JPH0314355A - Method for originating call trunk line for non-telephone system terminal, and its terminal - Google Patents

Abstract

PURPOSE:To connect a non-telephone system terminal to an opposite terminal subscribed to a public telephone network by automatic calling by allowing the non-telephone system terminal to detect the state of an automatic private branch exchange, and at the time of detecting abnormality, sending an opposite number selecting signal without sending originating call trunk line number from the non-telephone system terminal. CONSTITUTION:An automatic private branch exchange(PBX) fault information detecting circuit 13 receives PBX fault information from a CPU 22 in a PBX 20 through an information transfer line 50 and detects the state (normal/fault) of the PBX 20 based upon the receiving state of the PBX fault information. Namely, when a fault occurs in the PBX 20, an opposite subscriber's number is read out from a memory 15 without executing '0' dialing indicating originating call trunk line number and sends a selection signal corresponding to the read number. When the PBX 20 is normal, the trunk line is reserved by '0' dialing and then the opposite subscriber's number selecting signal is sent from the memory 15. Thus, the prescribed opposite terminal subscribed to the public telephone network can be connected by automatic calling.

Description

[Detailed Description of the Invention] <Industrial Application Fields> This invention, when making a central office line call from a non-telephone terminal, transmits a selection signal to be sent from the non-telephone terminal to an automated system that accommodates the non-telephone terminal. The present invention relates to a method and a terminal for making a call to a central office line by making a decision based on the situation of an automatic private exchange stand. (Prior technology) Conventionally, as shown in Fig. Some of the non-telephone terminals 1 are connected to the extension circuit 3 of the telephone exchange 2 (PBX).
The other party's terminal 7 that is subscribed to 1 (joined on the right) Example: ABCX
XXX), it sends a one-digit or two-digit number @1- to the PBX 2 as a central office line transmission number. This number transmission for central office line transmission is usually a one-digit IJ O 8
9 is performed using the Gussi E-button signal or dial signal, and is called the "'0" dial.dd O
After dialing 09, the line of the public telephone network 6, that is, the central office line, is acquired via the PBX 2, and the outgoing call from the public telephone network 6 is confirmed. Subsequently, number g of the other party's terminal 7; 8B
A connection request is made to the public telephone network 6 by sending CX X

Among the above-mentioned operations, the operations at the non-telephone terminal 1 are often performed automatically and are equipped with a function for automatically sending selected messages.

On the other hand, as shown in Fig. 4, if the PBX 2 stops functioning due to a failure, the central office line and the waiting extension terminal are either stored in the PBX 2 or moved outside of it! 2.2: Two straight cut-length circuits 8 are used to provide direct contact, ensuring a minimum communication function. In this case, to call the other party's terminal 7 subscribed to the public telephone network 6, there is no need to use the uO IT dial, and you can directly call the other party's subscriber number: A B C
Dial X X X.

As explained above, in order to send a selection signal for calling a destination terminal 7 subscribed to the public telephone network 6 from a non-telephone terminal 1 connected to the extension circuit side of the PBX 2, the PBX 2 State '6? (normal, faulty) (There are two methods for this. Installing this direct switching circuit 8 is a known matter and is a method that has been used since the commercialization of PBX. be.

(Problems to be Solved by the Invention) However, the conventional non-telephone equipment 1 is configured with a selective signal transmission function on the premise that the PBX 2 is in failure. Even if the PBX 2 connects a specific extension terminal 1 to the central office line through the direct disconnection circuit 8, and the specific extension terminal has a selective transmission function, transmission is possible. Since the selection signal is configured so that the PBX 2 is sent when it is normal, it is not possible to connect to the public telephone network (there is a drawback that it is not possible to connect to the intended destination terminal by manual calling). ,=.

Even with telephone terminals, when there is a problem, it is common to be unable to request a central office line connection using the ``O'' dial. It is possible to deal with this by manually dialing the number. However, in the case of non-telephone terminals that are designed for unmanned operation, human intervention is not possible and it is not possible to deal with PBX failures.

The problem to be solved by this invention is that when a PBX fails (the problem is that a non-telephone terminal housed in the PBX extension circuit cannot connect to a counterpart terminal that is subscribed to the public telephone network by white call). The goal is to eliminate the

(Means for Solving the Problems) A central office line transmission h method for a non-telephone terminal according to the present invention 1. If there is a fault, then the central line. ! ：When making a central line call from a non-telephone terminal housed in the same line of an automatic private exchange system that has the function of directly connecting to a specific extension terminal, 2. The status of the exchange is detected by a non-telephone terminal, and if normality is detected, the non-telephone terminal sends out digits for calling the central office line, and after capturing the central telephone line, sends out a selection signal g for the other party's number H, and detects an abnormality. The 16th feature is that if detected, the non-telephone terminal does not send out the 10 digits of the central office line, but instead sends out a selection signal for the number and month of the other party's number.

In addition, as a terminal used to carry out the above method, a non-wire circuit housed in a wire circuit of a white shift type direction exchange, which has a function of directly connecting a terminal on the flesh side of a central line in the event of a failure, is used. A telephone terminal, which detects the state of the manual private branch exchange.
When the BX fault information detection unit and the previous 72 P B When the fault information detection unit detects an abnormality in the 0 shift type internal exchange @ machine, it is determined whether or not to send out the central line transmission m@ character. The device is characterized in that it includes a determining section k.

(Operation) The non-telephone terminal constantly monitors the status of the automatic private branch exchange using the PBX failure information detection unit. When a non-telephone terminal makes a call to a central office line, it first detects the status of the automatic exchange, and based on the detection result automatically determines and selects what selection signal to send.

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

FIG. 1 is a configuration diagram of a non-telephone terminal and a switching network to which it is connected. In FIG. 1, 10 is a non-telephone terminal, 11
1 is a control circuit built in the non-telephone terminal 10, 12 is a network control circuit, 13 is a PBX failure information detection unit that detects the status (normality, failure) of the automatic private branch exchange;
It can also be configured to form a part of 1. Reference numeral 14 denotes a selection signal determination and transmission unit that determines and selects what selection signal to send based on the detection result of the PBX failure information detection unit 13, and 15 a memo 1 and 20 in which the subscriber number of the partner terminal is stored in advance. is an automatic private branch exchange (PBX), and accommodates the non-telephone terminal 10 in its extension circuit.

Reference numeral 21 denotes a direct switching circuit that directly connects a specific extension terminal to the central office line in the event of a PBX failure, and the non-telephone terminal 10 is accommodated as the specific extension terminal. 30 is a public telephone network, and 40 is a partner terminal connected to the public telephone network 30.

Reference numeral 50 is an information transfer path provided between the PBX 20 and the PBX failure information detection unit 13, and transmits PBX failure information. In the example shown in FIG. 1, the PBX fault information transfer source is the PBX.
20 as the central processing unit (CPU) 22, this could be a monitoring device for the PBX 20, related equipment around the PBX (for example, a central monitoring device, etc.), or use of a vacant contact in the direct switching circuit 21, etc. .

FIG. 2 is a flowchart according to an embodiment of the present invention when a selection signal sent from a non-telephone terminal accommodating a PBX extension is automatically determined and selected to make a call to a central office line.

The operation will be explained below with reference to FIGS. 1 and 2.

The control circuit 11 instructs the network control circuit 12 when the central office line transmission is activated by an external signal or a built-in timer. PBX failure information detection circuit 13 is PBX2
PBX fault information is received from the CPU 22 of No. 0 via the information transfer path 50, and the status (normal, faulty) of the PBX 20 is detected based on the receiving state of the PBX fault information.

Based on this detection result, the selection signal determination sending unit 14 of the control circuit 11 automatically determines whether to send out a selection signal for the central office line transmission digits and the subscriber number, or to send a selection signal that does not include the central office line transmission digits. Judgment and selection. When the network control circuit 12 receives an instruction to call the central office line, it turns the line on.
IIOON, DC loop circuit formation), and when the tone arrives, a selection signal is sent out based on the instruction of the control circuit 11 that has been selected as described above.

That is, if the PBX 20 is in trouble, the subscriber number of the other party is read out from the memory 14 and a selection signal corresponding to this number is sent out, without dialing the numbers for calling the central office line (0, 11).

If the PBX 20 is normal, it sends out a selection signal for the subscriber number stored in the memory 14 after performing O II dialing and acquiring the office line.

The subsequent operations are performed using a known communication method using a telephone line.

{Effects of the Invention} As explained above, according to the present invention, a non-telephone terminal intended for unmanned operation is accommodated in the extension circuit of the PBX, and
Regardless of the status of the BX (normal or faulty), it can be used to automatically connect to a partner terminal subscribed to the public telephone network.

Furthermore, the present invention is applicable not only to non-telephone terminals for building management, but also to
It can be applied to all non-telephone terminals such as facsimiles, personal computers, and data terminals.

[Brief explanation of drawings]

Fig. 1 is a connection configuration diagram illustrating an embodiment of a non-telephone terminal according to the present invention, Fig. 2 is a flowchart of an embodiment of the central office line origination method according to the present invention, and Fig. 3 is a diagram showing a normal PBX. Figure 4 is a diagram of the central office line transmission system when a PBX failure occurs. 10... Non-telephone terminal, 11... Control circuit, 12.
. . . Network control circuit, 13 . . . 1 13X failure information detection unit, 14 .・
...Public telephone network, 40...Destination terminal, 50...Information transfer closed.

Claims (2)

[Claims] (1) When making a call to a central office line from a non-telephone terminal housed in the extension circuit of an automatic private branch exchange that has the function of directly connecting the central office line to a specific extension terminal in the event of a failure, the automatic The status of the private branch exchange is detected by a non-telephone terminal, and if normality is detected, the non-telephone terminal sends out digits for calling the central office line, and after capturing the central telephone line, sends out a selection signal for the other party's number, and detects an abnormality. Then, a non-telephone terminal transmits a selection signal for the other party's number without transmitting digits for transmitting a central telephone number from the non-telephone terminal. (2) A non-telephone terminal housed in the extension circuit of an automatic private branch exchange that has the function of directly connecting a central office line to a specific extension terminal in the event of a failure, which a PBX failure information detection unit that detects; and a PBX failure information detection unit that transmits a selection signal for a central office line calling number and a partner number when the PBX failure information detection unit detects normality of the automatic private branch exchange; and a selection signal transmission determination unit that determines and selects whether or not to transmit a selection signal for the destination number without transmitting central line transmission digits when an abnormality in the automatic private branch exchange is detected. Non-telephone terminal.