JPH08111716A - Key telephone system - Google Patents

Abstract

PURPOSE: To conduct a test with inexpensive constitution without requiring any special hardware for the test by conducting a loop-back test in a main wire interface circuit by using reflection in a hybrid circuit and a PB signal. CONSTITUTION: For normal main wire origination, a 1st relay 27 is closed and a 2nd loop 28 is separated from a loop circuit side to form a loop between L1 and L2 through the hybrid circuit 24. The PB signal in PCM code from a PCM highway processing part 26 is converted by a CODEC 25 into an analog speech signal, which is sent to the hybrid circuit 24 and sent out to the main wire of L1 and L2. Here, the speech signal sent out toward the main wire is lowered in level by reflection in the hybrid circuit 24 and returned to the CODEC 25. When the relays 27 and 28 are open, the speech signal outputted from the CODEC 25 to the hybrid circuit 24 is returned to the CODEC 25 almost having the sending-out level by the reflection in the hybrid circuit 24.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to testing in key telephone systems.

[0002]

2. Description of the Related Art In an outside line test in a conventional button telephone system, a person actually makes a call from an extension telephone, such as a time signal or a weather forecast, to the other party who responds automatically and listens to the voice or stores it. It was done by dialing a telephone number from one outside line to another outside line.

Further, the connection test between the main unit and the extension in the conventional button telephone system is performed by a person actually making an extension call or an outside call and confirming the real voices of both parties.

[0004]

However, in the above-mentioned conventional outside line test, it is necessary to have two or more persons to perform a test for confirming each other with real voice.

Further, when the call cannot be normally made, it is difficult to distinguish the problem between the extension telephone and the main unit, the problem of the external line circuit, or the problem of the external line wiring, and it is difficult to isolate the problem. .

Also, in the above conventional connection test,
In order to perform a test for confirming each other by voice, two or more people are required, and in particular, as the number of extensions increases, the number of test personnel required increases and the test time increases.

Further, when the real voice cannot be normally confirmed, it is necessary to test and confirm whether it is a new wiring problem or a problem of the extension telephone alone. Furthermore, if the extension is a wireless telephone, there may be a problem with the wireless line, and it was difficult to isolate the problem.

An object of the present invention is to provide a button telephone system which can easily and surely perform an outside line test and a connection test.

[0009]

The first invention of the present application is
A sending means for sending a PB signal to the outside line without capturing the outside line, a receiving means for receiving a PB signal from the same outside line as the outside line sending the PB signal, and a sending PB signal and a received PB signal And verification means for verifying whether or not they match.

The second and third aspects of the invention include registration means for registering a telephone number for each outside line, transmission means for transmitting to the telephone number registered by the registration means, and PB from the outside line.
Receiving means for receiving a signal, sending means for sending a PB signal to an outside line, verification means for verifying whether the sent PB signal and the received PB signal match, and the main means for activating the sending means. Then, the transmission means transmits a predetermined PB signal to the outgoing external line, and the receiving means determines from the external line responding to the incoming call whether the predetermined PB signal is received within a predetermined time. further,
A fourth aspect of the present invention includes a sending unit that has a dedicated extension telephone and a main unit, and that sends a PB signal from the main unit to the extension telephone.
It is verified whether the return means for returning the voice data from the main unit in the extension telephone, the receiving means for receiving the PB signal from the extension telephone in the main unit, and the PB signal sent and the received PB signal match. And a verification means for doing so.

The fifth aspect of the present invention has a dedicated extension radio telephone, a connection device, and a main device, and transmits the PB signal from the main device to the radio telephone, and wirelessly transmits voice data from the main device. Returning means for returning in the telephone, returning means for returning voice data from the main device in the connecting device, receiving means for receiving PB signal from the wireless telephone or connecting device in the main device, and transmitting PB signal and receiving And a verification means for verifying whether or not the PB signal matches.

[0012]

1 is a block diagram showing the configuration of a key telephone system according to a first embodiment of the present invention.

Main device 1 in this key telephone system
Is an outside line interface circuit 2 having an interface with a telephone line, a switch circuit 3 connecting a communication path, an extension line interface circuit 4 having an interface with an extension terminal, a tone ROM 5 serving as a sound source of a PB signal, and a PB.
A PB receiver 6 for detecting a signal, a keyboard 7 for giving an operation instruction on the main device 1, a display 8 for displaying a message or the like according to the operation content, and a control unit 9 for controlling the main device 1 as a whole. Have. The extension telephones 10 are connected to the extension interface circuits 4, respectively.

FIG. 2 is a block diagram showing the configuration of the outside line interface circuit 2.

In the figure, a loop circuit 21 performs relay control of an outside line during incoming call monitoring in the unused state, outgoing call and incoming call response, and a DP sending circuit 22 sends dial pulse (DP). It is a thing.

The incoming signal detection circuit 23 monitors incoming signals from the line, and the hybrid circuit 24 converts 2-line to 4-line voice signals. Codec (DO
The DEC) 25 is for converting an analog audio signal into a PCM code and vice versa.
The highway processing unit 26 controls input / output between the PCM highway of the switch circuit 3 and the CODEC 25.

During normal outside line transmission, the first relay (RL)
1) 27 is closed, the second relay (RL2) 28 is separated from the loop circuit side, and the hybrid circuit 24 is connected between L1 and L2.
To form a loop through.

If the dial pulse method is used according to the set dial method, the DP sending circuit 22 is driven to send the dial pulse. If the PB method is used, a tone ROM, which is a sound source, is connected to the PC via the switch circuit 3.
It is sent from the M Highway.

Therefore, the PB signal of the PCM code from the PCM highway processing unit 26 is converted into an analog voice signal by the CODEC 25 and sent to the hybrid circuit 24 and sent to the outside line of L1 and L2.

Here, in the hybrid circuit 24, the sound signal sent in the direction of the outside line is leveled down by the reflection and returns to the CODEC 25. In addition, when the relays 27 and 28 are in the open state (when monitoring incoming calls),
The audio signal output from the CODEC 25 to the hybrid circuit 24 is almost at the output level.
It returns to the CODEC 25 due to internal reflection.

Next, in the above-mentioned configuration, the processing when the outside line test is instructed from the keyboard 7 on the main unit will be described with reference to the flowchart of FIG.

First, while monitoring whether there is a test end instruction (S1), the test-instructed external line is connected to the PB receiver 6 by the switch circuit 3 (S2), and a PB signal is sent to the external line (S3).

Next, a timer for PB signal reception monitoring is started (S4), and it is monitored whether the PB signal is received before the time-out (S5, S6). If the PB signal is received, the process proceeds to S7, the PB signal being sent is stopped, and the timer is also stopped (S8).

The transmitted PB signal and the received PB signal
It is determined whether or not the signal and the signal match (S9), and if they match, the process returns to S1 and the above-described processing is repeated. Also, S9
If they do not match, the fact is displayed on the display 8 on the main device 1 (S11), and the test ends.

When the time-out occurs in S5, the fact is displayed on the display 8 on the main unit 1 (S1
0), the test ends.

Then, if there is an instruction to end the test in S1, the fact that the main test is normally completed is displayed on the display 8 on the main unit 1 (S12), and the test is ended.

Based on the test results as described above, the above-mentioned S
It can be determined from S10 and S11 that there is an abnormality in the outside line interface circuit.

The process for confirming the operation by using the external lines 1 and 2 already wired and accommodated in the main unit 1 will be described with reference to the flow charts of FIGS.

From the keyboard 7 on the main unit 1 to the outside lines 1 and 2
If there is a test instruction of the above, if the telephone number of the outside line 2 is registered in the control unit 9 (S20), the telephone number is transmitted from the outside line 1 (S21). Then, start the timer (S
23), it is monitored whether there is an incoming call on the outside line 2 before the time-out (S24, S25).

When an incoming call is received on the outside line 2, the timer is stopped (S27) and the response instruction from the outside line 2 is waited for (S27).
Then, if there is a response instruction to the incoming call from the keyboard 7, the outside line 2 and the PB receiver 6 are connected (S28),
The timer is started (S29).

Before the time-out, it is monitored whether the PB signal reception from the outside line 2 is detected (S30, S31), and if detected, it is determined whether the PB signal sent in S22 and the received PB signal match (S32). ), If they match,
It is considered that this main incoming call is due to the outgoing call from the outside line 1, and the sending of the PB signal to the outside line 1 is stopped (S33) and the timer is stopped (S34).

Next, from the outside line 2 to the PB in the same manner as described above.
The signal is transmitted and the PB signal is received by the outside line 1 (S35 to S35).
S40). Then, if it is determined in S40 that they match, the test is normally completed, and a message to that effect is displayed on the display unit 8.
The transmission of the B signal and the timer are stopped, the external lines 1 and 2 are disconnected, and the test ends.

PB signal transmitted in S40 and received PB signal
If the signals do not match, a message to that effect is displayed on the display 8, the PB signal transmission and the timer are stopped, and the outside lines 1 and 2
End the test that disconnected. In this case, it can be determined that the test result described in FIG. 3 has a problem with the main device 1 and the external wiring.

If the process proceeds to S43 based on the determination results of S32 and S30, it can be determined that an incoming call other than the test purpose has arrived before the incoming call from the outside line 1 and the main unit 1 (not shown) is operated by operating the keyboard 7. If you have a communication means such as a handset, you can talk to the outside line 2 or put on hold as usual.
You can transfer to another extension. Also, the PB transmission to the outside line 1 is stopped and the outside line 1 is disconnected.

If the time-out occurs in S24,
It is considered that there is an error in the telephone number of the registered outside line 2 or an error in the calling conditions such as an error in the setting of the dialing method. The fact is displayed on the display 8, the PB signal transmission and the timer are stopped, and the outside line 1 To disconnect the test (S4
4).

If there is no registration data in S20,
This is displayed on the display unit 8 to prompt the data registration, and the test ends (S45).

In the flow charts of FIGS. 3 to 5,
Although the method of transmitting the PB signal is not particularly described, for example, 1
Digit numbers are sent continuously, or 0-9,
*, #, A, B, C and D may be transmitted and received as one frame.

In addition to the comparison between the PB signal transmission of the test signal and the received PB signal, means for varying the transmission level at the time of transmitting the PB signal is provided to check the line status based on the relation with the transmission level value for normal reception. It becomes possible to judge the quality.

In FIG. 4 and FIG. 5, the external line incoming call is answered manually. However, when the main unit automatically answers and the PB signal cannot be detected, the voice recording unit receives the incoming call. By the determination shown in S20 of FIG. 4, it is possible to automatically change the combination of incoming and outgoing calls for a plurality of outside lines and execute the test by one activation instruction of the test.

The test shown in FIG. 3 relates to an external line interface circuit for analog external lines, but the tests shown in FIGS. 4 and 5 can be applied to an external line interface circuit for digital external lines.

Next, a second embodiment of the present invention will be described.

FIG. 6 is a block diagram showing the configuration of the key telephone system according to the second embodiment of the present invention.

Main device 3 in this button telephone system
Reference numeral 1 denotes an outside line interface circuit 41 having an interface with a telephone line, and a switch circuit 42 for connecting a communication path.
And an extension interface circuit 43 having an interface with an extension terminal, and a control unit 44 for controlling the main device 31 as a whole.
A tone ROM 45 that serves as a sound source for the PB signal, and a PB receiver 46 that detects the PB signal.

Then, one extension interface circuit 4
3, a dedicated extension telephone 32 is connected by wire, and a connection device 33 for converting data from the extension interface circuit 43 into a wireless signal is connected to the other extension interface circuit 43, and this connection device 33 is connected to a wireless device. The wireless telephone 34 is connected by.

FIG. 7 is a block diagram showing the configuration of the private extension telephone 32.

The interface unit 51 performs wired communication with the extension interface circuit 43 of the main unit 31, and the call circuit 52 selects the output destination of the audio data from the interface unit 51 and adjusts the level. It is something to do.

The handset 53 is used for a telephone call and has a microphone and a speaker, and the speaker 54 outputs a ring tone or the like. Also, the keyboard 55
Is equipped with a dial button and a plurality of function buttons, and the display unit 56 displays an input dialed number or the like. Further, the control unit 57 controls the whole.

FIG. 8 is a block diagram showing the configurations of the connection device 33 and the wireless telephone 34.

The connection device 33 has an interface section 62 for performing wired communication with the extension interface circuit 43, a signal processing section 63 for performing signal conversion between wired and wireless, and transmission / reception of wireless signals. It has a wireless circuit 64 for performing, an antenna 65, and a control unit 66 for controlling the entire connection device 33.

Further, the wireless telephone 34 includes a handset 71 having a microphone and a speaker which is used for a call, a speaker 72 which outputs a ring tone, a signal processing section 73 which performs signal conversion between wired and wireless, and a wireless communication. A wireless circuit 74 for transmitting and receiving signals, an antenna 75, a keyboard 76 having a dial button and a plurality of function buttons, a display 77 for displaying an input dial numeral, and a control section 7 for controlling the whole.
8 and.

Next, in the above-mentioned configuration, the process when the loopback test of a predetermined private extension telephone is instructed by means such as a maintenance console will be described with reference to the flowchart of FIG.

First, a loopback start is instructed by a control signal from the control unit 44 of the main unit 31 via the extension interface circuit 43 accommodated in the extension telephone 32 to be tested (S51). The response waiting monitoring timer is started (S52).

The control unit 57 of the dedicated extension telephone 32, which has received this instruction via the interface unit 51, causes the communication circuit 5
2 is set in a loopback state, and the audio data from the main device 31 is set back and returned to the main device 31. When this setting is completed, the main unit 31 is notified of a loopback setting completion response by a control signal via the interface unit 51.

The control unit 44 of the main unit 31 monitors whether or not a response comes before the timeout of the response waiting monitoring timer (S5).
3, S54). If a time-out occurs before receiving a response, the process proceeds to S55, a message indicating that a control information transmission error has occurred is displayed on the maintenance console or the like, and the process proceeds to S67 to perform loopback stop processing and terminate the test.

If there is a response from the private extension telephone 32, the process proceeds to S56 and the monitoring timer is stopped.

Then, it is monitored whether there is a test stop instruction (S57), and if there is a test stop instruction, S64.
The process proceeds to step S67, displays a message indicating the normal end, and goes to step S67 to send the call to the private extension telephone 32 to step S51 in the loopback stop process.
In the same manner as above, the loopback stop instruction is sent, and the dedicated extension telephone 32 returns the call circuit 52 to the normal state and ends the test.

If there is no test stop instruction, the controller 44 of the main unit 31 uses the switch circuit 42 to move from the extension interface circuit 43 accommodating the dedicated extension telephone 32 under test to the direction of the PB receiver 46. The call path and the call path from the tone ROM 45 toward the extension interface circuit 43 accommodating the dedicated extension telephone 32 under test are connected to send a PB signal (S58) and start a timer (S59).

Then, before the time-out, the PB receiver 4
It is monitored whether the PB signal is received at 6 (S60, S61),
If the time-out occurs, the process proceeds to S65, and a message indicating that a call path error has occurred is displayed on the maintenance console or the like, and S6 is executed.
7, the loopback stop process described above is performed, and the test ends.

When the PB signal is received in S61, the process proceeds to S62, the timer is stopped, and it is verified whether the received PB signal and the sent PB signal match (S6).
3). If they match, the process returns to S57, and the processes from S57 to S63 are repeated until the test stop is instructed.

If the PB signal received in S63 and the PB signal sent out do not match, the process proceeds to S66, a message indicating that a line status error has occurred is displayed on the maintenance console, etc., and the process proceeds to S67 and the above-mentioned. Performs loopback stop processing and ends the test.

Also in the connection device 33, the control unit 66 of the connection device 33 receives the loopback instruction via the interface unit 62, sets the signal processing unit 63 in the loopback state, and outputs the voice data from the main device 31. The operation according to the flowchart of FIG. 9 is performed by setting the settings so that the main device 31 is folded back.

Also, the wireless telephone 34 is basically the above-mentioned exclusive extension telephone 32 except that the loopback instruction is received by a wireless signal via the connection device 33.
Is the same as

However, due to the use of wireless signals, in FIG. 9, the reason why the process proceeds to S55, that is, the reason why the response cannot be received within the predetermined time is that the wireless circuit section 64 of the connection device 33 controls the wireless transmission start. Channel busy, subsequent call channel busy, no response from wireless telephone, failure of wireless circuit section, etc. are newly added.

Further, as a cause for advancing to S65, disconnection of a wireless line due to carrier disappearance due to radio wave conditions is newly added. It should be noted that these can be identified by an error code or the like by the display on the maintenance console or the like when an error occurs.

In the flow chart of FIG. 9, after the PB signal is transmitted as the test signal, its reception is confirmed,
The next transmission is performed, but when transmitting, a method is used in which 0 to 9, *, #, A, B, C, and D are continuously transmitted by the PB signal, and when receiving, it is verified whether it is in the transmission order. It is also possible to do so.

In addition to comparing the PB signal of the test signal with the received PB signal, when the PB signal is transmitted,
It is also possible to provide a means for making the transmission level variable and judge the quality of the line status from the relationship with the transmission level value for normal reception.

[0067]

As described above, according to the first to third inventions of the present application, reflection and P in the hybrid circuit are caused.
By performing the loopback test in the external line interface circuit using the B signal, it is possible to perform the test with an inexpensive configuration without requiring special test hardware.

Further, even when a test is performed in the main unit to which the external line is wired, the external line is not captured, so that the communication line system test of the external line interface circuit can be performed without affecting the central office switching side.

Furthermore, there is an effect that a test between the accommodated outside lines can be surely performed by one person by an easy operation and the problem can be easily isolated. Further, there is an effect that a normal incoming call is not disturbed even during the test, and that the device under actual operation can be tested with confidence.

According to the fourth and fifth inventions of the present application, a dedicated extension telephone, a connection device, a wireless telephone, and loopback means for each communication path are provided, and a main device issues a loopback test start instruction and a PB. By returning the signal as voice data and receiving the PB signal at the main unit, the operation check of the button telephone system can be performed without the other party of the call, and when trouble occurs it is easy to identify the problem area and the efficiency of problem solving There is an effect that can be achieved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a first embodiment of the present invention.

FIG. 2 is a block diagram showing an outside line interface circuit of the first embodiment.

FIG. 3 is a flowchart showing the operation of the first embodiment.

FIG. 4 is a flowchart showing the operation of the first embodiment.

FIG. 5 is a flowchart showing the operation of the first embodiment.

FIG. 6 is a block diagram showing an overall configuration of a second embodiment of the present invention.

FIG. 7 is a block diagram showing a dedicated extension telephone set according to the second embodiment.

FIG. 8 is a block diagram showing a connection device and a wireless telephone according to the second embodiment.

FIG. 9 is a flowchart showing the operation of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main device, 2 ... External interface circuit, 3 ... Switch circuit, 4 ... Extension interface circuit, 5 ... Tone ROM, 6 ... PB receiver, 7 ... Keyboard, 8 ... Display, 9 ... Control part, 10 ... Extension telephone .

Claims (5)

[Claims] 1. A button telephone system accommodating a plurality of outside lines, a sending means for sending a PB signal to the outside line without capturing the outside line, and a PB signal from the same outside line as the outside line sending the PB signal. A key telephone system, comprising: a receiving unit that performs the operation and a verification unit that verifies whether the transmitted PB signal and the received PB signal match. 2. A button telephone system accommodating a plurality of outside lines, a registration means for registering a telephone number for each outside line, a transmission means for transmitting a telephone number registered by the registration means, and a PB signal from the outside line. A button telephone system comprising: a receiving unit for receiving, a sending unit for sending a PB signal to an outside line, and a verifying unit for verifying whether the sent PB signal matches the received PB signal. 3. The transmitter according to claim 2, wherein the main unit activates the transmitting unit, the transmitting unit transmits a predetermined PB signal to the external line, and the external unit responds to the incoming call within a predetermined time by the receiving unit. A button telephone system characterized in that it has a determining means for determining whether or not to receive a predetermined PB signal. 4. A key telephone system having a dedicated extension telephone and a main unit, a transmitting unit for transmitting a PB signal from the main unit to the extension telephone, and a returning unit for returning voice data from the main unit in the extension telephone. A button telephone system characterized in that it has a receiving means for receiving a PB signal from an extension telephone in a main unit and a verifying means for verifying whether or not the transmitted PB signal and the received PB signal match. 5. A button telephone system having a dedicated extension wireless telephone, a connection device, and a main device, and transmitting means for transmitting a PB signal from the main device to the wireless telephone, and voice data from the main device in the wireless telephone. Returning means, return means for returning voice data from the main device in the connecting device, receiving means for receiving PB signal from the wireless telephone or connecting device in the main device, and transmitting PB
A key telephone system comprising: a verification means for verifying whether or not the signal and the received PB signal match.