Processing device, program and method

Abstract

To provide a processing device capable of shielding noise even when the noise occurs to a party who is disconnected during a call. [Solution] The processing device is an analog telephone terminal housing board that houses an analog telephone terminal device, and is equipped with a gain adjustment processing unit that converts the level of an analog audio signal to a predetermined level, a first processing unit that receives a first signal based on operation processing in the analog telephone terminal device from the analog telephone terminal device to which a speech path is established, and in response to receiving the first signal, causes the gain adjustment processing unit to execute a silencing process to silence the audio, and a second processing unit that receives a second signal indicating that the operation processing has been confirmed, and in response to receiving the second signal, causes the gain adjustment processing unit to execute a voice activation process to cancel the silencing process.

Description

[Technical Field]

[0001] The present invention relates to a processing device, a program and a method, and more particularly to a processing device, a program and a method for an analog telephone receiving board mounted on or connected to an exchange such as an automatic exchange connected to a line network. [Background technology]

[0002] In conventional analog telephone housing boards, due to performance reasons, an audio loop occurs inside the board, so switching devices are usually equipped with audio volume level adjustment functions called a send pad and a receive pad, and the initial settings are set so that no echo or noise occurs even if a loop occurs inside the board (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 06-125376 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the volume level of the audio volume adjustment function is variable and can be set by the user. Therefore, if a loop occurs with the volume level set above a certain level, the volume level will continue to rise within the board, causing noise (echo) for the person being amputated.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a processing device that can block out noise even if it occurs to the disconnected party during a specific call. [Means for solving the problem]

[0006] The processing device of the present invention is a processing device that is an analog telephone terminal housing board that houses an analog telephone terminal device, and is characterized by comprising: a gain adjustment processing unit that converts the level of an analog audio signal to a predetermined level; a first processing unit that receives a first signal based on an operation processing in the analog telephone terminal device from the analog telephone terminal device to which a speech path is established, and in response to receiving the first signal, causes the gain adjustment processing unit to execute a silencing process to silence the audio; and a second processing unit that receives a second signal indicating that the operation processing has been confirmed, and in response to receiving the second signal, causes the gain adjustment processing unit to execute a voice activation process to cancel the silencing process.

[0007] The program of the present invention is a program for causing a computer mounted on a processing device that accommodates an analog telephone terminal device and has a gain adjustment processing unit that converts the level of an analog voice signal to a predetermined level to function as a first processing unit that receives a first signal based on an operation processing in the analog telephone terminal device from the analog telephone terminal device to which a speech path is established, and causes the gain adjustment processing unit to execute a silencing process to silence the voice in response to receiving the first signal, and as a second processing unit that receives a second signal indicating that the operation processing has been confirmed, and causes the gain adjustment processing unit to execute a voice activation process to cancel the silencing process in response to receiving the second signal.

[0008] The method of the present invention is a processing method in a processing device that accommodates an analog telephone terminal device and has a gain adjustment processing unit that converts the level of an analog voice signal to a predetermined level, and is characterized in that the processing device executes the following processing steps: a first processing step of receiving a first signal based on an operation processing in the analog telephone terminal device from the analog telephone terminal device to which a speech path is established, and in response to receiving the first signal, causing the gain adjustment processing unit to execute a silencing processing to silence the voice; and a second processing step of receiving a second signal indicating that the operation processing has been confirmed, and in response to receiving the second signal, causing the gain adjustment processing unit to execute a voice activation processing to cancel the silencing processing. [Effects of the Invention]

[0009] According to the present invention, when a specific operation is detected during a call, muting processing is performed inside the board, thereby preventing looped audio from being transmitted to the disconnected person as noise regardless of the volume level. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic explanatory diagram showing an example of the configuration of a private branch exchange system including an analog telephone terminal accommodating board of a processing device according to an embodiment of the present invention; [Figure 2] 2 is an internal configuration diagram showing the internal configuration of the analog telephone terminal housing board of the present embodiment. FIG. [Figure 3] 10 is a flowchart showing control by a disconnection operation in a private branch exchange system including an analog telephone terminal accommodating board of the processing device of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] An analog telephone terminal housing board as a processing device according to an embodiment of the present invention will be described below with reference to the drawings, but the present invention is not limited to the following embodiment.

[0012] (First Example) (Configuration explanation) 1 is a schematic diagram showing an example of the configuration of a private branch exchange system including a PBX (private branch exchange) 1 connected to an analog telephone terminal housing substrate 6 of this embodiment. The private branch exchange system is composed of the PBX 1 and analog telephone terminal devices C, which are multiple extension terminals housed via the analog telephone terminal housing substrate 6 so that they can make and receive calls.

[0013] (PBX1) The PBX 1 has a TSW section 2 (time division switch section 2) which is a time division switch, and a main controller 3. A line interface board 5 connected to a line network B is connected to the outside line side of the PBX 1, and an analog telephone terminal accommodating board 6 connected to an analog telephone terminal device C is connected to the inside line side. The PBX 1 executes processing (call control) related to the speech path between a call terminal (not shown) and the analog telephone terminal device C via the line network B, and the speech path between the analog telephone terminal devices C.

[0014] The analog telephone terminal accommodating board 6 is an extension interface unit and accommodates one or more analog telephone terminal devices C. The analog telephone terminal device C is composed of a conventional analog telephone terminal (telephone).

[0015] The line interface board 5 is the external line interface section of the PBX 1 with the line network B, and accommodates one or more external lines (hereinafter also referred to as line network B) such as a central office line (analog two-wire type), an integrated digital communication line, or an Internet protocol line.

[0016] The main controller 3 is a type of computer device that is connected to the analog telephone terminal accommodating board 6, the line interface board 5, the TSW unit 2, etc., and controls the entire PBX 1. Although not shown, it includes a CPU (Central Processing Unit) interconnected by a bus, and memory units such as RAM (Random Access Memory), HDD (Hard Disk Drive), and SSD (Solid State Drive), and is configured so that the CPU controls the multiple connected functional units in accordance with the programs stored in the memory units.

[0017] The main controller 3 is connected to the main components of the PBX 1, such as the TSW unit 2, the line interface board 5, the analog telephone terminal housing board 6, and the boards associated with the PBX 1, such as the voice volume level adjustment function processing unit (not shown), and executes predetermined functions under program control. The main controller 3 also executes control related to operations such as connecting a call path between the internal analog telephone terminal device C and the external line network B, and disconnecting a connected call path.

[0018] The TSW unit 2 is connected between the line interface board 5 and the analog telephone terminal accommodating board 6, and under the control of the main controller 3, connects a call path between the line network B and the analog telephone terminal device C, or disconnects a call path that is currently connected.

[0019] The storage unit of the main controller 3 stores a line information table (not shown) for use by the PBX 1 in connecting speech paths between analog telephone terminal devices C and connecting internal and external lines, and in monitoring the status of the analog telephone terminal devices C. The line information table stores, for example, accommodation location information indicated by a unique number for each analog telephone terminal device C as default information, terminal type information of the analog telephone terminal device C as a telephone terminal, operation mode information such as normal mode, usage status information of the analog telephone terminal device C such as free / busy as usage status, and telephone numbers (extension numbers) assigned to the analog telephone terminal devices C as registration information, department information, and person-in-charge information, all associated with each extension number.

[0020] (Analog telephone terminal housing board 6) FIG. 2 is a diagram showing the internal configuration of the analog telephone terminal housing board 6 of this embodiment.

[0021] As shown in FIG. 2, the analog telephone terminal accommodating board 6 is composed of a power supply processing unit 61, a link detection processing unit 62, a two-wire to four-wire conversion processing unit 63, a first gain adjustment processing unit 64, an A / D conversion processing unit 65 (analog / digital conversion processing unit 65), an echo cancellation processing unit 66, a second gain adjustment processing unit 67, a codec processing unit 68, a decoding processing unit 69, a third gain adjustment processing unit 70, a D / A conversion processing unit 71 (digital / analog conversion processing unit 71), a fourth gain adjustment processing unit 72, and a microprocessor 73.

[0022] (Power supply processing unit 61) The power supply processing unit 61 is connected to the analog telephone terminal device C, and supplies a power supply voltage to the analog telephone terminal (telephone).

[0023] (Link detection processing unit (subscriber status monitoring processing unit) 62) The link detection processor (subscriber status monitoring processor) 62 (hereinafter referred to as the link detection processor 62) detects the operational state of the analog telephone terminal device C and executes processing to transmit a first signal based on the operation processing of the caller to the microprocessor 73. The operation processing includes a disconnection operation of changing the handset of the analog telephone terminal device C from off-hook to on-hook, a hold process of changing the analog telephone terminal device C to a hold state, and a dial operation process of changing the analog telephone terminal device C to a dial operation state. For example, the link detection processor 62 detects the on-hook state and the off-hook state of the analog telephone terminal device C and executes processing to transmit a connect signal and a disconnection signal (first signal based on the operation processing of the caller) to the microprocessor 73. Here, the on-hook state refers to a state in which the handset is picked up and a DC voltage (-48V) is applied to the analog telephone terminal device C from the power supply processor 61, but no current flows between the analog telephone terminal receiving board 6 and the analog telephone terminal device C (a state in which no current loop is generated). Here, the off-hook state refers to a state in which the receiver is hung up, a DC voltage (-48V) is applied to the analog telephone terminal device C from the power supply processing unit 61, and current flows between the analog telephone terminal accommodating board 6 and the analog telephone terminal device C (a state in which a current loop is created).

[0024] (2-wire / 4-wire conversion processing unit 63) The 2-wire / 4-wire conversion processing unit 63 processes the voice signal so that the voice signal is transmitted to and received from the analog telephone terminal device C via two wires, based on the 2-wire / 4-wire conversion processing unit. The 2-wire / 4-wire conversion processing unit 63 processes the voice signal so that the voice signal is transmitted to and received from the PBX 1 via four wires, based on the 2-wire / 4-wire conversion processing unit. The two-wire / four-wire conversion processing unit 63 also receives and amplifies an audio signal from the analog telephone terminal device C via the power supply processing unit 61, and converts the amplified audio signal into an audio signal having an AC component after removing a DC component from the amplified audio signal. Furthermore, the two-wire / four-wire conversion processing unit 63 performs voltage-current conversion processing on the audio signal received from the fourth gain adjustment processing unit 72 and amplifies the current-converted audio signal in order to supply a current for calls to the Tip terminal and the Ring terminal.

[0025] (First gain adjustment processing unit 64) The first gain adjustment processing unit 64 performs processing to convert the level of the audio signal received from the 2-wire / 4-wire conversion processing unit 63 to a desired reception level in accordance with a signal (a signal for muting or enabling audio) from the microprocessor 73. Here, the first gain adjustment processing unit 64 performs conversion processing so as to compensate for attenuation of the audio signal due to the lines (line A and line B) connecting the analog telephone terminal housing board 6 and the analog telephone terminal device C. The first gain adjustment processing unit 64 transmits the converted audio signal to the A / D conversion processing unit 65.

[0026] The first gain adjustment processing unit 64 performs a process of converting the level of the audio signal received from the two-wire / four-wire conversion processing unit 63 to a level that will result in silence (a process of setting the gain to 0 (a process of reducing the gain)) in accordance with a signal (a signal to make the audio) from the microprocessor 73. Alternatively, the first gain adjustment processing unit 64 performs a process of converting the level of the audio signal received from the two-wire / four-wire conversion processing unit 63 to a level that will result in audio (a process of increasing the gain from 0 to a predetermined level (a process of increasing the gain)) in accordance with a signal (a signal to make the audio) from the microprocessor 73. That is, the first gain adjustment processing unit 64 performs a process of making the audio signal transmitted to the PBX 1 silent or a process to make the audio signal active in accordance with a signal from the microprocessor 73.

[0027] (A / D conversion processing unit 65) The A / D conversion processing unit 65 converts the audio signal received from the first gain adjustment processing unit 64 from an analog signal to a digital signal. The A / D conversion processing unit 65 transmits the converted audio signal to the echo cancellation processing unit 66.

[0028] (Echo cancellation processing unit 66) The echo cancellation processing unit 66 cancels the echo (near-end echo) generated in the two-wire / four-wire conversion processing unit 63, using the audio signal received from the A / D conversion processing unit 65 and the audio signal received from the third gain adjustment processing unit 70. Here, the echo cancellation processing unit 66 converts the audio signal received from the third gain adjustment processing unit 70 to a desired reception level in accordance with the echo generated in the two-wire / four-wire conversion processing unit 63, and subtracts the converted audio signal from the audio signal received from the A / D conversion processing unit 65. The echo cancellation processing unit 66 transmits the subtracted audio signal to the second gain adjustment processing unit 67.

[0029] (Second gain adjustment processing unit 67) The second gain adjustment processing unit 67 performs processing to convert the level of the audio signal received from the echo cancellation processing unit 66 to a desired reception level. Here, the second gain adjustment processing unit 67 performs conversion processing so as to match the input level of the audio signal in the codec processing unit 68. The second gain adjustment processing unit 67 transmits the converted audio signal to the codec processing unit 68 .

[0030] (Codec processing unit 68) The codec processing unit 68 performs a predetermined voice encoding process on the voice signal received from the second gain adjustment processing unit 67. Here, an example of the predetermined voice encoding is PCM (Pulse Code Modulation). The codec processing unit 68 transmits the voice signal that has been subjected to the predetermined voice encoding process to the PBX 1.

[0031] (Decoder processing unit 69) The decoding processor 69 performs predetermined audio decoding processing on the audio signal received from the PBX 1. The decoding processor 69 transmits the audio decoded audio signal to the third gain adjustment processor .

[0032] (Third gain adjustment processing unit 70) The third gain adjustment processing unit 70 performs processing to convert the level of the audio signal received from the decoding processing unit 69 to a desired reception level. Here, the third gain adjustment processing unit 70 performs processing to convert the level so that it matches the input level of the audio signal in the D / A conversion processing unit 71. The third gain adjustment processing unit 70 transmits the converted audio signal to the echo cancellation processing unit 66.

[0033] (D / A conversion processing unit 71) The D / A conversion processing unit 71 converts the audio signal received from the echo cancellation processing unit 66 from a digital signal to an analog signal. The D / A conversion processing unit 71 transmits the converted audio signal to the fourth gain adjustment processing unit 72.

[0034] (Fourth gain adjustment processing unit 72) The fourth gain adjustment processing unit 72 performs processing to convert the level of the audio signal received from the D / A conversion processing unit 71 to a desired reception level in accordance with a signal (a signal for muting or enabling audio) from the microprocessor 73. Here, the fourth gain adjustment processing unit 72 performs conversion processing so as to compensate for attenuation of the audio signal due to the lines (line A and line B) connecting the analog telephone terminal housing board 6 and the analog telephone terminal device C. The fourth gain adjustment processing unit 72 transmits the converted audio signal to the 2-wire / 4-wire conversion processing unit 63.

[0035] The fourth gain adjustment processing unit 72 performs a process of converting the level of the audio signal received from the D / A conversion processing unit 71 to a level that will result in silence (a process of setting the gain to 0 (a process of reducing the gain)) in accordance with a signal (a signal to make the audio) from the microprocessor 73. Alternatively, the fourth gain adjustment processing unit 72 performs a process of converting the level of the audio signal received from the D / A conversion processing unit 71 to a level that will result in audio (a process of increasing the gain from 0 to a predetermined level (a process of increasing the gain)) in accordance with a signal (a signal to make the audio) from the microprocessor 73. In other words, the fourth gain adjustment processing unit 72 performs a process of making the audio signal to be transmitted to the analog telephone terminal device C in accordance with the signal from the microprocessor 73.

[0036] (Microprocessor 73) The microprocessor 73 controls the power supply processing unit 61, the link detection processing unit 62, the two-wire to four-wire conversion processing unit 63, the first gain adjustment processing unit 64, the A / D conversion processing unit 65, the echo cancellation processing unit 66, the second gain adjustment processing unit 67, the codec processing unit 68, the decoding processing unit 69, the third gain adjustment processing unit 70, the D / A conversion processing unit 71, and the fourth gain adjustment processing unit 72.

[0037] Although not shown, the microprocessor 73 is a microprocessor that includes an interface with the main controller 3 and a memory unit (not shown) such as a RAM or SSD. Note that some or all of the functions of the microprocessor 73 may be realized by hardware such as a DSP, ASIC, or FPGA.

[0038] The memory unit stores a plurality of programs including a control program executed by the microprocessor 73. The microprocessor 73 reads out and executes the control program from the memory unit, thereby performing the following: (1) As a first processing unit, (2) Functions as a second processing unit.

[0039] (1: First processing section) For example, the first processing unit receives a first signal based on an operation process by a call user at the analog telephone terminal device C from the analog telephone terminal device C to which a call path is established, and in response to receiving the first signal, transmits a second signal to the first gain adjustment processing unit 64 and the fourth gain adjustment processing unit 72 instructing them to perform a silencing process to silence the voice.

[0040] The operation processing is, for example, a disconnection operation that changes the handset of the analog telephone terminal device C from off-hook to on-hook, a hold processing that changes the analog telephone terminal device C to a hold state, or a dialing operation processing that changes the analog telephone terminal device C to a dialing operation state.

[0041] (2: Second processing section) The second processing unit, for example, receives a link detection processing unit 62 indicating that the operation processing has been confirmed, and in response to the reception of the link detection processing unit 62, transmits a fourth signal to the first gain adjustment processing unit 64 and the fourth gain adjustment processing unit 72 instructing them to perform a sound activation processing to cancel the silent processing.

[0042] (Explanation of operation) Fig. 3 is an explanatory flow of the operation of the call disconnection operation in this embodiment. Fig. 3 shows the flow of the line network B (outside line side), PBX 1, analog telephone terminal housing board 6 (extension side), and analog telephone terminal C (extension side) when the analog telephone terminal C changes its state from on-hook to off-hook to start a call and then changes its state from off-hook to on-hook.

[0043] (Step S10) At analog telephone terminal C, the state changes from on-hook to off-hook, and a call path is established between the terminal connected to line network B (external line side) and analog telephone terminal C (extension side), and then the call is in progress. Note that a call path can be established not only with line network B (external line side), but also between analog telephone terminals C (extension side).

[0044] (Step S20) In the analog telephone terminal device C, when the caller performs a disconnection operation to change the handset of the analog telephone terminal device C from off-hook to on-hook to end the call, the state changes from off-hook to on-hook, and a disconnection signal is sent to the analog telephone terminal housing board 6. In the analog telephone terminal housing board 6, the link detection processing unit 62 receives the transmitted disconnection signal and detects the first pulse of the off-hook / on-hook pulse due to the disconnection, and the microprocessor 73, the first gain adjustment processing unit 64, and the fourth gain adjustment processing unit 72 execute muting processing. The microprocessor 73 of the analog telephone terminal housing board 6 sends a disconnection signal to the main controller 3 of the PBX 1.

[0045] The main controller 3 of the PBX 1 receives, detects and accepts the disconnection signal transmitted from the analog telephone terminal housing board 6.

[0046] (Step S30) The main controller 3 of the PBX 1 executes disconnection processing when it receives the disconnection signal transmitted from the analog telephone terminal device C. The main controller 3 of the PBX 1 transmits a disconnection signal to the line network B (outside line side).

[0047] (Step S40) When the line network B (outside line side) receives the disconnection signal sent from the main controller 3 of the PBX 1, it sends a release signal to the main controller 3 of the PBX 1. The main controller 3 of the PBX 1 receives and detects the release signal sent from the line network B (outside line side).

[0048] (Step S50) When the main controller 3 of the PBX 1 receives the release signal sent from the line network B (outside line side), it executes the release process. The main controller 3 of the PBX 1 releases the communication path of the line network B (outside line side) and sends the release signal to the analog telephone terminal housing board 6.

[0049] (Step S60) Then, the main controller 3 of the PBX 1 executes release completion processing. The main controller 3 of the PBX 1 transmits a release completion signal to the caller's terminal connected to line network B (outside line side), and also transmits a release completion signal (which in the analog telephone terminal accommodating board 6 is also treated as a second signal instructing silencing processing to silence the voice) to the analog telephone terminal accommodating board 6. In the analog telephone terminal accommodating board 6, the microprocessor 73 receives the transmitted release completion signal, and causes the microprocessor 73, the first gain adjustment processing unit 64, and the fourth gain adjustment processing unit 72 to execute silencing processing to silence the voice.

[0050] 3, when a pulse is detected due to a handset being disconnected, a mute instruction can be issued to, for example, a register inside the analog telephone terminal accommodating substrate 6 (a register related to the first gain adjustment processing unit 64 and the fourth gain adjustment processing unit 72). This makes it possible to cut off audio while noise is occurring. Similarly, when a disconnection confirmation event (release completion signal) is received, a sound activation instruction can be issued to, for example, a register inside the analog telephone terminal accommodating substrate 6 (a register related to the first gain adjustment processing unit 64 and the fourth gain adjustment processing unit 72), thereby preventing the continuation of the mute state and preventing it from affecting the next call.

[0051] In the first embodiment shown in Figure 3, an example of a countermeasure during a disconnection operation process was explained, but it is also possible to suppress noise generation by taking similar measures during other operation processes such as a hold (hooking) operation during a call or a number dialing operation. [Explanation of symbols]

[0052] 1 PBX 2 TSW Department 5 Line interface board 6 Analog telephone terminal housing board 62 Link detection processing unit 64 First gain adjustment processing unit 73 Microprocessor

Claims

1. A processing device that is an analog telephone terminal housing board that houses an analog telephone terminal device, a gain adjustment processing unit that converts the level of an analog audio signal to a predetermined level; a first processing unit that receives a first signal based on an operation process in the analog telephone terminal device from the analog telephone terminal device with which a speech path is established, and causes the gain adjustment processing unit to execute a muting process to mute audio in response to the reception of the first signal; a second processing unit that receives a second signal indicating that the operation process has been confirmed, and causes the gain adjustment processing unit to execute a sound activation process to cancel the sound reduction process in response to the reception of the second signal; A processing device comprising:

2. 2. The processing device according to claim 1, wherein the operation process is a disconnection operation of switching the receiver of the analog telephone terminal device from off-hook to on-hook.

3. 2. The processing device according to claim 1, wherein the operation process is a hold process that puts the analog telephone terminal into a hold state.

4. 2. The processing device according to claim 1, wherein the operation process is a dial operation process that brings the analog telephone terminal device into a dial operation state.

5. A computer installed in a processing device that accommodates an analog telephone terminal device and has a gain adjustment processing unit that converts the level of an analog voice signal to a predetermined level, a first processing unit that receives a first signal based on an operation process in the analog telephone terminal device from the analog telephone terminal device with which a speech path is established, and causes the gain adjustment processing unit to execute a silencing process to silence a voice in response to the reception of the first signal, a second processing unit that receives a second signal indicating that the operation process has been confirmed, and causes the gain adjustment processing unit to execute a sound activation process to cancel the sound reduction process in response to the reception of the second signal, Program to make it work.

6. A processing method for a processing device that accommodates an analog telephone terminal device and has a gain adjustment processing unit that converts the level of an analog voice signal to a predetermined level, comprising: The processing device includes: a first processing step of receiving a first signal based on an operation process in the analog telephone terminal device from the analog telephone terminal device with which a speech path is established, and causing the gain adjustment processing unit to execute a muting process to mute audio in response to the reception of the first signal; a second processing step of receiving a second signal indicating that the operation processing has been confirmed, and causing the gain adjustment processing unit to execute a sound activation processing to cancel the sound reduction processing in response to the reception of the second signal; A processing method characterized by carrying out the above.

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