JPS5828988B2 - Attendant dial/pulse sending method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dial pulse sending method when a relay operator makes a call to a central office line.

In a private branch exchange, there are two conventional methods for sending a dial from a relay stand to a central office line when making a call to a central office line.

One method is to use low-criteria dialing to send dial pulses directly from the relay console operator to the central office line, and the other method is to have the relay console operator press a numeric button (sender button). In this method, the originating sender trunk regenerates the digits into dial pulses and sends them out.

FIG. 1 is a block diagram showing a conventional relay dial pulse regeneration and transmission system.

In the first method, dial pulses generated using the rotary dial of the attendant console ATT are sent to the operator trunk OP.
From T, the signal passes through the route indicated by the dotted line 3 in the switch network NW, and is sent to the office line via the office line trunk COT.

In this case, in electronic exchanges, it is necessary to monitor the dial pulses sent out from the attendant console ATT using the COT and perform billing services based on the numbers, making the software for monitoring the dial pulses complicated. Become.

In the second method, when you press the number button on the relay console ATT,
Enter that number into operator control device ATTC and seat control device PO8.
C and the signal receiving and distributing device S via the scanning device SCN.
RD, detected by central processing unit CPU, central processing unit CP
Under the control from U, the central office line trunk COT and the originating sender trunk O8T are captured, the links of solid lines 1 and 2 of the switch network NW are connected, and the signals of the numeric buttons are expanded by hardware to dial the numbers. - Regenerate the pulse at the originating sender trunk O8T and send it to the office line via the office line trunk COT.

In this case, relaying the tone from the central office to the operator requires a complicated circuit and is not economical, so a pseudo tone is sent from the O8T to the operator, in accordance with the technical standards for private branch exchanges.
3 seconds (3 seconds is specified by the Telecommunications Corporation as sufficient time for the central office exchange to receive dial pulses.

) and then sent a dial pulse to the station.

In that case, the transmitting sound is heard by the operator via link 2 from the originating sender trunk O8T.

It is also necessary to monitor the operator's abandonment of dialing and, when detected, to connect the busy tone trunk BTT and the operator trunk OPT.

After sending a dial pulse to the office line, a reserved link 3 for connection change is made to form a communication path between the office line and the operator.
must be ensured.

In this way, in the second method, there is only one path for calling the central office line.
．． 2.3 are required, and the load on the network NW is large, and the outgoing sender trunk O8T
This method requires a large number of devices and is not economical.

An object of the present invention is to eliminate the drawbacks of the conventional method by providing dial pulses when transmitting dial pulses from an attendant console.
It eliminates the need for a program to monitor pulses, reduces the number of links used for connection, reduces the load on the network, eliminates the need for a calling sender/trunk, and allows the dial tone from the office side to be relayed directly to the operator. No need for 3 second timing, economical attendant dial
The object of the present invention is to provide a pulse regeneration transmission method.

In the present invention, when the operation of a number button by the operator is detected, the above object is achieved by reproducing and transmitting a dial pulse corresponding to the detected number from the operator's trunk provided corresponding to the relay stand.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram of the attendant dial/pulse sending system, and FIGS. 3a and 3b are detailed connection diagrams of the operator trunk in FIG.

When the operator presses the "0" number to make a call to the central office line, the software detects this via the ATTC-PO8C-8CN-8RD and connects the communication path between the operator's trunk OPT and the central office trunk COT. Then, the central office switch is activated from the central office line trunk COT.

The dial tone from the central office exchange is relayed to the operator via the COT-OPT. After hearing the dial tone, the operator presses a numeric button according to the destination number.

This subsequent number button press is detected by the software in the same way, and the outgoing sender function is added to the operator trunk OP.
The dial pulse is regenerated and transmitted by turning on and off the PIJ relay in T according to the corresponding number under the control of the signal distribution device SD or the like.

In the transmitter trunk O8T, excitation is turned on by controlling the current flowing from the signal distribution device SD to the relay winding P, as shown in Figure 3a.

Turn off and contact p.

This opens and closes the loop and sends out dial pulses.

The operator trunk OPT according to the present invention has the same functions as the outgoing sender trunk O8T, as shown in FIG. , the loop from the relay stand ATT to the office line trunk COT is connected to the contact point p.

By opening and closing the dial, a dial pulse is sent out.

In the central office trunk COT, contact p is used to relay dial pulses.

When the loop is opened and closed by , relay A restores its operation accordingly, and its contact a.

Opens and closes the loop leading to the central office line.

In FIG. 2, when the operator presses a number button on the relay console ATT, that number is sent to the operator control device ATTC.

Detected by the signal reception and distribution device SRD and central processing unit CPU via the seat control device posc and scanning device SCN, and then detected by the central processing unit CPU.
is acquired, and a connection is established between the office line trunk COT and the operator trunk OPT corresponding to the relay stand ATT via the switch network NW.

Next, as explained in Fig. 3, under the control of the signal distribution device SD, dial pulses corresponding to numbers are regenerated from the operator trunk OPT and sent to the office line trunk COT. is relayed and sent to the central office line.

In this case, the transmitting sound is created in the operator trunk OPT and is heard by the operator at the relay stand ATT.

In addition, there is no need to monitor whether the operator abandons a call mid-dialing, and the monitoring is done on the central office side, so when a busy tone is sent from the central office due to mid-call abandonment, the busy tone is sent as it is via the same route. Transfer it to the relay stand ATT and let the operator listen to it.

In this way, according to the present invention, the function of the calling sender is provided in the operator's trunk, so that from the point of view of the central office line, the system is exactly the same as the method in which dial pulses are directly sent by the rotary dial. On the other hand, from the control side, the information on the numeric buttons is once passed to the software, so it is exactly the same as the conventional sending method using numeric buttons, and only the advantages of both methods are extracted.

That is, according to the present invention, one link is used for connection.
Since only a book is required, the load on the network is 1/2 that of conventional methods.
Reduced to 3.

In addition, the originating sender trunk is generally used to regenerate and send out dial pulses when making speed dial calls, but in the conventional method, it is necessary to take into account the call volume other than the call volume of the attendant. Although the number of devices increases, according to the present invention, speed dial calls from the relay stand can also be made via the operator's trunk, so the number of equipment for call senders and trunks can be reduced, which is economical.

In addition, in the conventional system, the caller's call abandonment is monitored, and when it is detected, the caller's trunk and busy tone are activated.
Although it is necessary to establish a connection with a trunk, the present invention allows the operator to easily hear the station's busy tone, thereby reducing the number of monitoring operations and connection operations.

Furthermore, when performing billing services, the numbers received using the number buttons can be analyzed immediately, eliminating the need for monitoring on the central office line trunk and requiring only simple software.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a conventional attendant dial/pulse regeneration/sending system, Fig. 2 is a block diagram of an attendant dial/pulse sending system showing an embodiment of the present invention, and Figs. 3 a, b.
2 is a detailed connection diagram of the originating sender trunk and the handler trunk in FIG. 2; FIG. ATT... relay stand, OPT... operator trunk, NW
...Network, COT...Central line trunk, CO.
...Station line, ATTC... Operator control device, PO8C...
・Seat control device, SD...Signal distribution device, SCN...
・Scanning device, SRD...reception distribution device, CPU...
Central processing unit, P... dial/pulse relay relay,
RO~RN...Dial/pulse relay distortion correction resistor,
LLN...Line link network, TLN...
- Trunk link network, LO, Ll... Obstruction line, C... Relay that operates during dial pulse.

Claims (1)

[Claims] 1. In an electronic exchange using a stored program control method, in which calls from a relay stand operator use the numeric buttons on the relay stand, when the operator presses a numeric button on the relay stand, an output is generated by pressing the numeric button. Numerical information is detected by a central processing unit via an operator control device, a seat control device, a scanning device, etc., and dial pulses corresponding to the detected digits are sent to the relay console via a signal distribution device. A relay dial pulse transmission method characterized by reproducing and transmitting from the operator's trunk.