JP2002044699A - Key telephone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a response to a call interrupt incoming even when the call interrupt incoming occurs at a line wire of a line wire transfer state. SOLUTION: An interrupt incoming control means 15B is provided in a main control unit 15 of a main device 1. When the call interrupt incoming to a call originating side line wire B of the line wire transfer state is detected and an interrupt incoming response is allowed from the other party B of a transfer destination, the wire B and an incoming side line wire A are temporarily held in the main device, the destination is called from a line wire C of an alternate capable of call originating, connected to the incoming side line wire A. A hooking signal is sent to the wire B in response to a responding operation of a slave unit corresponding to the incoming notification of the call interrupt incoming, and the wire B is connected to its slave unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone apparatus, and more particularly, to a key telephone apparatus using a call interruption receiving service provided from a network.

[0002]

2. Description of the Related Art In a general telephone network, when an incoming call is received from another party on a telephone line during a call, a predetermined notification signal is transmitted to the telephone line to interrupt the call to the user during the call. During a call (so-called call waiting service). When using this service with a key telephone device, for example, by performing a hooking operation in response to an incoming call during a call,
The other party of the original call is held on the network side, the interrupt side is switched and connected, and the call with the interrupt side can be started. Also,
In accordance with the subsequent hooking operation, either the interruption side or the original destination can be alternately switched and selected.

As one of the functions of the key telephone apparatus, there is an outside line transfer function for transferring an incoming call to a predetermined destination. This outside line transfer function, when there is an incoming call to the called side outside line, sends an outside line to a predetermined transfer destination using a calling side outside line different from the called side outside line, and according to the transfer destination response, This is a function of connecting the calling side external line with the key telephone apparatus, thereby forming a call between the source of the called side external line and the transfer destination of the calling side external line. This outside line transfer function is used when the user cannot answer the incoming call, such as when he / she is away.

[0004]

However, in such a conventional key telephone device, when an incoming call is interrupted during a call to a called-side external line in an outside-line transfer state, the calling-side external line is transmitted by a voice signal from the network side. Although the occurrence of a call interruption during a call is notified to the transfer destination, the transfer destination or the slave unit of the key telephone apparatus cannot respond to the call interruption during the call. This means that when responding to a call interruption call, it is necessary to send a hooking signal to the external line on which the call interruption was received, but in the case described above, the transfer destination directly accommodates the called side external line. This is because a hooking signal cannot be transmitted from the transfer destination to the destination external line. Further, even if there is a handset capable of responding to the call interruption call, the call interruption call is not displayed in the outside line transfer state, and there is no method for responding. The present invention is intended to solve such a problem, and provides a key telephone apparatus capable of responding to an interruption during a call even if an interruption during a call occurs to an outside line in an outside line transfer state. It is intended to be.

[0005]

In order to achieve the above object, a key telephone apparatus according to the present invention is connected to a main apparatus for accommodating a plurality of telephone lines as external lines, and to an extension of the main apparatus. If an incoming call from any of these external lines is detected, the other external line that is different from the incoming external line is used as the outgoing external line to call the transfer destination and connect to the external line. A button telephone device for performing a transfer, wherein an interrupt control means of the main device detects an interrupted incoming call during a call on a calling external line in an external line transfer state, and thereafter, a predetermined signal indicating permission of an interrupted incoming response from a transfer destination. If a signal is detected, the called party's outside line and the calling party's outside line are held in the main unit, the transfer destination is called from a possible alternative outside line, and the held called side outside line is recaptured and the alternate outside line is recalled. When you connect In response to the operation of the slave unit responding to the incoming call notification of the call interruption call, the held calling line is recaptured and a hooking signal is transmitted to connect the calling line to the answering slave unit. It is like that. At this time, when connecting the alternative external line to the called-side external line, the connection may be made after confirming that the transfer destination has answered the call from the alternative external line.

In the interrupt control means, when there is no alternative external line, the calling side external line is changed in response to a response operation of the slave unit before a predetermined slave unit response waiting period elapses from the notification of the incoming call interruption interrupt. After re-capturing and sending the hooking signal, the calling party's external line is connected to the answering slave unit, a hooking signal is sent to the calling party's outside line in response to the end of the call by the answering slave unit, and then the receiving side outside line is re-established. You may make it capture and connect with a transmission side outside line. Also, if there is no alternative outside line and no response operation of the slave unit is detected before the elapse of a predetermined slave unit response waiting period from the incoming call notification of the interrupt during call, the outside line of the calling side is re-captured. After sending the hooking signal, it notifies the other party that the slave unit is calling, and after sending the hooking signal to the calling party's outside line, recaptures the called party's outside line and reconnects to the calling side's outside line. You may make it connect.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a key telephone apparatus according to one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes two or more telephone lines (external lines) 11A to 11
Main devices connected to M and 2A to 2N are slave units (key telephones) connected to main device 1 via extension transmission line 3.

In the main unit 1, reference numeral 12 denotes a telephone line 11A.
An external line I / F unit 13 for terminating control of the slave units 2 (2A to 2N) via an internal line transmission line 3
F unit 14 is an exchange processing unit for exchanging and connecting external line I / F unit 12 and internal line I / F unit 13, 15 is a main control unit that controls the entire apparatus, and 16 is a unit necessary for control by main control unit 15. A main storage unit for storing various control information, 17 is a telephone line 11A to 11
An information receiving unit 18 receives various information transmitted from the network side via M, and an audio processing unit 18 outputs an audio signal such as a hold tone, a PB signal, or various audio messages. The main control unit 15 is provided with an external line transfer control unit 15A that provides an external line transfer function, and an interrupt incoming call control unit 15B that controls a response to an incoming call in response to an incoming call during a call.

The slave units 2 (2A to 2N) have substantially the same configuration. Reference numeral 21 denotes a transmission I / F unit for performing data transmission with the main unit 1 via the extension transmission line 3, and reference numeral 22 denotes a transmission I / F. F part 2
1 is a speech circuit that decodes the voice data received in 1 into a voice signal and outputs the voice signal from a handset or a speaker (not shown), encodes voice input from the handset into voice data, and outputs it to the transmission I / F unit 21 , 23 are slave unit control units for controlling each unit of the slave unit 2. Reference numeral 24 denotes an operation input unit for detecting operations of various keys such as a flash key, a hook switch, and a dial key; 25, a display unit for displaying various information in characters and patterns; and 26, control information used for processing of the slave unit control unit 23. Is stored in the memory. In the display unit 25,
Based on the data transmission with the main device 1, the slave unit control unit 23 displays, for example, an incoming call to outside line, a hold alarm, and the like in characters and patterns.

Next, referring to FIG. 2, as an operation of the key telephone apparatus according to the first embodiment of the present invention, a process in the case where a call interruption incoming call is generated for a destination external line in an external line transfer state. Will be described. FIG. 2 is a flowchart showing the interrupt control processing for the called-side external line. If the user operates the slave unit and the user sets an external line transfer in advance for a predetermined telephone line, the main control unit 15 uses the information for designating the telephone line to which the incoming call is to be transferred, that is, the external line on the receiving side, for the external line transfer. Information that specifies the telephone line, that is, the calling line,
External line transfer setting information including information designating a transfer destination telephone number and the like is registered in the main storage unit 16.

When an incoming call is detected on an arbitrary telephone line at the external line I / F unit 12 of the main unit 1, the main control unit 15 refers to the external line transfer setting information registered in the main storage unit 16,
It is determined whether or not external line transfer is set for the telephone line, that is, the external line on the called side. If external line transfer is set, external line transfer processing is performed using the external line transfer control unit 15A. At this time, the outside line transfer control means 15A captures the calling outside line specified by the outside line transfer setting information, and dials out the telephone number of the transfer destination also specified by the outside line transfer setting information. The exchange processing unit 14 responds to the response from the transfer destination.
To connect the communication path between the called-side external line and the calling-side external line to form an outside-line transfer state. As a result, the transfer destination of the calling-side external line responds to the call from the source of the receiving-side external line, and the two parties communicate with each other.

In the outside line transfer state, when a call is made from the interrupt side to the outside line on the calling side, the network side notifies the main unit 1 via the outside line on the calling side of the interruption during the call. FIG. 3 shows a state in which a call interruption during call has occurred. Network 4 has destination A (4A) and destination B
(4B) and the other party C (4C) are connected, and the other party A and the other party B are making a call 51 via the main device 1 in an external line transfer state. At this time, the destination A corresponds to the transmission source, and the telephone line 11A becomes the outside line A on the receiving side when viewed from the main apparatus 1. The other party B corresponds to the transfer destination and the telephone line 11
B is the outside line B on the transmitting side when viewed from the main device 1.

In this state, when a call 52 from the destination C to the outside line B is made, an interruption incoming notification is made from the network 4 to the main apparatus 1 via the outside line B. Usually, this notification is given by a voice signal from the network side. Main device 1
The information receiving unit 17 detects an incoming call interruption during a call in response to the notification. Thereafter, a signal such as a hooking signal, a dial pulse signal, or a PB signal is transmitted from the other party B to indicate a permission of the interrupted incoming response,
When the information is detected by the information receiving unit 17 of the main device 1, the destination B
It is determined that the interrupted incoming call response is permitted, and the main control unit 15 starts the interrupt control processing of the incoming call side external line in FIG. 2 by the interrupted incoming call control means 15B.

First, an incoming call notification of a call interruption call is made to a slave unit which can respond to the call interruption call reception (step 100), and the exchange processing unit 14 is controlled to control the outside line in the outside line transfer state. A and the relay connection of the outside line B are temporarily disconnected, and FIG.
As shown in (1), the main devices 1 individually put the devices on hold (step 101). Note that the answering handset is a handset that is ready to answer an incoming call or a handset that does not prohibit an incoming call response in the system settings of the key telephone device, and specifically, is not used. Examples include a child device in an idle state and a child device in which an incoming call response to an outside line in which a call interruption during a call has occurred is not prohibited.

Next, it is checked whether or not there is a vacant outside line that can be transmitted (step 102). If there is (step 102: YES), the following steps 103 to 103 are performed.
At 108, the outside line transfer state is reconstructed using the free outside line and the response to the call interruption incoming call using the calling side outside line is controlled. First, the voice processing unit 18 and the exchange processing unit 14 are controlled to send an incoming call waiting instruction message 53 to the outside line B on hold, so that the main device 1 can call the destination B as the transfer destination. Since the call is made again, a notification is given to end the call once and wait (step 103). As a result, the other party B ends the call.

Subsequently, the outside line I / F section 12 is controlled to capture an empty outside line, in this case, the telephone line 11C, ie, outside line C (alternate outside line), and call the other party B (step 1).
04), the exchange processing unit 14 is controlled to relay-connect the outside line A and the outside line C (step 105). As a result, FIG.
As shown in the figure, after the destination B answers, the outside line A, the main unit 1,
Via the outside line C, the calling party A and the forwarding party B
Is formed, and the call 51 in the original external line transfer state is reconstructed. At this time, after confirming that the destination B has answered the call from the outside line C, the outside line C and the outside line A may be connected.

Next, if there is a response operation at one of the slave units that have received the incoming call notification at step 100, for example, the slave unit A (2A) (step 106), the network 4 responds to the end of the call of the destination B The outside line B from which the busy tone (BT) is being transmitted is reacquired and a hooking signal is transmitted (step 10).
7) Control the exchange processing unit 14 to connect the outside line B to the slave unit A that has responded (step 108). As a result, FIG.
As shown in the figure, the outside line B is connected to the other party C on the interruption side via the network 4, and as a result, the slave A responds to the call interruption during the call. 54 are formed.

As described above, when an interrupted incoming call is detected during a call on the outside party B connected to the transfer destination party in the outside line transfer state, that is, the outside party B to which the other party B is connected, the free outside line C is used. B, connects the outside line A and the outside line C on the calling side, reconstructs the original call, and sends a hooking signal to the outside line B in response to the response of the slave unit A to the notification of the incoming call interruption during the call. And connected to the slave unit A to respond to the interrupted call during the call. Therefore, even when an interrupted call is received during a call to the calling side external line in the outside line transfer state, the original call is continued. Can respond to interrupted calls during a call.

Next, with reference to FIG. 7, a description will be given of the interrupt control processing in the case where there is no empty outside line in step 102. FIG. 7 is a flowchart showing the interrupt control processing for the called-side external line (when there is no empty line). First, a timer for checking the slave unit response waiting period is started (step 110). Step 111,
The process proceeds to a response wait loop process consisting of 112. In this response waiting loop, it is checked whether or not there has been an incoming response operation to the incoming call during the call in the slave unit (step 11).
1) If there is no incoming response operation, it is checked whether the timer has expired (step 112), and the response waiting loop processing is continued until the timer expires.

In step 111, for example, the slave unit A
When the incoming call response operation is performed in (2A) (step 1)
11: YES), the external line I / F unit 12 is controlled to
Then, the external line B in the hold state is re-captured, a hooking signal is transmitted, and the exchange processing unit 14 is controlled to connect the external line B to the slave unit A. As a result, as shown in FIG. 8, the other party B is held on the network 4 and the other party C is connected to the outside line B. As a result, the slave unit A responds to the call interruption call during the call. A call 55 between C and handset A is formed. Thereafter, in response to the end of the call 55 by the slave A (step 114: YES), the external line I / F unit 12 is controlled to send a hooking signal to the external line B (step 11).
5), the exchange processing unit 14 is controlled to relay-connect the outside line A and the outside line B held in the main unit 1 (step 11).
6). Thereby, as shown in FIG. 9, the original call 51 in the outside line transfer state is reconstructed.

Step 11 of the response waiting loop process
If it is confirmed in step 7 that the timer has expired (step 117: YES), the external line I / F unit 12 is controlled to re-capture the external line B in the hold state in the main unit 1 and transmit a hooking signal ( In step 118), the calling message 56 is sent to the outside line B (step 119). As a result, as shown in FIG. 10, the other party B is held on the network 4 and the other party C is connected to the outside line B.
To be notified. After transmitting the calling message 56, the process proceeds to step 115. As a result, as shown in FIG. 11, the original call 51 in the outside line transfer state is reconstructed, and the other party C is put on hold in the network 4.

As described above, when there is no vacant outside line,
A call 55 is formed in response to the call interruption call in response to the incoming call response in the handset A, and the original call 51 is reconstructed in an external call state according to the end of the call. Even when there is no call, the original call can be temporarily interrupted in response to the response of the slave unit to respond to the call interruption during the call. Also, if there is no response from the slave unit for a predetermined slave unit response waiting period or longer,
After notifying the calling party C of the interrupting side in response to the call interrupting incoming call and notifying the interrupting party C, the original call 51 was reconstructed, so that there was no available outside line and the slave unit could not answer. Even in this case, the original call can be temporarily suspended to respond to the call interruption during the call.

[0023]

As described above, according to the present invention, an interruption incoming call during a call is detected on an originating external line in an external line transfer state.
If the transfer destination allows interrupted call answering, the transfer destination is called from an alternative external line that can make a call and connected to the called party's external line. In this case, a hooking signal is sent out after reacquiring the calling side external line, and the calling side external line is connected to the responding slave unit. However, it is possible to respond to an interrupted call during the call while continuing the original call.

[Brief description of the drawings]

FIG. 1 is a block diagram of a key telephone device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an interrupt control process.

FIG. 3 is an explanatory diagram showing a state in which an interrupt during a call has occurred;

FIG. 4 is an explanatory diagram illustrating a state in which a call waiting instruction message is transmitted.

FIG. 5 is an explanatory diagram showing a state in which an original call is re-formed.

FIG. 6 is an explanatory diagram showing a state in which a response is made to a call interruption interrupt.

FIG. 7 is a flowchart showing an interrupt control process (when there is no empty outside line).

FIG. 8 is an explanatory diagram showing a state in which a response is made to an incoming call during a call;

FIG. 9 is an explanatory diagram showing a state in which an original call is re-formed.

FIG. 10 is an explanatory diagram illustrating a state in which a calling message is transmitted.

FIG. 11 is an explanatory diagram showing a state where an original call is re-formed.

[Explanation of symbols]

1 ... main device, 2, 2A-2N ... slave unit, 11A-11M ...
Telephone line, 12: external line I / F section, 13: internal line I / F section,
14: exchange processing unit, 15: main control unit, 15A: external line transfer control means, 15B: interrupt reception control means, 16: main storage unit, 17: information reception unit, 18: voice processing unit, 21: transmission I / F unit, 22: communication circuit, 23: slave unit control unit, 24:
Operation input unit, 25 display unit, 26 memory, 3 extension transmission line, 4 network, 4A destination A, 4B destination B, 4C
... the other party C.

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (4)

[Claims] 1. A main unit for accommodating a plurality of telephone lines as external lines, and a slave unit connected to an extension of the main unit. When an incoming call from any of these external lines is detected, A key telephone device that performs external line transfer by calling and connecting to a transfer destination using another external line different from the called side external line as the calling side external line, and calling the main unit with the calling side external line in the external line transfer state If a middle interrupt incoming call is detected, and then a predetermined signal indicating permission of an interrupted call response from a transfer destination is detected, the incoming call outside line and the outgoing call outside line are held by the main device, and an alternate call can be made. The transfer destination is called from an outside line to re-capture the held outside line held and connected to the alternative outside line. Please Wherein the originating outside-line re-captured by sending a hooking signal, key telephone system characterized in that it comprises an interrupt control means for connecting the originating outside-line and its reply handset. 2. The key telephone apparatus according to claim 1, wherein the interrupt control unit confirms that the transfer destination has responded to the call from the alternative external line, and then determines whether the alternative external line and the receiving-side external line are connected. A key telephone device. 3. The key telephone apparatus according to claim 1, wherein said interrupt control means, when said alternative outside line does not exist, before a predetermined handset response waiting period elapses from the incoming call notification of the call incoming interrupt. In response to the response operation of the slave unit, the originating outside line is re-acquired and a hooking signal is transmitted, and then the calling side external line and the answering slave unit are connected to each other. Transmitting a hooking signal to the calling side outside line, and reacquiring the called side outside line to connect to the calling side outside line. 4. The key telephone apparatus according to claim 3, wherein said interrupt control means does not include said alternative external line and before a predetermined slave unit response waiting period elapses from an incoming call notification of said call incoming interrupt. If no response operation of the slave unit is detected
After re-acquiring the calling side outside line and sending a hooking signal, a notification is made to the other party that the slave unit is calling, and after sending the hooking signal to the calling side outside line after this notification, the incoming call is terminated. A key telephone apparatus, wherein the outside line is reacquired and connected to the outside line.