JP2500774B2 - Multi-frequency signal / dial pulse signal reception system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PB / D of a time division switch which accommodates a subscriber terminal for transmitting a multi-frequency signal (PB) and a subscriber terminal for transmitting a dial pulse signal (DP).
It relates to the P reception system.

[0002]

2. Description of the Related Art A subscriber terminal for transmitting a PB signal and D
In a conventional time division exchange accommodating a subscriber terminal which sends out a P signal, when the subscriber terminal makes a call, the subscriber circuit detects the call by a known means and transmits it to the central control unit. The central control unit, to which this call detection is transmitted, identifies the PB / DP signaling system of the calling subscriber terminal by the subscriber information.

The PB signal or the DP signal from the subscriber terminal is digitized by the subscriber circuit, and the PB receiving circuit (PBR) or DP receiving circuit (PBR) (PBR) or the DP receiving circuit (PBR) which is vacant via the time switch is provided by each individual transmission means. DPR)
Connected to. The numerical signal received by this PBR or DPR is notified to the central controller.

[0004]

In this conventional time division exchange, the central control unit to which the call detection is transmitted identifies the PB / DP signal system of the calling subscriber terminal by the subscriber information and joins. PB signal or DP signal from the operator terminal
Since they are connected to the vacant PB receiving circuit (PBR) or DP receiving circuit (DPR) via the time switch by each individual transmission means, there is a problem that a lot of processing is required for this reception preparation. It was

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a PB / DP receiving system that reduces the processing required for preparation for receiving a PB signal or a DP signal and shortens the time.

[0006]

A multi-frequency signal / dial pulse signal receiving system of the present invention accommodates a subscriber terminal for transmitting a multi-frequency signal (PB) and a subscriber terminal for transmitting a dial pulse signal (DP). Multiple subscriber circuits that
In a time division exchange having a common section for accommodating subscriber circuits and collecting a common digit signal, a PB signal receiving means for receiving the PB signal and converting it into a single digit digit signal, and receiving the DP signal And a DP signal receiving means for converting the digit signal into a one-digit numerical signal, the numeric signal from the PB signal receiving means, and the D signal.
The above-mentioned subscriber terminal is operated by the numerical signal from the P signal receiving means.
Whether the PB signal reception system or the DP signal reception system is determined , the numeric signal from one of the determined receiving means is received, and the one digit digit signal is a numeric signal common to both PB and DP. > Providing a control means for adding a flag to the time slot allocated to each subscriber in the subscriber circuit,
A one-digit number signal with a flag is transmitted from the subscriber circuit to the common unit. Also,
The common section is a flag monitoring section for monitoring a flag added before the one-digit number signal input from the control means in the subscriber circuit, and a one-digit number signal added after the flag is detected. Consists of a normality monitoring unit that recognizes the normality of the data by the catch bit, an address unit that adds the subscriber's position information after checking the normality, and a queue circuit that stores the numeric signal with this position information. It was done.

[0007]

According to the present invention, the PB signal or the DP signal from the subscriber terminal is received by the subscriber circuit without passing through the central control unit, and the common part is equivalent to one digit of the PB signal / DP signal. Transmits numeric signals.

[0008]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention.
In FIG. 1, 1 is a subscriber terminal that sends out a PB signal or a DP signal, and 2 ₁ ... 2 _n are subscriber terminals 1 ...
The plurality of subscriber circuits 3 that accommodate the ... Are common parts that transmit and receive signals to and from the plurality of subscriber circuits 2 ₁ to 2 _n .

The subscriber circuit 2 ₁ and the monitoring unit 4 for detecting on-hook and off-hook of the subscriber terminal 1 and A / A
A D conversion unit 5, a PB receiving unit 6 that constitutes a PB signal receiving unit that receives a PB signal and converts it into a one-digit number signal, and a DP signal receiving unit that receives a DP signal and convert it into a one-digit number signal. The PB / DP signal system of the subscriber terminal is judged by the numerical signals from the DP receiving section 7 and the DP signal receiving means and the numerical signal from the DP signal receiving means, and the judged numerical signal from the receiving means is received, It has a control unit 8 which constitutes a control means for adding a flag to a one-digit number signal and inserting it into a time slot assigned to each subscriber. And it is configured to transmit the number signal of an order of magnitude by adding a flag from the subscriber circuit 2 ₁ to 2 _n to the common unit 3.

On the other hand, the common unit 3 is a common unit that receives a one-digit numerical signal to which a flag and a protection bit are added from the subscriber circuits 2 ₁ to 2 _n . The common unit 3 monitors a flag. It has a unit 9 and a normality monitoring unit 10 for confirming the normality of data by means of a protection bit, an address unit 11 for adding subscriber position information, and a queue circuit 12 for accumulating numerical information.

Next, the operation of the embodiment shown in FIG. 1 will be described with reference to FIG.
Will be described with reference to. FIG. 2 is a block diagram of signals from the subscriber circuit to the common section in FIG. First, the subscriber terminal 1
When the call is issued by the monitoring unit 4, the monitoring unit 4 detects this and the control unit 8
To notify. The control unit 8 receiving the call detection detects the PB receiving unit 6
Both the DP receiver 7 and the DP receiver 7 are put into the reception processing state. Then, when the subscriber terminal 1 is a terminal which sends out a PB signal, the PB signal is sent to the 2
The line-to-line conversion is performed, the A / D conversion unit 5 performs analog / digital conversion, and the PB reception unit 6 receives. This PB
The receiver 6 converts the PB signal into a one-digit number signal and notifies the controller 8 of it.

Next, when the controller 8 receives the numerical signal from the PB receiver 6, it cancels the reception processing state of the DP receiver 7. If the subscriber terminal 1 is a terminal that sends out a DP signal, the DP signal is detected by the monitoring unit 4,
It is received by the receiving unit 7. Then, this DP receiver 7 is D
The P signal is converted into a one-digit number signal by pulse counting and interdigit detection, and the control section 8 is notified. When the controller 8 receives the numerical signal from the DP receiver 7, it cancels the reception processing state of the PB receiver 6. Here, the numeric signal received by the control unit 8 from the PB receiving unit 6 or the DP receiving unit 7 is a common signal.

Next, when the control unit 8 receives a one-digit number signal, it adds a flag and a protection bit, inserts it into a time slot assigned to each subscriber, and transmits it to the common unit 3. Then, the digit signal for one digit to which the flag and the protection bit are added has a form as shown in FIG. 2, for example. Then, the common unit 3 receives the one-digit number signal added with the flag and the protection bit from the subscriber circuit 2, and the flag monitoring unit 9 monitors the flag. When the flag monitoring unit 9 detects a flag, the normality monitoring unit 10 confirms the normality of the data by the protection bit.

Next, when the normality monitoring unit 10 confirms that the signal is a normal number signal, the address unit 11 adds the position information of the subscriber, and the number information to which the position information is added is added to the queue circuit. Accumulate to 12. The numerical information accumulated in the cue circuit 12 is sequentially notified to a central controller (not shown). It should be noted that FIG. 1 is merely an embodiment of the present invention, and the form of the numeral signal in FIG. 2 is not limited to that shown in the drawing, and the method of receiving the numeral signal in the common unit 3 is also illustrated. It is not limited to one.

[0015]

As described above, according to the present invention, the PB signal or the DP signal from the subscriber terminal is received by the subscriber circuit without passing through the central control unit, and the PB signal /
Since the digit signal for one digit common to the DP signal is transmitted, the central control unit to which the call detection is transmitted identifies the PB / DP signal system of the calling subscriber terminal by the subscriber information, Since it is not necessary to connect the PB signal or the DP signal from the subscriber terminal to the vacant PB receiving circuit or the DP receiving circuit via the time switch by each individual transmission means, the processing for this reception preparation is performed. It has an effect that it can be reduced and the time can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a configuration diagram of a signal from a subscriber circuit to a common unit in FIG.

[Explanation of symbols]

1 subscriber terminal 2 ₁ to 2 _n subscriber circuit 3 common section 6 PB receiver 7 DP receiver 8 controller

Claims (2)

(57) [Claims] 1. A plurality of subscriber circuits accommodating a subscriber terminal for transmitting a multi-frequency signal and a subscriber terminal for transmitting a dial pulse signal, and a common number for accommodating these subscriber circuits.
In a time-division exchange having a common unit for collecting a character signal, a multi-frequency signal receiving means for receiving the multi-frequency signal and converting it into a one-digit number signal; and a one-digit number signal for receiving the dial pulse signal. And a dial pulse signal receiving means, a numerical signal from the multi-frequency signal receiving means and a numerical signal from the dial pulse signal receiving means.
Indicates that but determines <br/> or multi-frequency signal receiving method or dial pulse signal receiving system receives the number signal from the determination was one of the receiving means, a numeric signal to the numerical signals of an order of magnitude
A control means for adding a flag common to both PB and DP and inserting it into a time slot assigned to each subscriber is provided in the subscriber circuit, and a one-digit numerical signal with the flag is added from the subscriber circuit. A multi-frequency signal / dial pulse signal reception system characterized in that the signal is transmitted to the common part. 2. The flag detecting unit according to claim 1, wherein the common unit monitors a flag added before a digit signal for one digit input from the control means in the subscriber circuit, and a flag detecting unit. A normality monitoring unit that later recognizes the normality of data by a protection bit added after a digit signal for one digit, an address unit that adds the position information of the subscriber after confirming the normality, and this position information are added. A multi-frequency signal / dial pulse signal reception system characterized by comprising a cue circuit for accumulating digit signals.