JP2004282338A - Telephone exchange - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a telephone exchange wherein no holding / callback / transfer is performed even when a hook flash signal not intended by a user of a telephone set connected to the telephone exchange is transmitted to the telephone exchange. <P>SOLUTION: The telephone exchange is configured to include a mode wherein when hook detection circuits 131a to 131n receive a hook operation with a time length within a prescribed time range and an operation discrimination means 16b discriminates that an analog telephone set 2 makes an external line speech or an extension speech and thereafter a hook operation with a time length of a prescribed time range by the analog telephone set 2 is discriminated, the speech holding state is released and the external line speech or the extension speech is terminated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a telephone exchange which, when receiving a hook signal for a predetermined time from an analog telephone in an external telephone call or an internal telephone call, places the telephone call on hold.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a telephone exchange that receives a hook flash signal from a telephone connected to the telephone exchange in order to use services such as transfer, three-way calling, and call waiting (for example, see Patent Document 1).
[0003]
When such a telephone exchange receives a hook flash signal from a telephone that is talking to another telephone, the telephone exchange with the other telephone is temporarily put on hold, and then, when a predetermined operation is performed from the telephone, a transfer or a call is performed. Services such as waiting call capture can be provided.
[0004]
[Patent Document 1]
JP-A-6-98019
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional telephone exchange, when the user of the telephone which is talking with another telephone tries to put the telephone receiver on the hook switch in order to end the telephone call, the telephone receiver is poorly placed, and the telephone receiver is The hook switch may be pressed in the order of OFF → ON → OFF → ON due to being placed on the hook switch, etc., and the hook flash signal is sent to the telephone exchange before it is determined that the telephone has shifted to the on-hook state. Sometimes sent out.
[0006]
When the telephone exchange receives the hook flash signal before determining that the telephone has transitioned to the on-hook state, the telephone exchange puts the telephone call on hold (disconnects the voice path) with another telephone during a call and waits for a predetermined time. If the telephone user answers the call, the other telephone that was talking before answering the call goes on-hook and hangs up. In such a case, a tone signal such as a busy tone is simply transmitted from the telephone exchange, and there is a problem that it is difficult to know why the bell call was made.
[0007]
Also, when a user of a telephone that is in a call with another first telephone terminates the call and immediately makes a call to make a call with another second telephone, the user may make a call. If the hook switch is not pressed sufficiently for a predetermined time or more to end the operation, a hook flash signal is sent to the telephone exchange, and the call with the first telephone may be put on hold. Then, the call is made to the other second telephone in the hold state, and when the telephone is put on-hook when ending the call with the second telephone, the first telephone in the hold state becomes the second telephone. Was transferred to another phone.
[0008]
The present invention has been made in view of the above-described conventional problems, and provides a telephone exchange that does not perform hold recall or transfer even when a hookflash signal unintended by a user of a telephone connected to the telephone exchange is sent to the telephone exchange. The purpose is to do.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, the present invention provides an extension interface to which an analog telephone can be connected, hook detection means for detecting a hook operation of the analog telephone connected to the extension interface, and determining a state of the analog telephone. When the operation determining means determines that the analog telephone is in a state of making an external or internal call when the hook detecting means receives a hook operation for a time length within a predetermined time range, the call is terminated. Control means for holding the call, the control means releases the call hold state when the analog telephone has performed a hook operation for a time length equal to or longer than a predetermined time range while the call is on hold, and releases the external call or It has a first mode for ending an extension call.
[0010]
This makes it possible to provide a telephone exchange that does not perform hold recall or transfer even when a hookflash signal unintended by the user of the telephone connected to the telephone exchange is sent to the telephone exchange. .
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
According to a first aspect of the present invention, there is provided an extension interface to which an analog telephone can be connected, hook detection means for detecting a hook operation of the analog telephone connected to the extension interface, and operation determination means for determining a state of the analog telephone. And when the operation determining means determines that the analog telephone is in a state of making an external or internal call when the hook detecting means receives a hook operation for a time length within a predetermined time range, the call is put on hold. Means for controlling, when it is determined that the analog telephone has performed a hook operation for a time longer than a predetermined time range while the call is on hold, the call release state is released and the external call or internal call is terminated. A telephone exchange characterized by having a first mode in which a user of a telephone connected to the telephone exchange intends. Even if a hook flash signal is sent to the telephone exchange and an internal or external call is put on hold, if the receiver is put on hold and the on-hook is continued, it is determined that the telephone is on-hook and the hold state is released. Therefore, it is possible to provide a telephone exchange that does not perform hold recall or transfer.
[0012]
According to a second aspect of the present invention, in the first aspect, the control means determines that the external telephone call or the internal telephone call is in a hold state, and that the operation determination means determines that the analog telephone has made an external call, and that the call hold state is set. And a second mode for terminating the external telephone call or the internal telephone call, wherein the user of the analog telephone talking to the external telephone or the internal telephone calls an on-hook request ( (Hook switch is pressed for more than a predetermined time), and the hook switch is not pressed for more than a predetermined time even though it is attempted to make a call immediately to talk to a telephone connected to another telephone line (external line). Even if a hookflash request is made to the telephone exchange and a call to an outside line or another extension is mistakenly put on hold, When an outgoing call is made, the hold state of the outside line or extension is released and the connection with the outside line or extension is released, so that it is possible to avoid staying in the hold state of the outside line or extension and to connect with other telephone lines. This has the effect that, when the call is ended, the held external line or internal line is not transferred to another telephone line.
[0013]
According to a third aspect of the present invention, in the first or second aspect, the control means, when the external telephone call or the internal telephone call is on hold and the operation determining means determines that an internal telephone call has been made from the analog telephone, the control of the telephone call. A speech exchange having a third mode for releasing a hold state and terminating an external or internal call, wherein a user of an analog telephone that is talking to an external or internal telephone can make the call on-hook. A request (pressing the hook switch for a predetermined time or more) terminates the call, and immediately after trying to make a call to talk to another extension telephone, the hook switch has not been pressed for a predetermined time. If a request is made and the call to the outside line or another extension is inadvertently put on hold, , When you release the hold state of the external line or extension and release the connection with the external line or extension, you can avoid staying on hold of the external line or extension and terminate the call with another telephone line In addition, there is an effect that an outside line or an extension line on hold is not transferred to another extension line.
[0014]
A fourth invention of the present invention is the telephone according to the third invention, wherein at least one of the first mode, the second mode, and the third mode can be set for each extension interface. This is an exchange, and has the effect that for each user of the extension telephone, post-hold processing can be performed in accordance with the request of the user.
[0015]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
(Embodiment 1)
FIG. 1 is a configuration diagram of a telephone exchange according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a voltage waveform of a line (TR) between the extension interface and the analog telephone according to the first embodiment of the present invention.
[0017]
In FIG. 1, reference numeral 1 denotes a telephone exchange such as a private branch exchange, and 2, 2a,..., 2n denote analog telephones connected to the telephone exchange 1. The analog telephone 2 is a general term for the analog telephones 2a,.
[0018]
Reference numerals 11, 11a and 11b denote analog external line interfaces for performing connection and communication with an analog telephone line, and perform connection (off-hook) and release (on-hook) with the analog telephone line in accordance with a command from the control means 16, which will be described later. It can transmit dial signals. , 13n are extension interfaces for connecting the analog telephone 2, 131a,..., 131n are hook detection circuits (hook detection means of the first embodiment of the present invention). It has functions such as receiving a DTMF signal (dial signal) from the analog telephone 2 and detecting a hook signal from the analog telephone 2 by the hook detection circuits 131a,. Note that the analog external line interface 11 and the internal line interface 13 are generic names of the analog external line interfaces 11a and 11b and the internal line interfaces 13a,.
[0019]
Reference numeral 14 denotes switch means for connecting and disconnecting a voice signal between the external line interface 11 and the internal line interface 13 and between the internal line interfaces 13. For example, a switch 14 connects a voice path between the external line interface 11 and the internal line interface 13. Then, a telephone call is established between the telephone line connected to the external line interface 11 and the analog telephone 2 connected to the internal line interface 13.
[0020]
The switch means 14 disconnects the voice path between the external interface 11 and the internal interface 13 when the call state between the telephone line and the analog telephone 2 shifts to the hold state, and is connected to the switch means 14. An audio path is connected between a tone transmission circuit (not shown) and the extension interface 13 to transmit a tone signal to the analog telephone 2 to notify that dialing is possible. A voice path to a connected hold sound source (not shown) is connected, and control is performed so as to transmit a hold sound to a telephone line.
[0021]
Reference numeral 15 denotes a storage unit that stores programs, various setting information, and the like, and includes a hooking mode storage unit 15a. Here, the hooking mode storage unit 15a stores a hooking mode (hooking mode 1 to hooking mode 4) in association with each extension interface 13, and the operation determining unit 16b, which will be described later, determines that the analog telephone 2 is connected to the telephone line. On-hook signal sent from the analog telephone 2 (when the hook switch of the analog telephone 2 is pressed for a predetermined time or more) when it is determined that a call with the telephone or another extension telephone (including a digital telephone) is on hold. Is received, the control means 16 performs processing on the on-hook signal according to the contents stored in the hooking mode storage means 15a.
[0022]
This hooking mode 1 is used for the input contents input by the operator of the analog telephone 2, (a) the call termination operation as it is, (b) the call termination operation after the outside line transmission operation, and (c) the call termination operation after the extension line transmission operation. On the other hand, the held call is a mode in which (a) the call is kept on hold, (b) the call is transferred to the outside line destination, and (c) the call is transferred to the extension line destination. The hooking mode 2 includes (a) and (b). For the operation of (c), the mode is set to (a) hold disconnection, (b) transfer to an outside line destination, and (c) transfer to an extension destination. Similarly, the hooking mode 3 is a mode in which, in response to the operations (a), (b), and (c), the held call is set to (a) hold disconnection, (b) hold disconnection, and (c) transfer, The hooking mode 4 is a mode in which (a) hold disconnection, (b) hold disconnection, and (c) hold disconnection. These four hooking modes are set for each extension interface 13 in the hooking mode storage means 15a. The hooking mode 2 (a), the hooking mode 3 (a), and the hooking mode 4 (a) are the first mode of the present invention, the hooking mode 3 (b), and the hooking mode 4 (b). (C) of the second mode and the hooking mode 3 of the present invention correspond to the third mode of the present invention, respectively.
[0023]
The hooking mode storage means 15a can change the hooking mode of each extension telephone by operation from the extension telephone 2 or from a computer device (not shown) connected to the telephone exchange 1.
[0024]
Reference numeral 16 denotes control means for controlling the entire telephone exchange 1, 16a a user operation detecting means, 16b an operation determining means, and 17 a line connecting the extension interface 13 and the analog telephone 2.
[0025]
The user operation detecting means 16a transmits the hook information detected by the hook detection circuits 131a,..., 131n to the off-hook request when hook information (information of pressing or non-pressing of the hook switch) is transmitted from the analog telephone 2. It has a function of identifying whether the request is an on-hook request, a hook flash request, or the like. For example, a specific description will be given with reference to FIG. 2. FIG. 2 shows that when the user of the analog telephone 2 tries to put the handset (handset) on the hook switch from a call state, the hook switch is erroneously set for a predetermined time ( T1) The state of the line 17 when the receiver is placed on the hook switch (T2 or more) after being pressed, where T1 and T2 are within a predetermined time range (for example, 300 to When it is determined by the user operation detecting means 16a that the time is 800 ms), the user operation detecting means 16a determines that the analog telephone 2 has transmitted the hook flash request. When T1 and T2 are smaller than 300 ms, the user operation detecting means 16a ignores the hook information (information of pressing or non-pressing of the hook switch) of the analog telephone 2, and when T1 and T2 are larger than 800 ms, The user operation detecting means 16a processes the hook information of the analog telephone 2 as an on-hook request.
[0026]
Therefore, in the state as shown in FIG. 2, if T1 is within a predetermined time range, the user operation detecting means 16a identifies that the analog telephone 2 has made the hook flash request, and the control means 16 determines The switch means 14 is controlled so that the telephone call with the telephone line is put on hold. Although not shown, the state of V1 shifts to the state of V2, and when the state of V2 continues for a predetermined time (for example, 900 ms), the user operation detecting means 16a detects the hook information from the analog telephone 2 The control unit 16 identifies the request as an on-hook request and, when a dial or the like is transmitted from the analog telephone 2, performs a process such as calling an outside line. Further, V1 and V2 mean line voltages. When V1, the hook switch of the analog telephone 2 is pressed, and when V2, the hook switch of the analog telephone 2 is not pressed. .
[0027]
The operation determining means 16b determines whether the analog telephone 2 connected to the extension interface 13 is in a talking state with the other party of the telephone line via the external interface 11 or whether the analog telephone 2 is connected to another telephone via the extension interface 13. It is determined whether the analog telephone 2 is in a state such as whether the telephone call is in progress and whether the telephone call is on hold by the hook flash signal of the analog telephone 2.
[0028]
The operation of the telephone exchange configured as described above will be described below with reference to FIG. FIG. 3 is a flowchart showing an operation of the telephone exchange in the telephone exchange according to the first embodiment of the present invention when the telephone performs a hook operation from a talking state.
[0029]
First, when the analog telephone 2 picks up the receiver and puts the hook switch in a non-pressed state for a predetermined time or more, the user operation detecting means 16a determines that there is an off-hook request from the analog telephone 2, and the control means 16 controls the switch means 14. A tone path is connected to the analog circuit to which the tone circuit and the analog telephone 2 are connected to output a tone to the analog telephone 2 and the user operation detecting means 16a can receive a dial signal from the analog telephone 2. To Thereafter, when a dial signal is transmitted from the analog telephone 2, the user operation detecting means 16a detects the dial signal. If the dial signal is a request for outgoing line transmission, the external line interface 11 is controlled to capture the telephone line. (Off-hook), and based on the dial signal transmitted thereafter from the analog telephone 2, a dial signal is transmitted from the external line interface 11 to the telephone line, and the switch means 14 is controlled so that the captured external line interface 11 A voice path is connected to the extension interface 13 to which the analog telephone 2 is connected.
[0030]
The dial signal is detected by the user operation detecting means 16a, and if the dial signal is a request for extension transmission, the control means 16 sends a bell signal from the extension interface 13 corresponding to the dial signal, and Responds to the bell signal, a voice path is connected between the extension interface 13 to which the destination telephone is connected and another extension interface 13 to which the analog telephone 2 is connected. By such an operation, the analog telephone 2 is in a call with the telephone line or another extension telephone.
[0031]
Here, when the user of the analog telephone 2 presses the hook switch for a predetermined time (including erroneous operation) (S1), the user operation detecting means 16a identifies that the analog telephone 2 has issued a hook flash request, and notifies the control means 16 of the request. I do. The control unit that has received the notification of the hook flash request puts the telephone call of the analog telephone 2 into a temporary hold state (S2). Note that the hold state disconnects the voice path between the external line interface 11 and the extension interface 13 to which the analog telephone 2 is connected, and the tone transmission circuit (not shown) and the analog telephone 2 connected to the switch means. A voice path to the connected extension interface 13 is connected, and a tone signal is sent to the analog telephone 2 to notify that dialing is possible, while the outside line interface 11 (or the extension interface 13 of the call destination) and the switch means are connected. This is performed by connecting a voice path to a hold sound source (not shown) connected to 14 and controlling to send a hold sound to a telephone line.
[0032]
Thereafter, the user operation detecting means 16a waits for an operation of a dial key or a hook switch provided on the analog telephone 2 performed by the user of the analog telephone 2 (S3). Then, when there is an input from the user of the analog telephone 2, the user operation detecting means 16a identifies the content of the input. In the first embodiment, the identification contents are (1) a call termination operation, (2) a hold operation, (3) an outside line transmission operation, and (4) an extension transmission operation. Here, when the hook switch of the analog telephone 2 is pressed for a predetermined time or more, it is identified (S4) that an end-of-call operation (on-hook request) has been performed (S4). 87) is transmitted, it is determined that this hold operation has been performed (S5). Also, when the outside line transmission request is dialed from the analog telephone 2, it is identified that the outside line transmission operation has been performed (S6), and when the extension number is dialed from the analog telephone 2, the extension transmission operation is performed. (S7).
[0033]
First, when the user operation detecting means 16a identifies that the (1) end operation has been performed from the analog telephone 2, the control means 16 determines which hooking mode (hooking mode) the analog telephone 2 uses based on the hooking mode storage 15a. 1 to hooking mode 4) is determined (S8).
[0034]
When it is determined that the hooking mode 1 has been set, when the user operation detecting means 16a determines that the hook switch of the analog telephone 2 has been pressed for a predetermined time (for example, 30 s) or more, the control means 16 A bell signal is output to the analog telephone 2 via the extension interface 13, and a notification (hold recall) is issued to urge on-hook to release the hold state (S9). On the other hand, if it is determined that the hooking mode is set to the hooking modes 2 to 4, the hold is released and the end call control is performed (S10).
[0035]
Here, when the hold is released from the telephone line, the control means 16 controls the switch means 14 to disconnect the communication path between the external line interface 11 and the hold sound source when the telephone line is on hold. Requests that the telephone line be released (on-hook) to the telephone line 11 and further deletes the information that the analog telephone 2 is holding the telephone line from the hold state storage means (not shown) of the storage means 15. When the telephone is on hold with another extension telephone, the control means 16 controls the switch means 14 to cut off the communication path between the extension interface 13 connected to the other extension telephone and the tone circuit. Then, the communication path between the extension interface 13 to which another extension telephone is connected and the tone circuit is connected by the switch means 14, and a busy tone is transmitted to the other extension telephone. However, when another extension telephone is already in the on-hook state (end-of-call state), the communication path with the tone circuit is not connected. Further, the information that the analog telephone 2 is holding another extension telephone is deleted from the holding state storage unit (not shown) of the storage unit 15. Thus, even if a hook flash signal not intended by the user of the analog telephone 2 connected to the telephone exchange 1 is sent to the telephone exchange 1 and an internal or external call is put on hold, the hooking modes 2 to 5 are not performed. If it is set to 4, if the receiver is put on-hook and the on-hook is continued thereafter, it is determined that the telephone is on-hook and the hold state is released, so that the hold recall or transfer is not performed.
[0036]
Next, when the user operation detecting means 16a identifies that (2) this hold operation has been performed from the analog telephone 2, the control means 16 sets which hooking mode the analog telephone 2 sets to based on the hooking mode storing means 15a. It is determined whether it has been performed (S11). When it is determined that the hooking mode 1 has been set, the user operation detecting means 16a shifts from the temporary hold to the permanent hold state and continues the hold state (S12). Similarly, when it is determined that the hooking mode is set to the hooking modes 2 to 4, the state shifts to the full hold state and the hold state is continued (S13). The temporary hold can be transferred by a transfer operation, but the temporary hold is a mode in which the transfer is not performed even if the transfer operation is performed.
[0037]
When the user operation detecting means 16a identifies that (3) an outside line transmission operation has been performed from the analog telephone 2, the control means 16 determines which hooking mode the analog telephone 2 is set to based on the hooking mode storage means 15a. Is determined (S14). When it is determined that the hooking mode is set to the hooking mode 1 or 2, the control unit 16 continues the outside line transmission operation while maintaining the holding state (S15). On the other hand, if it is determined that the hooking mode is set to the hooking mode 3 or 4, the hold state is released and the outside line transmission operation is continued (S16). The operation of releasing the hold state is the same as that described above. Therefore, despite the fact that the user of the analog telephone 2 talking on the outside line or the extension telephone tries to end the telephone call by going on-hook, there is not enough time to press the hook switch, and the analog telephone connected to the telephone exchange 1 Even if a hook flash signal that is not intended by the user of the telephone 2 is sent to the telephone exchange 1 and an internal or external call is put on hold, if an external call is made from the analog telephone 2, the external or internal line Since the hold state is released and the connection with the outside line or extension is released, it is possible to prevent the outside line or extension from staying on hold, and when the call with another telephone line is ended, the hold state is released. External or internal lines are not transferred to other telephone lines.
[0038]
When the user operation detecting means 16a identifies that the (4) extension calling operation has been performed from the analog telephone 2, the control means 16 determines which hooking mode the analog telephone 2 is set to based on the hooking mode storage section 15a. Is determined (S17). When it is determined that the hooking mode is set to the hooking mode 1, 2, or 3, the control means 16 continues the extension calling operation while maintaining the holding state (S18). On the other hand, if it is determined that the hooking mode 4 is set, the hold state is released and the extension calling operation is continued (S19). The operation of releasing the hold state is the same as that described above. Therefore, despite the fact that the user of the analog telephone 2 who is talking on the outside or the extension telephone tries to end the telephone call by going on-hook, there is not enough time to press the hook switch, and the user is connected to the telephone exchange 1. Even if a hook flash signal that is not intended by the user of the analog telephone 2 is sent to the telephone exchange 1 and an internal or external call is put on hold, if an internal line is transmitted from the analog telephone 2, an external line or internal line The call is released from the hold state and the connection to the outside line or extension is released, so that it is possible to prevent the outside line or extension from staying on hold, and when the call with the other telephone line ends, the call is held Is not transferred to another extension.
[0039]
【The invention's effect】
According to the present invention, when a hook operation for a predetermined length of time is received by the hook detection means, the operation determination means determines that the analog telephone is in a state of making an external or internal call, and the call is put on hold. Then, if it is determined that the analog telephone has performed a hook operation for a time longer than a predetermined time range, the hold mode of the call is released and the first mode for terminating the external call or the internal call is provided. Even if a hookflash signal that is not intended by the user of the telephone connected to the exchange is sent to the telephone exchange and the internal or external call is put on hold, the telephone can be kept on-hook after the handset is put on hold. Is determined to be on-hook, and the hold state is released. Can.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a telephone exchange according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a voltage waveform of a line (TR) between an extension interface and an analog telephone according to the first embodiment of the present invention.
FIG. 3 is a flowchart showing the operation of the telephone exchange in the telephone exchange according to the first embodiment of the present invention when the telephone performs a hook operation from a call state;
[Explanation of symbols]
1 telephone exchange
2,2a, ..., 2n analog telephone
11, 11a, 11b External line interface
13, 13a, ..., 13n Extension interface
131a hook detection circuit
14 Switch means
15 Storage means
15a Hooking mode storage means
16 control means
16a User operation detecting means
16b operation determining means

Claims (4)

An extension interface to which analog telephones can be connected,
Hook detection means for detecting a hook operation of an analog telephone connected to the extension interface,
Operation determining means for determining a state of the analog telephone;
When the hook detection means receives a hook operation for a time length within a predetermined time range and the operation determination means determines that the analog telephone is in a state of making an external or internal call, the call is put on hold. Control means for performing
The control means,
If it is determined that the analog telephone has performed a hook operation for a time length equal to or longer than a predetermined time range while the call is on hold, a first mode for releasing the hold state of the call and ending the external call or internal call is performed. A telephone exchange, comprising: The control means,
When the external call or the extension call is on hold and the operation determining means determines that the analog telephone has made an external call, the hold state of the call is released and the external call or extension call is terminated. The telephone exchange according to claim 1, further comprising a mode. The control means,
When the external telephone call or the internal telephone call is on hold and the operation determining means determines that the analog telephone has made an internal call, the hold state of the telephone call is released and the external telephone call or the internal telephone call ends. 3. The telephone exchange according to claim 1, wherein the telephone exchange has the following modes. 4. The telephone exchange according to claim 3, wherein at least one of the first mode, the second mode, and the third mode can be set for each extension interface.

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