JPH04372252A - Outside line transfer system for cordless telephone set - Google Patents

Abstract

PURPOSE:To realize the outside line transfer system for the cordless telephone set in which the transfer of a call among plural slave sets by having only to mount a radio section to a master set. CONSTITUTION:One radio section 8 is mounted onto a master set A1 to connect the master set A1 and each slave set with one speech channel respectively, and when one slave set in talking with an outside line makes a specific holding operation, the master set A1 makes the line in the holding state and the speech channel is repetitively sequentially assigned to each slave set in time division and when other slave set makes the operation of hold release in this state and the speech channel reaches a time assigned to itself, the holding state is released and a channel between the other slave set and the outside line is formed.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a cordless telephone comprising a base unit connected to a telephone line and a plurality of slave units each connected to the base unit via a wireless line. relates to an outside line transfer method between each handset.

0002

BACKGROUND OF THE INVENTION In a conventional cordless telephone consisting of one base unit and a plurality of handsets (for example, two handsets), by performing a specific hold operation during an outside line call on one of the handsets, it is possible to There is also a type of handset that has an outside line transfer method that allows you to take a reserved outside line.

[0003] In this type of cordless telephone, two radio units are mounted on the base unit.

FIGS. 3 and 4 show the electrical configurations of the base unit and slave unit of the above-described conventional cordless telephone.

That is, the base unit A11 shown in FIG. Two radio units 52 are installed.

[0006] In the drawings, reference numeral 53 indicates a control section for controlling the overall operation of the base unit A11, reference numeral 54 indicates an operation section for inputting dial numbers and setting various modes, and reference numeral 55 indicates an earpiece built into the handset. Reference numeral 56 indicates a microphone built into the handset, and reference numeral 57 indicates the first radio section 51.
A first antenna 58 is connected to a second radio section 52.
A second antenna is connected to the second antenna.

[0007] Furthermore, the handset B11 shown in FIG.
1. A transmitting section 62, a control section 63 that controls the overall operation of the handset B11, an operation section 64 that inputs dial numbers and sets various modes, an earpiece 65 built into the handset, and a microphone 66 built into the handset. , an antenna 67 connected to a receiving section 61 and a transmitting section 62. Note that since the handset B12 has a similar configuration, only the reference numeral is given here.

Next, an example of the operation of the cordless telephone configured as described above will be explained.

[0009] The first wireless unit 51 of the base unit A11 and the slave unit B11
Assume that there is a connection between the two and an outside call is in progress.

At this time, when a specific hold operation is performed on the slave unit B11, the controller 63 sends the master unit A via the transmitter 62.
11, a signal indicating that a specific hold operation has been performed is transmitted.

Base unit A 11 receives this signal via antenna 57 at first receiving section 511 of first radio section 51 and sends it to control section 53 .

Based on the signal indicating this specific hold operation, the control unit 53 puts the base unit A 11 itself into an outside line hold state, and then drives the second radio unit 52 to transmit the call to the slave unit B 12. and calls the second wireless unit 52 and handset B12.
and are in a connected state. Further, the control unit 53 transmits a signal indicating that the outside line is on hold from the second wireless unit 52 to the handset B12. As a result, a display indicating that the outside line is on hold is displayed on the handset B12.

That is, at this time, two communication channels are used: one for connecting the first radio section 51 and the slave unit B11, and the other for connecting the second radio section 52 and the slave unit B12.

In this state, for example, when the handset B12 picks up an outside line, the second wireless unit 5 of the base unit A11 is transmitted from the handset B12 to the second wireless unit 5 of the base unit A11.
2, a signal indicating that an outside line will be taken is sent. Control unit 5
3, based on this signal to take the outside line, the first radio section 5
1 transmits a signal indicating the end of the outside line hold state to the handset B11, and returns the handset B11 to the standby state. Further, based on this signal to take the outside line, the control unit 53 releases the outside line hold state of the base unit A11 itself, and disconnects the outside line from the second line.
Connect to the wireless section 52. As a result, the handset B12 and the outside line enter a communication state.

[0015]

[Problems to be Solved by the Invention] As described above, in conventional cordless telephones equipped with multiple handsets, when adopting the above-mentioned outside line transfer method, the base unit has to have as many radios as the number of handsets. It was necessary to install the section. Therefore, there were problems in that the base unit itself became larger and the cost increased.

[0016] The present invention has been made in view of the above circumstances, and its purpose is to provide an outside line transfer for a cordless telephone that enables transfer between multiple slave units by simply installing one wireless unit in the base unit. The goal is to provide a method.

[0017]

[Means for Solving the Problems] In order to solve the above problems, the outside line transfer method of the cordless telephone according to the present invention is as follows:
In a cordless telephone consisting of a base unit connected to a telephone line and a plurality of slave units each connected to the base unit via a wireless line, by mounting one wireless unit on the base unit, The base unit and each of the slave units are connected through one call channel, and when one slave unit that is talking to an outside line performs a specific hold operation, the base unit puts the outside line on hold. After that, this one call channel is sequentially and repeatedly assigned to each handset in a time-sharing manner, and when another handset performs an operation to release hold in this state, the call channel is assigned to itself. When the time comes, the hold state is released and a communication path between another handset and an outside line is established.

[0018]

[Operation] The cordless telephone of the present invention is constructed so that one wireless unit is mounted on the base unit so that the base unit and each slave unit are connected to each other through one communication channel.

[0019] Then, when one slave unit that is talking to an outside line performs a specific hold operation, the base unit puts the outside line on hold and then
This one communication channel is sequentially and repeatedly assigned to each slave device by time division. In other words, it is time-divided to indicate to each handset that the outside line is on hold.

[0020] In this state, when another handset performs an operation to release the hold, when the call channel reaches the time assigned to this handset, the base unit releases the hold state of the outside line, and also releases the outside line from hold. and another slave unit,
Set to a call state.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are block diagrams showing the electrical configurations of a base unit and a slave unit of a cordless telephone according to the present invention. However, in this embodiment, a case is illustrated in which there are two slave devices.

In FIG. 1, base unit A1 includes one radio unit 8 consisting of a receiving unit 1 and a transmitting unit 2, a control unit 3 that controls the operation of the entire base unit A1, input of dial numbers, etc., and various mode settings. An operation unit 4 for making settings, an earpiece 5 built into the handset, a microphone 6 built into the handset,
It is composed of an antenna 7 connected to a receiving section 1 and a transmitting section 2. Although not shown in the drawings, base unit A1 is equipped with functions originally possessed by a telephone, such as a speech network circuit, a hook switch, and an incoming call detection circuit.

In FIG. 2, the handset B1 includes a receiving section 11,
A control unit 13 that controls the operation of the transmitting unit 12 and the entire handset B1.
, an operation section 14 for inputting dial numbers and setting various modes, an earpiece 15 built into the handset,
It is composed of a microphone 16 built into the handset, an antenna 17 connected to the receiving section 11 and the transmitting section 12. Note that since the handset B2 has a similar configuration, only the reference numeral is given here.

Next, the outside line transfer function of the cordless telephone with the above configuration will be explained. However, this outside line transfer function is mainly realized by the control unit 3 of the base unit A1 and the control units 13 and 23 of each slave unit B1 and B2, each of which includes software running on a microcomputer. There is.

It is assumed that the wireless unit 8 of the base unit A1 and the slave unit B1 are connected and an outside line call is in progress. At this time, slave unit B
When the specific hold operation 1 is performed, a signal indicating that the specific hold operation has been performed is transmitted from the control unit 13 to the base unit A1 via the transmitter 12.

Base unit A1 receives this signal via antenna 7 at receiving section 1 of radio section 8, and sends it to control section 3.

Based on the signal indicating this specific hold operation, the control unit 3 puts the base unit A1 itself into an outside line hold state, and the slave unit B
Temporarily terminate the connection with 1. Therefore, slave unit B1
is in a standby state on the control channel.

Next, the base unit A1 calls the slave units B1 and B2 alternately again on the control channel. Specifically, a signal is sent to call the handset B1, and if there is no response from the handset B1, a signal is sent to call the handset B2 next. Then, if there is no response from the slave unit B2, the slave unit B1 will respond again.
Send a signal to call. Repeat these actions.

[0030] While repeating the above operation, if there is a response from the handset B1, for example, the base unit A1 again transmits a signal to call the handset B2 that has not received a response. When handset B2 responds to this calling signal, base unit A1 adjusts the transmission and reception frequency to the designated communication channel included in the transmitted signal. Similarly, handset B1 and handset B2 are brought into a receiving state by adjusting their reception frequency to the communication channel specified in the call signal.

[0031] Thereafter, base unit A1 uses this call channel to transmit a signal to handset B1 instructing it to display an outside line hold state and to send a hold tone. When the slave unit B1 receives this, it transmits a response signal to the base unit A1 for a predetermined period of time, stops, displays an outside line hold state, and sends out a hold tone.

Next, base unit A1 uses the same communication channel to transmit a signal to slave unit B2 instructing it to display an outside line hold state and to send a hold tone. When the handset B2 receives this, it transmits a response signal to the base unit A1 for a predetermined period of time, stops, displays an outside line hold state, and sends a hold tone.

[0033] The master unit A1 and the slave units B1 and B2 repeat this operation thereafter. In other words, handset B1 and handset B2 alternately use the same transmitting and receiving frequency in a time-sharing manner to
1 and communicates that the outside line is on hold.

If, for example, an operation is performed to take an outside line on handset B2 while transmitting that the outside line is on hold by repeating the above operation, then when it is time for handset B2 to respond, handset B2 A signal indicating that an outside line will be taken is transmitted to base unit A1.

When base unit A1 receives this signal, it first transmits to slave unit B1 a signal indicating the end of the outside line hold state. When the handset B1 receives this end signal, it shifts from the communication channel it was using until then to a standby state on the control channel. Furthermore, base unit A1 next transmits a signal to slave unit B2 indicating that the current communication channel will be used regularly. When the handset B2 receives this signal, it constantly outputs radio waves at the transmission frequency of the communication channel, and constantly receives the radio waves at the reception frequency of the communication channel.

Thereafter, the base unit A1 releases the outside line hold state and connects the outside line to the wireless section 8. As a result, slave unit B
2, it becomes possible to make an outside line call.

In other words, the external line has been transferred from handset B1 to handset B2.

[0038]

[Effects of the Invention] In the outside line transfer method of the cordless telephone according to the present invention, when one handset that is currently talking to an outside line performs a specific hold operation, the base phone puts the outside line on hold and then transfers this one call. If a channel is repeatedly assigned to each slave unit in sequence by time division, and another slave unit performs an operation to release hold in this state, when the time for which the call channel has been assigned to itself has come, the hold status will be canceled. When the call is released, a communication path is formed between another handset and the outside line, so even if the base unit has only one wireless unit,
It becomes possible to transfer external lines from one handset to another handset. Further, since the base unit only needs to have one wireless unit, the base unit can be made smaller and lower in cost.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the electrical configuration of a base unit of a cordless telephone according to the present invention.

FIG. 2 is a block diagram showing the electrical configuration of a handset of the cordless telephone according to the present invention.

FIG. 3 is a block diagram showing the electrical configuration of a base unit of a conventional cordless telephone.

FIG. 4 is a block diagram showing the electrical configuration of a handset of a conventional cordless telephone.

[Explanation of symbols]

1 Receiving section 2 Transmission section 3 Control section 8 Radio section A1 Base unit B1, B2　Slave unit

Claims (1)

[Claims] Claim 1: In a cordless telephone comprising a base unit connected to a telephone line and a plurality of slave units each connected to the base unit via a wireless line, the base unit includes one wireless unit. By installing the base unit, the base unit and each of the slave units are connected through one call channel, and when one slave unit that is talking to an outside line performs a specific hold operation, the base unit and each of the slave units are puts an outside line on hold, and then repeatedly allocates this one call channel to each handset in turn by time-sharing, and in this state, when another handset performs an operation to release the call from hold, the call channel is This outside line transfer system for a cordless telephone is characterized in that when the time allotted to the cordless telephone comes, the hold state is released and a communication path between another handset and the outside line is formed.