JPH11234373A - Communication device and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To temporarily hold both the other parties without communicating with them at the time of receiving a calling signal from another opposite party during communication with one opposite party by using a transmitter-receiver with respect to a communication device. SOLUTION: When a CPU receives a calling signal from another opposite party (S2: YES) during communication with one opposite party (S1), the CPU shows the telephone number of the other opposite party on a display panel (S4). And the CPU once suspends the communication of both the opposite parties and makes them to be in holding states (S7) when a user presses a hook switch (S5: YES). When a hold release switch is not pressed by the user (S8: NO) and when the hook switch is pressed again (S9: YES) after the speech communication is made to be in the holding state, the CPU starts speech communication processing with the other opposite party (S11) after switching the speech communication opposite parties (S10).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device having a handset such as a cordless telephone capable of communicating with an arbitrary communication terminal via a transceiver, and a program for operating the communication device. And a storage medium storing the information.

[0002]

2. Description of the Related Art Heretofore, a typical communication device of this type is a cordless telephone. In a cordless telephone, a handset that transmits and receives voice signals and the like via a telephone line and exchanges information with the telephone body wirelessly,
It is held as a slave phone at a predetermined position on the telephone body or in a charger or the like separate from the telephone body. Such handsets, especially those used as handset phones,
A numeric keypad for inputting the telephone number of the other party and a display panel for displaying the input telephone number and the like are provided at predetermined locations. In addition, such a handset is provided with a hook switch, and this hook switch is set to one.
It is possible to start and end a call by pressing the button twice. For example, if it is desired to terminate the telephone call with the other party and disconnect the line, pressing the hook switch sends a call termination signal to the exchange and disconnects the line.

On the other hand, as one of services provided through a telephone line, when a call is received from another party during a call with one party, a ring tone is transmitted over the call tone. There is a so-called call waiting service. In the handset provided with the call waiting service, when a call signal from another party is received during a call with one party, the other party is switched by pressing the hook switch once. I have.

In recent years, another service provided via a telephone line is a service for notifying a telephone number of a called party at the time of calling. When a call signal is received from the destination, the telephone number of the destination is displayed on the display panel. In this way, the user who receives a call from the other party can determine whether or not to talk with the other party by checking the telephone number of the other party displayed on the display panel. .

[0005]

However, in the conventional cordless telephone described above, when receiving a call waiting service and a number notification service, there are the following problems.

In other words, in a handset used as a cordless phone, particularly as a handset phone, when a call is received from another party while talking to one party using the handset, the other party receives the call signal. In order to confirm the destination telephone number, the display panel must be in a position where it can be viewed. For this reason, the handset must be temporarily separated from the vicinity of the face while talking with the other party, and the other party's telephone number must be confirmed on the display panel. This causes an idle time in the call, and the call is confused for the other party who is talking first. In other words, whether the other party's telephone number is confirmed on the display panel while the caller is already in a call with the other party on the other side, or whether the other party is forcibly switched without confirming the other party's telephone number There was only one choice.

[0007] The present invention has been proposed in view of the above points, and during communication with one destination using a transceiver,
Provided is a communication device capable of temporarily holding a call signal without receiving communication with both destinations when receiving a call signal from another destination, and a storage medium storing a program for operating the communication device. The purpose is to do.

[0008]

According to a first aspect of the present invention, there is provided a communication apparatus including a transmitter / receiver for transmitting / receiving an arbitrary destination communication terminal via a communication line. A display panel capable of displaying identification information assigned to each communication terminal is provided at a predetermined portion of the transceiver, and when communicating with one communication terminal, a communication from another communication terminal is performed. When a ring signal is received,
A communication device capable of switching a communication partner from the one communication terminal to the another communication terminal according to a predetermined switching operation, and during communication with the one communication terminal, A destination display control means for displaying, on the display panel, identification information of the other destination communication terminal when receiving a call signal from the another destination communication terminal; and communicating with the one destination communication terminal. And a suspend control means for temporarily suspending communication with the two other parties to suspend the communication with the two other parties in response to a predetermined suspend operation when receiving a call signal from the another destination communication terminal; Holding release canceling means for determining whether or not a predetermined hold releasing operation required to release the hold state has been performed after the communication with the two parties has been put on hold by the means; and By means And a communication restart control means for restarting communication with any one of the one communication terminal or the other communication terminal when it is determined that the call release operation has been performed. .

According to this communication apparatus, when a call signal is received from another communication terminal during communication with one communication terminal, identification information of the other communication terminal is displayed on the display panel. In addition to being displayed, it is possible to temporarily hold without performing communication with both parties by performing a predetermined hold operation, and after holding, communication with one of the other parties is performed by a predetermined hold release operation Can be resumed.

[0010] The communication device may have any form in which a communication device main body and a transceiver are separately provided, or the transceiver itself is the communication device itself. For example, various types of telephones and mobile phones are suitable.

[0011] The communication line may be a public telephone line or a dedicated line, and may be a wired or wireless line.

As the display panel, for example, a display such as an LCD capable of displaying characters is optimal, but the present invention is not limited to this, and any other display capable of displaying identification information, such as a segment display panel using LEDs, can be used. Display panel.

As the identification information, the telephone number of the other party notified by the service provided via the telephone line is suitable, but other information may be used.

Each of the switching operation, the hold operation, and the hold release operation can be realized by a plurality of key switches provided for each operation. Depending on the operation sequence of one key switch, for example, the switching operation and the hold operation may be realized by pressing the same key switch.

A communication device according to a second aspect of the present invention is the communication device according to the first aspect, wherein the hold release determination means performs communication as the predetermined hold release operation. It is determined whether or not a re-selection operation for selecting a partner or a switching operation for switching a communication partner has been performed, and the communication resumption control unit determines that the re-selection operation has been performed by the hold release determination unit. While the communication with the other communication terminal is restarted, if the hold release determination means determines that the switching operation has been performed, the communication with the other communication terminal is started.

According to this communication device, in addition to the effect of the communication device according to the first aspect, after the communication with both parties is suspended, the communication with the communication partner that was communicating according to the re-selection operation is performed. Communication is resumed, and in response to the switching operation, communication with the called party is started,
A desired communication partner can be selected according to the operation procedure after the communication is suspended.

Further, a communication device according to a third aspect of the present invention is the communication device according to the first or second aspect, wherein the transceiver is a grippable handset incorporating a microphone and a speaker. is there.

According to this communication device, in addition to the effects of the communication device according to claim 1 or 2, the transceiver is a grippable handset incorporating a microphone and a speaker. The present invention can be effectively used in, for example, various types of telephones and mobile phones having a receiver.

A communication device according to a fourth aspect of the present invention is the communication device according to the third aspect, wherein the handset is a cordless type that exchanges information with a communication device main body in a wireless manner.

According to this communication device, in addition to the effect of the communication device according to the third aspect, since the handset is of a cordless type for exchanging information with the main body of the communication device in a wireless manner, such a cordless transmission is provided. The present invention can be effectively used, for example, in a handset phone provided with a receiver, which is held in a charger separate from the telephone body.

According to a fifth aspect of the present invention, there is provided the communication apparatus according to the third or fourth aspect, wherein the handset is connected to the telephone via the microphone and the speaker without being held. It is possible, when a call is in a state where the handset is not held, the holding control means, without performing the holding control, immediately after a predetermined switching operation is performed, the holding control means and the other communication terminal Communication is starting.

According to this communication device, in addition to the effects of the communication device according to claim 3 or claim 4, when a call is made without picking up the handset, another call is made when the switching operation is performed. Can be used effectively in a situation where a so-called speakerphone function is used as a function of, for example, a handset phone.

According to a sixth aspect of the present invention, there is provided a storage medium including a transceiver for transmitting and receiving an arbitrary destination communication terminal via a communication line, and identification information assigned to each destination communication terminal. Is provided at a predetermined portion of the transceiver, and when communicating with one communication terminal, receiving a call signal from another communication terminal, responding to a predetermined switching operation. A storage medium storing a program for controlling a communication device capable of switching a communication partner from the one communication terminal to the other communication terminal, wherein the one communication terminal During communication with, when a call signal from the other communication terminal is received, a destination display control program for displaying the identification information of the other communication terminal on the display panel, Serial in communication with one of the destination communication terminal,
When a call signal is received from the other communication terminal, a hold control program for temporarily interrupting communication with the two other parties to a hold state in accordance with a predetermined hold operation, and the hold control After the communication with the other party is put on hold based on the program, a hold release determination program to determine whether a predetermined hold release operation required to release the hold state has been performed, When it is determined that a predetermined hold release operation has been performed based on the hold release determination program, the communication with one of the one communication terminal or the other communication terminal is restarted. And a communication restart control program.

According to this storage medium, the operation of the communication device according to the first aspect can be realized by operating the CPU based on the stored program.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a schematic explanatory view showing a use form of a telephone equipped with a cordless handset as an example of a communication device according to the present invention. Telephone body A for transmitting and receiving voice signals
And a handset C held as a slave phone in a charger B separate from the telephone main body A. Note that the telephone body A in the present embodiment has the same form as a conventionally known parent telephone capable of exchanging information with a slave telephone by a wireless method. It does not have a handset for making a call, but of course it may have such a numeric keypad or handset. For example, the telephone body A may be a facsimile apparatus capable of transmitting and receiving image information. Since such a telephone body A has the same function as a conventionally known base telephone, detailed description thereof will be omitted.

The charger B has a terminal (not shown) for supplying power from the home power supply to the handset C at a predetermined location, and the handset C is held by the charger B. In this example, power is constantly supplied from the charger B to the handset C through the terminal. When the handset C is picked up and detached from the charger B, the connection with the terminal is released, whereby the power supply to the handset C is stopped, and at the same time, an off-hook state in which communication is possible is established.

The handset C is provided with a microphone section C1 and a speaker section C2 for talking with the other party. Further, at a predetermined portion on the same side, a key switch group C3 including a numeric keypad or the like for inputting a destination telephone number or the like is provided. A display panel C comprising an LCD or the like for displaying the destination telephone number
4 are provided. A key switch that performs a specific function of the key switch group C3 includes a hook switch C3a for setting an off-hook state or an on-hook state when talking or ending a call using the handset C.
There is a hold release switch C3b for releasing the hold when the call is put on hold, as will be described in detail later. When talking using such a handset C, it is possible to talk without picking up the handset C, and the handset C has a so-called speakerphone function.

In the telephone line 21 connected to the telephone in such a usage form, a service for notifying the telephone number of the other party as identification information at the time of calling is added as a service provided by the exchange. In a telephone that has received a special number notification service, the telephone number of the other party can be displayed when calling from the other party. Displaying the other party's telephone number at the time of such a call is called a number display. That is, when a call is received from the other party, the telephone number of the other party is displayed on the display panel C4 of the handset C by the number display function, and the user displays the telephone number on the display panel C4. By confirming the telephone number of the called party, it is possible to predict whether or not to talk with the called party.

As another service provided by the exchange,
When a call is received from another party during a call with one party, there is a so-called call waiting service in which a ringing tone is transmitted in addition to the call tone. The telephone according to the present embodiment is also provided with the call waiting service. When the handset C is used to talk with another party and a call signal from another party is received, the hook switch C3a is used. By pressing once, the communication partner can be switched.

FIG. 2 is a circuit block diagram of the handset C shown in FIG.
AM2, ROM3, EEPROM4, gate array 5,
DMAC 6, audio input unit 11, audio output unit 12, operation unit 13, display unit 14, information exchange unit 15, and power supply unit 17
It is comprised including. CPU1, RAM2, RO
M3, EEPROM 4, gate array 5, and DMA
C6 are mutually connected by a bus line. The bus lines include an address bus, a data bus, and a control signal line. The gate array 5 includes a voice input unit 11, a voice output unit 12, an operation unit 13, a display unit 14, an information exchange unit 15,
And the power supply unit 17 are connected. In addition, telephone line 2
The telephone unit A is provided with an NCU connected to the network control unit 1 for controlling the network and a communication circuit for transmitting and receiving voice signals via the telephone line 21.
The handset C can be controlled wirelessly.

The CPU 1 controls the entire handset C.
The RAM 2 is provided with a power backup by a battery (not shown) such as a rechargeable battery built in the handset C, and stores various data such as redial data and voice-recorded voice data. The ROM 3 stores various programs and data such as initial setting values. EEP
The ROM 4 stores various flags, registration data, and the like. The gate array 5 functions as an input / output interface of the CPU 1. The DMAC 6 writes and reads data to and from the RAM 2.

The voice input unit 11 includes a microphone or the like, and outputs a voice uttered by the user to the information exchange unit 15 as an analog signal. The audio output unit 12 includes a speaker or the like, and outputs an audio signal of the other party during a call as an audible sound. The operation unit 13 includes a key switch group and the like, and includes a numeric keypad for inputting a telephone number, a hook switch C3a, and the like, and outputs an operation signal according to a user's operation. The display unit 14 includes a display panel C
4, and has a number display function by displaying the telephone number of the other party under the control of the CPU 1. The information exchange section 15 includes an antenna for wirelessly transmitting and receiving various signals, and transmits and receives voice signals and control signals exchanged with the telephone main body A. The power supply unit 17 includes a power supply terminal serving as a contact point with the charger B, a rechargeable battery, and the like, and supplies power to the entire circuit of the handset C.

The main point will be described.
Transmits a call signal and a voice signal from the other party received via the telephone line 21 to the information exchange unit 15 of the handset C by wireless. Further, the telephone body A receives the telephone number of the other party in addition to the calling signal and receives the information (hereinafter, referred to as “Cola I”).
D ”), and also transfers the destination telephone number to the information exchange unit 15. And handset C
When a call is received from another party during a call using, a ringing tone is output from the voice output unit 12 over the call tone, and the telephone number of the other party is displayed on the display panel C4. At this time, when the call partner is switched using the call waiting function, pressing the hook switch C3a once puts the call on hold with the called party and another called party. Then, after confirming the telephone number of the other party on the display panel C4, the user can determine whether or not to switch to a call with the other party. Specifically, while the other party is switched by pressing the hook switch C3a again, the call with the other party during the call is continued without switching the other party by pressing the hold release switch C3b on the operation unit 13. Is done.

That is, the CPU 1 operates on the basis of the program stored in the ROM 3 so as to receive a call signal from another communication terminal during communication with another communication terminal. Destination display control means for displaying the identification information of the destination communication terminal on the display panel,
During communication with one communication terminal, if a call signal from another communication terminal is received, the communication with the other communication terminals is temporarily suspended according to a predetermined holding operation to temporarily suspend communication. Control means, and after the communication with the other party is put on hold by the hold control means, hold release determination means for determining whether or not a predetermined hold release operation required to release the hold state has been performed. A communication resumption control means for resuming communication with one of the one communication terminal or another communication terminal when it is determined that the predetermined hold release operation has been performed by the hold release determination means. Has been realized.

The ROM 3 includes a transmitter / receiver for transmitting / receiving to / from an optional communication terminal via a communication line, and a display panel capable of displaying identification information assigned to each communication terminal has the transmission / reception device. It is provided at a predetermined portion of the device, and when communicating with one communication terminal, receiving a call signal from another communication terminal, in response to a predetermined switching operation, from one communication terminal, A storage medium storing a program for controlling a communication device capable of switching a communication partner to another communication terminal, wherein during communication with one communication terminal, another communication terminal When a call signal is received, a destination display control program for displaying the identification information of the other destination communication terminal on the display panel, and another destination communication terminal during communication with one destination communication terminal. When receiving a call signal from end, and a hold control program for according to a predetermined hold operation, the communication once interrupted pending the both party,
After communication with both parties is put on hold based on the hold control program, a hold release determination program for determining whether or not a predetermined hold release operation required to release the hold state has been performed. When it is determined that the predetermined hold release operation has been performed based on the hold release determination program, communication restart for restarting communication with either the other communication terminal or the other communication terminal. A storage medium including a control program is realized.

Next, the essential points of the operation of the handset C having the above configuration will be described with reference to the flowchart shown in FIG.

FIG. 3 is a flow chart showing the procedure for switching the communication partner of the handset C used as the handset phone. As shown in FIG.
It is assumed that a call process with one other party is being performed (S
1).

Then, the CPU 1 determines whether or not a call signal from another partner is received via the information exchange unit 15 during a call with one partner (S2).

When a call signal is received (S2: YE)
S), the CPU 1 determines whether or not a caller ID relating to another telephone number of the other party is added to the received call signal (S3).

When the caller ID is added to the calling signal (S3: YES), the CPU 1 causes the display panel C4 to display the received telephone number of the other party (S4). That is, the number display function is executed.

Next, the CPU 1 determines whether or not the user has pressed the hook switch C3a of the operation unit 13 once (S5).

When the hook switch C3a is pressed (S
5: YES), the CPU 1 determines whether or not the call state with the other party is a call state by the speakerphone function (S6), and when the call state is not the speakerphone state (S6: N).
O), the CPU 1 puts a state in which a call in which a call with both parties cannot be made is put on hold (S7). During the period in which the call is held, the user can check the display panel C4 to confirm the telephone number of another destination that is the source of the call signal.

Thereafter, the CPU 1 determines whether or not the user has pressed the hold release switch C3b of the operation unit 13 (S8), and also determines whether or not the hook switch C3a has been pressed again (S9).

If the hook switch C3a is depressed again (S9: YES) without the hold release switch C3b being depressed (S8: NO), the CPU 1 separates from the other party that was previously engaged in a call. The process is switched to a call process with the other party (S10). After the other party is switched, the CPU
1 restarts the call processing (S11) and ends this routine.

At S9, the hook switch C3a is again activated.
If is not pressed (S9: NO), the CPU 1 proceeds to S8
Then, the process of determining whether or not the hold release operation has been performed is repeatedly executed.

In S8, when the hold release switch C3b is pressed (S8: YES), the CPU 1 does not execute the process of switching the other party in S10, and the CPU 1 does not execute the process of switching to the other party that was previously talking. The state where the call is put on hold is released (S12). Thereafter, the CPU 1 jumps to S11 and resumes a call with one other party.

If it is determined in S6 that the telephone is in the speakerphone state (S6: YES), the CPU 1 immediately switches the call process without performing the process of holding the call in S7 (S13), and jumps to S11. Start a call with the other party.

If the hook switch C3a is not depressed in S5 (S5: NO), the CPU 1 returns to S1 and continues the communication process with one other party.

If no caller ID is added to the calling signal in S3 (S3: NO), CPU 1 determines whether or not the user has pressed down hook switch C3a in operation unit 13 once (S14). . When hook switch C3a is pressed (S14: YES), CP
U1 jumps to S13 and immediately switches the call process (S13). Conversely, if the hook switch C3a is not pressed (S14: NO), the CPU 1 returns to S1 and continues the call processing with one other party.

In S2, if a call signal from another party has not been received (S2: NO), CPU 1 returns to S2.
The process returns to 1 to continue the call processing with the other party.

Therefore, according to the telephone equipped with the handset C used as a slave telephone having the above configuration and operation, when a call signal from another partner is received during a call with one partner. The telephone number of the other party is displayed on the display panel C4, and the user who has confirmed the telephone number of the other party on the display panel C4 receives the hook switch C3.
By operating “a”, it is possible to temporarily suspend communication without performing communication with both parties. After that hold, if you want to continue the call with the other party on the previous call,
By operating the hold release switch C3b, the call with the other party can be resumed. When the other party is to be switched to another party, the other party can be operated by operating the hook switch C3a again. You can switch to resume the call.

In the present embodiment, the handset C used as a handset phone has the above-described functions. However, such a function may be provided in the telephone body A. In this case, the telephone body A controls various operations of the handset C by wireless information exchange.

As another embodiment, while the call is on hold, a voice such as "Please wait for a while" or a melody on hold may be transmitted to the other party under the control of the CPU 1.

[0055]

As described above, according to the communication apparatus of the first aspect of the present invention, when a call signal is received from another destination communication terminal during communication with one destination communication terminal. The identification information of the other communication terminal is displayed on the display panel, and by performing a predetermined holding operation, the communication can be temporarily suspended without performing communication with the other communication terminals. The communication with one of the other parties can be restarted by a predetermined hold release operation.

According to the communication device of the second aspect of the present invention, in addition to the effect of the communication device of the first aspect, after the communication with both parties is suspended, the communication device responds to the re-selection operation. Communication with the communication partner that was in communication is resumed, and communication with the called communication partner is started in response to the switching operation, so that the desired communication is performed according to the operation procedure after the communication is suspended. Communication partner can be selected.

According to the communication device of the third aspect of the invention, in addition to the effects of the communication device of the first or second aspect, in addition to the effects of the communication device, the transceiver can hold and transmit a microphone and a speaker. Since it is a handset, it can be effectively used in, for example, various types of telephones and mobile phones provided with such a handset.

According to the communication apparatus of the invention described in claim 4, in addition to the effect of the communication apparatus of claim 3, the handset is of a cordless type that exchanges information with the communication apparatus body in a wireless manner. Therefore, the present invention can be effectively used in a handset phone provided with such a cordless handset, for example, held in a charger or the like separate from the telephone body.

Further, according to the communication device of the invention described in claim 5, in addition to the effect of the communication device described in claim 3 or 4, in addition to the case where a telephone call is made without picking up the handset. At the time when the switching operation is performed, it is possible to make a call with another party, so that it can be effectively used in a situation in which a so-called speakerphone function is used as one function in, for example, a slave phone.

Further, according to the storage medium of the invention described in claim 6, the operation of the communication device described in claim 1 can be realized by operating the CPU based on the stored program.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a use form of a telephone provided with a cordless handset telephone as an example of a communication device according to the present invention.

FIG. 2 is a circuit block diagram of the handset C shown in FIG.

FIG. 3 is a flowchart showing a procedure for switching a communication partner of a handset C used as a slave phone;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 RAM 3 ROM 4 EEPROM 5 Gate array 6 DMAC 11 Audio input unit 12 Audio output unit 13 Operation unit 14 Display unit 15 Information exchange unit 17 Power supply unit A Telephone body B Charger C Handset C1 Microphone unit C2 Speaker unit C3 Key switch group C3a Hook switch C3b Hold release switch C4 Display panel

Claims (6)

[Claims] 1. A communication device comprising: a transceiver for transmitting and receiving an arbitrary communication terminal via a communication line; and a display panel capable of displaying identification information assigned to each communication terminal. Is provided at the site, and when receiving a call signal from another destination communication terminal at the time of communication with one destination communication terminal, in response to a predetermined switching operation, the one destination communication terminal transmits A communication device capable of switching a communication partner to the other communication terminal, further comprising: receiving a call signal from the another communication terminal during communication with the one communication terminal; Destination display control means for displaying the identification information of the destination communication terminal on the display panel, during communication with the one destination communication terminal, when a call signal from the another destination communication terminal is received, Predetermined hold In response to the operation, the hold control means for temporarily suspending the communication with the two other parties and holding the communication, and after the communication with the two other parties is put into the hold state by the hold control means, the hold state is changed. Hold release determining means for determining whether or not a predetermined hold release operation required for release has been performed; and if the hold release determination means determines that the predetermined hold release operation has been performed, the one destination communication A communication device, comprising: communication restart control means for restarting communication with a terminal or any one of the other communication terminals. 2. The on-hold release determining means determines whether or not a re-selection operation for selecting a communication partner who has been communicating or a switching operation for switching communication partners has been performed as the predetermined hold release operation. The communication resumption control means, when it is determined that the reselection operation has been performed by the hold release determination means, resumes communication with the one other communication terminal, and the switching operation is performed by the hold release determination means. The communication device according to claim 1, wherein when it is determined that the communication has been performed, communication with the another communication terminal is started. 3. The transceiver as claimed in claim 1, wherein the transceiver is a grippable handset incorporating a microphone and a speaker.
Alternatively, the communication device according to claim 2. 4. The communication device according to claim 3, wherein the handset is a cordless type that exchanges information with a communication device body in a wireless manner. 5. The telephone set according to claim 1, wherein the handset is capable of performing a call through the microphone and the speaker without being held, and when the handset is in a call state without being held,
5. The holding control unit according to claim 3, wherein without holding control, immediately after a predetermined switching operation is performed, communication with the another destination communication terminal is started. 6.
The communication device according to claim 1. 6. A transmission / reception device for transmitting / receiving to / from an arbitrary communication terminal via a communication line, and a display panel capable of displaying identification information assigned to each communication terminal is provided in the communication terminal. Is provided at the site, and when receiving a call signal from another destination communication terminal at the time of communication with one destination communication terminal, in response to a predetermined switching operation, the one destination communication terminal transmits A storage medium storing a program for controlling a communication device capable of switching a communication partner to another communication terminal, wherein said another communication terminal is communicating with said one communication terminal. Receiving a call signal from the other party, the other party's display control program for displaying the identification information of the other party's communication terminal on the display panel; and When a call signal is received from the other party's communication terminal, a hold control program for temporarily interrupting communication with both of the other parties to put them into a hold state according to a predetermined hold operation, based on the hold control program After the communication with the other party is put on hold, the hold release determination program for determining whether a predetermined hold release operation required to release the hold state has been performed, and the hold release When it is determined that a predetermined hold release operation has been performed based on the determination program, communication restart control for restarting communication with any one of the one communication terminal or the other communication terminal A storage medium characterized by including a program.