the A zone has handsets 20 with ID codes (IDOI) to (IDO4), the B zone has handsets 20 with ID codes (LDIO) to (ID13), and the C
Handsets 20 with ID codes (ID30) to (ID33) exist in the zone. Further, different channels are set for these zones. For example, if the available channels in the above area are ICH to 88C) I, the channels shown in the table below are allocated to each of the above zones.

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 base units, and the number of slave units may be different, and the number of usable channels and their allocation within the above area may also be different.Furthermore, in this example, for example, one base unit may A maximum of 6 lines can be connected, and a maximum of 18 lines can be connected in one zone, and three communication paths can be secured between handsets.

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 is performed. Furthermore, regarding the ID code to prevent erroneous charges and erroneous connections, the codes are compared during the line connection operation, and if they do not match, the line is not set up. 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 having the above configuration will be explained. Note that when dividing the above area into a plurality of zones, it is assumed that there are overlapping areas (shaded areas in FIG. 1) between the zones due to the topography of the area.

First, as shown by the broken line in FIG. 1, a call is made between a handset (ID10) 20 that is moving to the overlapping area of zones A and B and a handset (ID33) 20 that is currently in zone C. It is assumed that the slave device (ID33) 20 calls the slave device (ID33) 20 when performing the above.

Then, when the call button of the handset (ID33) 20 is pressed, a call request is made on the handset (ID33) 20, and a call is made to the handset (ID33) 20 that has already been selected by the call controller 7a in the same A zone. When a call is received on the call-only base unit 1a, the call-only base unit 1a sends the 6 calls shown in the table above to the slave unit.
A response call is made to an empty channel among channels 0 (CH) to 88 (C1l). On the other hand, the calling device (I
D33) 20 makes a response call on that free channel, and when the free channel receives a call to the incoming call-only base unit 1a, the calling handset (ID33) 20 and the incoming call-only base unit 1a are linked. state. At this time, in the calling handset (ID33) 20, if a designated dial number, in this case an extension number r2J, rOJ, or r14, is pressed with the button after operating the call button, that extension number will be called. Automatic dialing is performed by the call-only base unit 1a, and a dial signal for the extension (201) is sent to the exchange 9.

Next, at the exchange 9, it is determined whether or not the calling base unit 4 of the extension number (201) located in each zone is in use, and if one call is in progress, the line is automatically connected. The call is then transferred to the calling-only base unit 5 of the extension number (202), and it is determined whether or not the calling-only base unit 5 is in use.

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. Then, when all the calling base units 4, 5, and 6 are busy, the exchange 9 sends a busy tone signal to the called handset (1033) 20 to indicate that the call is busy. be done.

In the above, the call-only base unit that does not use the line is
For example, in the case of the calling base unit 4 with extension number “201”, the exchange 9 sends a ring tone signal to the calling base unit 4 and the called slave unit (1033) 20 in each zone. In this way, when calling a handset within the area, the exchange 9 selects one of the plurality of call-only bases 4, 5, and 6.
When a ring tone signal is sent to the call-only base unit 4 that is not using the line, the call controller 8 automatically performs an automatic hook-up, that is, an off-hook operation. ” sound signal is from the called handset (ID3
3) Sent to 20.

The "beep" sound indicates that the called handset (ID33)
ID of the called slave device 20 by button 20
When the code (IDIO) is input, the ID code (00) is checked in the calling controller 8 of each zone, 1 and temporarily stored in the internal memory, and the ID code (ID33) is It is sent to the call-only base unit (FIX) 4.

Main unit for making calls (FIX) 44:, Te ID: I
- code (ID33) is stored, and a storage completion signal is sent to the call controller 8. Then, the call controller 8 sends a ring tone signal to the call-only base unit (CNT) 4, and the called slave unit (ID33) 20
sent to. By sending a ringing signal, 1 call-only device (FIX) 4 sends i to the handset in the zone.
A call is made for the D code (IOIO), channel, etc.

Then, the call-only base unit 4 of the A zone and B zone where the slave unit 20 with that ID code (IDIO) currently exists.
A call is made from each. At this time.

The above called handset (ID33) 20 and the base unit 1 for incoming calls
A call is made for the same channel settings as those for the A zone and B zone, but as shown in the table above, the channels in the A zone and B zone are different, so the child in the overlapping area The device (IOIO) 20 is connected to the call-only base device 4 in the B zone where the electric field strength is high, for example.
) to 59 (CH) will be set. Furthermore, for the handset (IOIO) 20, for example, if the electric field strength of the call-only base unit 4 in the A zone is large, the slave unit (IDIO) 20 will have a (C)I) to 29 (C11)
One of the channels will be set.

In this way, for child devices located in zone overlapping areas, channel setting is performed only with the parent device in one of the zones. Therefore, the called destination slave device (iDlo) 20
The call-only base unit 4 in the A zone and the B zone makes a call, the same channel settings are made, and the handset (IOIO) 20 connects with the call-only base unit 4 in both the A zone and the B zone. There is no link status.

Next, the base unit 4 for calling only in either zone A or zone B and the called handset (IDIO) 20 are set to the same channel, and the base unit 4 for calling only and the handset (iDlo) 20 are set to the same channel.
When the called side 20 is brought into a linked state, a ringer tone signal is transmitted to the called slave unit (1010) 20 by the base unit (FIX) 4 for calling only in the B zone, for example.

Here, when the call button operation, that is, the off-hook operation is performed on the called handset (IDIO) 20, the TA
The LK signal is sent to the call originating device (FIX) 4. Then, a wire switching signal is transmitted from the call-only base unit (FIX) 4 to the call controller 8, and switching to a wire connection with the exchange 9 (relay switching) is performed.

As a result, the called handset (ID33) 2 in the C zone
The called handset (IDIO) 20 in the overlapping area with 0 is connected by a wireless or wired line by the base unit 1a for incoming calls in the C zone, the exchange 9 and the base unit 4 for calling in the B zone,
It is possible for these handsets to communicate with each other.

Here, as mentioned above, the slave device (IDIO) 20
is in a linked state with the call-only base unit 4 in the A zone and B zone, and the call-only base unit 4 and the above-mentioned call-only base unit 1 are linked.
Even if the line between c is connected, the handset (ID33) 20
It is possible to talk between the handset (IOIO) 20 and the handset (IOIO) 20. By the way, if for some reason the handset (IDIO) 20 moves and enters the A zone, the handset (IOIO) 20 and B
Since electric field detection of that channel is no longer performed in the zone's call-only base unit 4, for example, its slave unit (IOI
O) A call termination signal is transmitted from 20. Then, the lines at the calling handset (ID33) 20 and the calling handset (IOIO) 20 are disconnected by the call termination signal. In other words, the handset (IOIO) 20 and the handset (ID
33) If the call between 20 and 20 is disconnected, this will cause a problem. However, according to the present invention, the above-mentioned problem does not occur because a child device in an overlapping area of zones is configured to channel only with a parent device in one of the zones.

Next, when the call is terminated, for example, when the call button is operated on the calling destination handset (IOIO) 20 to end the call, an end signal is sent to the calling base unit (FIX).
4, further transmitted to the exchange 9, and further transmitted to the calling device (iD33) 20.

Here, when the calling device (ID33) 20 goes on-hook, the line between the calling device (ID33) 20 and the called device (iDlo) 20 is disconnected, and the next cordless telephone communication is terminated. It is possible to perform actions for.

In addition, in the above embodiment, the called slave device (IDIO) 2
We explained the case where 0 is in the overlapping area of zones, but
The same control procedure as described above is also performed when the caller handset (ID33) 20 is in the overlapping area of the zone or when other handsets in the area are in the overlapping area.

[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 and those base units.

By installing these base units and an extension telephone (or system representative) or an exchange that connects external lines with wired lines, we set up multiple channels that can be used within the above area to be distributed to each of the above zones. It is possible to eliminate the problem that a certain slave device is configured to have a channel only with the parent device in one of the zones, and the same channel setting is made with each parent device in the overlapping zone.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a cordless telephone system showing one embodiment of the present invention, and FIGS. 2 and 3 are schematic partial block diagrams of the cordless telephone system. In the diagram, la, lb, lc, 2a, 2b, 2c
, 3a. 3b and 3c are base units for incoming calls; 4, 5, and 6 are base units for outgoing calls; 7a, 7b, and 7c are incoming call controllers; 8 is a call controller; 9
is an exchange, IO is a distributor, 11 is an extension telephone (or system representative), 12 is an outside line (telephone line), 13, 16
14.17 is a wireless control unit (CPU), 15.18 is a wired control unit (CPU), and 20 is a slave device. Figure 2 Figure 3 Patent applicant Fujitsu General Co., Ltd. Agent Patent attorney Takuya Ohara Switching machine

Claims (1)

[Claims] (1) Multiple handsets used within a given area and multiple parents located in each zone of that area who make calls and send and receive signals such as ID codes and voice communications to and from these handsets. and an exchange that connects the base unit and an extension telephone (or system representative) or an outside line by wire, and distributes and sets a plurality of usable channels within the area to each zone, and A cordless telephone system characterized in that a slave unit and a base unit in each zone transmit and receive signals through different channels.