JPH03296393A - Telephone exchange - Google Patents

Abstract

PURPOSE:To match the operating mode of a telephone exchange with the type of a contract line automatically in response to the discrimination of the type of the contract line based on a dial signal inputted from a telephone set by providing a detection means for detecting type of an input dial signal and a mode setting means to the telephone exchange. CONSTITUTION:A telephone exchange A is provided with a detection means detecting whether a dial signal inputted from a telephone set is a PB signal or a DP signal every time external line dialing is implemented from the telephone set and a mode setting means selecting either the PB mode or the DP mode while matching the operating mode of the telephone exchange A in matching with the type of the dial signal as the result of detection of the detection means. The function of the detection means is acted by DP detection circuits 21-23 and a PB receiver 13 and the function of the mode setting means is acted by a control circuit 11. The control circuit 11 discriminates the type of the contract line from the dial signal inputted from the telephone set at external line dialing and the operating mode of the telephone exchange A is matched automatically with the type of the contract line accordingly.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a home telephone switching device that switches and forms communication paths between external lines and internal lines, or between internal lines, and enables external and internal calls using commercially available telephones. [Prior art 1 The system configuration of this type of telephone exchange*I is shown in FIG.
This telephone exchange device is connected to a telephone exchange 4flA via an external line 11 via a disconnector G and a protector H,
This telephone exchange mA has extension 12 and control #! It consists of a plurality of telephones (1) and 6) connected to each other and a commercially available telephone WIC connected thereto in a detachable manner.
1i 1 l and extension 12 or between extensions 12, and connect the telephone m connected to telephone outlet B.
c is used to make external and internal calls. In addition, in this telephone exchange apparatus, a door phone D is connected to a telephone exchange A through a telephone line 1, and a door phone call can also be made using the telephone WIC. Each telephone outlet (B) is provided with a monocular jack M, through which a general commercially available telephone C can be detachably connected. This telephone outlet B also has a speaker SP for reproducing notification signals such as an extension ringing tone or a doorphone ringing tone sent via the control line 1. A light-emitting display section L that distinguishes the display signal, which is a voltage signal sent through the
a. Lb, and the speaker SP and light emitting indicators L& and Lb perform notification and display operations. Note that the volume of the speaker SP can be adjusted using a sound adjustment switch v s 't'*y. [Problems to be Solved by the Invention] By the way, in consideration of the fact that the type of telephone line subscribed to by the user (push-button line contract and dial line contract) changes in the conventional telephone exchange device of this type, telephone exchange A
A mode setting switch is provided for switching the operation mode between push button (PB) mode and dial pulse (DP) mode. However, if the user does not know that it is necessary to change the above mode setting switch when the line contract changes, the telephone exchange equipment will not be usable, especially when the user changes. This may cause problems. The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a telephone exchange device that can automatically adjust the operating mode of the telephone exchange to the type of contracted line. .

[Means to solve the problem]

In order to achieve the above object, the present invention detects whether the dial signal input from the telephone is a push-button signal, a dial, or a pulse signal, each time an outside call operation is performed from the telephone. and mode setting means for setting the operating mode of the telephone exchange to either a push button mode or a dial pulse mode in accordance with the type of dial signal as a detection result of the detection means. . However, if you simply set the operating mode of the telephone exchange to the type of dial signal input from the telephone when making an outside call as described above, if a power outage etc. occurs after setting the mode, the operating mode of the telephone exchange will change. To prevent this, there is a possibility that the line will not match the line type, so in order to prevent this, a push button signal sending means that sends a push button signal with less than the number of valid digits to the outside line when the power is turned on, and detects the outside line dial tone from the central office. The telephone exchange is equipped with an outside line tone inspection means to check the above-mentioned push when the power is turned on. If the outside line dial tone stops when the button signal is sent, the mode setting means sets the operating mode of the telephone exchange to push button mode, and if the outside line dial tone does not stop, it sets it to dial pulse mode. preferable. [Function] By having the above configuration, the present invention determines the type of contracted line from the dial signal input from the telephone when making an outside call, and automatically changes the operating mode of the telephone exchange to the contracted line accordingly. This allows it to be adapted to the type. [Embodiment 1 An embodiment of the present invention is shown in FIGS. 1 to 6. First, the circuit configuration and operation of the telephone exchange mA to which the present invention is applied will be explained. As shown in FIG. 5, the telephone exchange 11A of this embodiment has relay contacts "1 to r1" for each extension 12 to which the telephone C is connected.
．． 7-tsuku dial pulse (DP) detection circuit 21-2.
and communication current supply circuit 4. ~4. It further includes an incoming call detection circuit 5, a DC closing circuit 3, a DP generation circuit 6 for making an outside line call with a dial pulse, a push button (PB) guyara 7 for making an outside line call with a push button tone, and detecting an outside line dial tone. An outside line dial tone detection circuit 8, a hold tone sending circuit 9 that sends out a hold tone, a cross point switch 10 that sets a call route, a PB receiver 12, 13 that receives a push l button signal, and a voice that emits various notification tones. Signal generation circuit 17, display control circuit 18 for displaying call status at telephone outlet (telephone outlet) B, amplifiers AMP to AMP diode bridge DB, dates G, -G3, and exit of control information signals for each of the above circuits and circuits to be described later. The control circuit 11 includes a CPU that performs control and signal determination processing. Furthermore, this telephone exchange v! The IA includes a door phone call detection circuit 141゜]4□ for detecting a call from the door phone D and a door phone call circuit 15. Further, although not shown in FIG. 7, this telephone exchange 11A can also be connected to a security device and an emergency push button, so that an alarm can be sounded from the telephone outlet B when an abnormality occurs. Note that the abnormality detection signal from the security device is detected by the security signal detection circuit 16. The operation of this telephone exchange device will be explained. In the telephone exchange A, when the power is turned on and the system starts, the control circuit 11 first makes initial settings, then enters a standby state, determines off-hook, and then determines the presence or absence of communication on the outside line layer and processes outside line calls. It determines the presence or absence of a doorphone call, processes the doorphone call, determines the presence or absence of an extension call, processes the extension call, and processes an outside call. Now, when the handset of any phone fiC is picked up, that phone 8ICfJt connected * l 2
A hook/DP detection circuit 2 provided in the DP detects off-hook and outputs a detection signal to the control circuit 11. At this time, the control circuit 11 normally switches the relay contacts rI to r to the crosspoint switch 10 side. A pseudo call signal of 400 Hz is sent to the off-hook telephone WiC through the extension line 12, and at the same time, the display control circuit 18 is controlled to light up the light-emitting display section Lm for indicating that an outside line call is in progress at each telephone outlet B. The transmission of this #j1tX transmission signal continues until the input of the dial signal, and when the first dial signal is detected by the 7tsuku/DP detection circuit 2, the control circuit 11 stops outputting the pseudo transmission signal and transmits the dial data. is stored in the built-in FIFO type buffer memory, and at the same time, the built-in 3-second timer is operated. When the second dial signal is detected while this timer is operating, the control circuit 11 determines that it is an outside line call, performs outside line call processing, and if the second dial signal is not input within 3 seconds. It determines that the call is an extension call and performs extension call processing. Now, in the case of making an outside line call, the control circuit 11 sequentially stores the input dial signals in the buffer memory, operates the DC connection circuit 3, and the outside line dial tone detection circuit 8 detects the outside line dial tone. When detected, the dial data stored in the buffer 7 memory is sequentially read out from the first dial data, and the dial pulse generating circuit 6 is operated to sequentially send dial signals to the outside line II. Then, when the dial data stored in the buffer memory runs out and a certain period of time has passed, the off-hook telephone CfJt connects the connected extension 12 to an outside line! , relay dissemination, to follow #? ! . Next, in the case of an extension call, when 3 seconds have elapsed after inputting the first dial signal, the control circuit 11 determines that the call is an extension call, and the telephone WIC The light-emitting display section La of each telephone outlet B, which has been lit since the 7th turn off, indicates that an outside line call is in progress.
is turned off, and at the same time, the light-emitting display section Lb, which indicates that an extension call is in progress, is turned on. At the same time, the control diagram @'11 controls the voice signal generation circuit 17 and sends a notification signal for calling an extension to the telephone outlet A)B connected to the telephone aC on the called side.
from the speaker SP of the telephone outlet B to generate an extension ring tone. Note that this notification signal is sent out superimposed on the display signal. Then, by this extension ring tone, the telephone outlet)BIB! When the hooked handset of telephone C is picked up, the hook/DP detection circuit 2
detects this off-hook, and the control circuit 11 detects this off-hook.
The extension ringer is stopped based on the call, and the crosspoint switch 10 connects the extension 12 connected to the telephone C that made the call to the extension 12 connected to the telephone C on the called side to make an extension call. is possible. Next, receiving an outside call will be explained. The incoming external line is detected by the incoming call detection circuit 5, and the output of the incoming call detecting circuit 5 at this time causes the control circuit 11 to switch the relay contacts r to ``, to the external line e, side.In this way, the external line 11 and the extension 6 are connected. When connected, the built-in bell rings in each telephone C. Therefore, if you pick up the handset of telephone C in response to the ringing of the built-in bell of telephone C, you can make an outside call. When the switch is turned off, the control circuit 11 lights up the light-emitting display section Lm of each telephone outlet (B) in accordance with the output of the hook/DP detection circuit 2 to indicate that an outside line call is in progress. During an external call, it is possible to put the external call on hold and make an internal call or a doorbell call.In this case, a dial signal corresponding to the hold is input from the above telephone C during a foreign bank call. Then, the control circuit 11 reads this dial data, disconnects the extension line 12 from the outside line 11, and operates the DC connection circuit 3 to put the outside line 18 t + on hold.Then, the control circuit 11 receives the hold voice signal. The generating circuit 9 is operated to send the hold tone melody to the outside line l via the coupling transformer T.
In addition to informing the outside call party that the call is on hold, it also sends a hold tone melody to each telephone line B to make the user aware that the call is on hold, and at the same time controls the display control circuit 18. Light display part La for use during a call
, Lb are turned on, and a display indicating that the request is on hold is displayed. Now, after entering the above-mentioned hold state, if a dial signal for making an extension call or a doorbell call is input from telephone C, the extension call processing described above or the doorbell call processing described later will be performed, and the extension call or doorbell call will be terminated. It becomes possible. Note that in order to prevent the dial signal input from telephone C during this outside line call from being output to the outside @ 11 +, the DC connection circuit 3 is temporarily closed at the same time as the dial signal is input. be. An extension call or the like that is on hold is terminated by on-hooking telephone C, and returning to the on-hold state by picking up the handset of telephone @C again. If the user wishes to make an outside call again, a dial signal for canceling hold is input from telephone C to cancel the hold. At this time, the control circuit 11 stops the operation of the hold tone sending circuit 9, controls each part to return to the original outside line call state, and returns to the outside line call state. After the call is released from hold, if the call is to be terminated, the telephone C can be turned on-hook. A case in which a doorbell call is received will be described below. When making a call from door phone D, a push button provided on door phone D is pressed. The fact that this push button has been pressed is detected by the doorbell call detection circuit 14, and the control circuit 11 responds to this detection output.
operates the audio signal generation circuit 17 to cause each telephone outlet B to sound a doorbell ring tone. Then, when the handset of any telephone IaC is picked up in response to the doorbell ringing, the telephone WI that was turned off
The control circuit 11 switches the cross-point switch 10 by the output of the hook/DP detection circuit 2 provided on the extension 12 to which C is connected, and connects the telephone C from which the handset has been picked up and the door intercom call circuit 15 to connect it to the door intercom. Enables phone calls. By the way, this doorphone call is made from telephone outlet B even during an outside line call, and when a dial signal identifying doorphone D is input from telephone C after the above-mentioned maintenance in response to this call, the outside line is put on hold. You can make doorbell calls. In addition, in the above explanation, telephone C is a dial-pulse type phone, and the external line l, which is a public telephone line, is a dial-pulse line. However, the external line r1 is a push-button line, and When a button-type telephone *C is used, it operates in the same manner as described above, except that the PB dialer 7 outputs the dial signal and the PB receiver 12-13 detects the dial signal. Below are the features of this example! ! Explain Noh. In this embodiment, a detection means is provided for detecting whether a dial signal input from telephone C is a PB double signal or a DP signal, each time an outside call operation is performed from telephone C, and an operation mode of telephone exchange fiA is provided. to match the type of dial signal as the detection result of the detection means, and set the mode to PB mode and D.
The telephone exchange IIA is provided with a mode setting means for setting the mode to either the P mode or the P mode. In addition, in the telephone exchange A of this embodiment, the *@ of the detection means is set to 7, and the DP detection circuit 2, .
2. and the PB receiver 13, and the control circuit 11 fulfills the function of mode setting means. In this embodiment, as shown in the 70-chart of FIG.
A control circuit 11 determines the type of contracted line from a dial signal input from a telephone set C when making an outside call, and accordingly automatically adjusts the operation mode of the telephone exchange 11A to the type of the contracted line. Here, the reason why the operating mode of telephone exchange A is set when making an outside call as described above is because during a call, even if it is a DP line, there is a possibility that the service using the PB double signal will be received. mistakenly exchanged phone f
Avoid the possibility that the iA operation mode will be set to PB mode (
This is for the purpose of Note that if the type of telephone C and the type of contracted line do not match, the above method will cause the telephone exchange l! The operation mode of A does not match the type of contracted line.However, in the case of telephone @C, the user can easily recognize that it cannot be used unless it matches the contracted line, and furthermore, it does not match the type of contracted line. And actually that phone WIC
Therefore, there is no problem even if the operation mode of the telephone exchange WIA is made to match the type of dial signal of the telephone C as described above. By the way, as mentioned above, the type of dial signal input from the telephone fiA when making an outside call is 1f! If only the operating mode of telephone exchange A is set, if a power outage or the like occurs after setting the mode, there is a risk that the operating mode of telephone exchange A will no longer match the type of line when the power is restored. Therefore,
In order to prevent this, when the power is turned on, a PB signal sending means that sends a push-button signal with less than the number of effective digits to the outside line L, and an outside line dial tone detection means that detects the outside line dial tone from the central office E are installed on the telephone. The control circuit 11 switches the operating mode of telephone exchange A to PB if the outside line dial tone stops when the above push button signal is sent when the power is turned on.
mode, and if the outside line dial tone does not stop, set it to DP mode.
The function of the B signal sending means is performed by the PB guyarer 7, and the function of the outside line dial tone detection means is performed by the outside line dial tone detection circuit 8.
However, even if the present embodiment is adopted, there is no change in the circuit configuration, and it is only necessary to change the software of the control circuit 11. As shown in Fig. 3(a), the concrete operation of the exchange mA is as follows: When the power is turned on, the DC connection circuit 3 is operated to close the line, and the PB dialer 7 dials a single-digit PB multiplication signal. The signal is sent to the outside line 11. At this time, as shown in FIG. 3(e), when the outside line dial tone detection circuit 8 detects that the dial tone of the central office E has stopped (FIG. 3(d)), the control circuit 11 detects that the contract line is It is determined that it is a PB line, and the operation mode of telephone exchange elA is initially set to PB mode. On the other hand, if the outside line dial tone does not stop even if the dial signal is sent, as shown in FIG. D
It is determined that it is a P line, and the operation mode of telephone exchange A is initially set to DP mode. 70- which summarizes the above operations
The chart is shown in Figure 2. [Advantageous Effects of the Invention 1] As described above, the present invention provides a detection means for detecting whether a dial signal inputted from a telephone is a push button signal or a dial pulse signal each time an outside call operation is performed from the telephone. and mode setting means for setting the operating mode of the telephone exchange to either push button mode or dial pulse mode in accordance with the type of dial signal as a detection result of the detection means. It is possible to determine the type of contracted line from the dial signal input from the telephone when making an outside call, and automatically adjust the operating mode of the telephone exchange accordingly. In addition, the telephone exchange is equipped with a push button signal sending means for sending a push button signal of less than the number of valid digits to the outside line when the power is turned on, and an outside line dial tone detection means for detecting the outside line dial tone from the central office. If the outside line dial tone stops when the push button signal is sent, the mode setting means sets the operation mode of the telephone exchange to the push button mode, and if the outside line dial tone does not stop, sets it to the dial pulse mode. By doing so, you can match the operating mode of the telephone exchange to the type of contracted line even when the power is turned on, and prevent the operating mode of the telephone exchange from becoming incompatible with the type of line in the event of a power outage, etc. after setting the mode. .

[Brief explanation of the drawing]

FIG. 1 is a 7a-chart showing a method of setting the operating mode of a telephone exchange according to an embodiment of the present invention, FIG. 2 is a flowchart showing a method of setting the operating mode of the telephone exchange when the power is turned on, and FIG. and Fig. 4 is an output waveform diagram of each part when setting the operating mode of the telephone exchange when the power is turned on, Fig. 5 is a circuit diagram of the telephone exchange, and Fig. 6 is a diagram showing the general operation of the telephone exchange f& ! ! The transition diagram, FIG. 7, is a system configuration diagram of the telephone exchange device. A is a telephone exchange, C is a telephone, i is an outside line, e2 is an extension line, 13 is a control line, 2. ~2. is 7tsuku・DP detection circuit,
7 is a PB dial, 8 is an outside line dial tone detection circuit, 11 is a control circuit, and 13 is a PB cash register/(.

Claims (2)

[Claims] (1) A telephone exchange connected to a telephone office via an outside line;
It consists of a plurality of commercially available telephones connected to this telephone exchange by extension lines, and the telephone exchange switches and forms communication paths between outside lines and extensions, or between extensions, making it possible to make outside and extension calls using the telephone. A telephone exchange apparatus comprising: a detection means for detecting whether a dial signal inputted from the telephone is a push button signal or a dial pulse signal each time an outside call operation is performed from the telephone; and an operation of the telephone exchange. A telephone exchange characterized in that the telephone exchange comprises mode setting means for setting the mode to either push button mode or dial pulse mode in accordance with the type of dial signal as a detection result of the detection means. Device. (2) The telephone exchange is equipped with push-button signal sending means for sending a push-button signal with less than the effective number of digits to the outside line when the power is turned on, and outside-line dial tone detection means for detecting the outside-line dial tone from the central office, and when the power is turned on, If the outside line dial tone stops when the push button signal is sent, the mode setting means sets the operating mode of the telephone exchange to push button mode, and if the outside line dial tone does not stop, sets it to dial pulse mode. The telephone exchange apparatus according to claim 1, characterized in that it comprises: