JPH0425261A - Automatic dialing terminal equipment - Google Patents

Abstract

PURPOSE:To improve the operability by varying a type of a selection signal and making redialing when no reply signal comes from a destination and using in succeeding dialing the type of the selection signal by which the reply signal is received in a preceding dialing. CONSTITUTION:The user enters information for a ROM 12a in which a program is stored, and for a RAM 12b storing a destination telephone number, a line class and a dialing time or the like by using a setting device 18 at the installation of the terminal equipment. When a reply signal is returned from a host center 20 at the automatic dialing, it is discriminated that the host center 20 and the line are connected. That is, the connection of the destination and the line is detected, and after the automatic dialing, when the destination and the line are not connected, other type of selection signal is used for redialing, and if no reply signal is detected even after the redialing, the type of the selection signal is being changed sequentially for succeeding redialing and the type of the selection signal when the reply signal is detected is stored. Thus, it is not required for the user to set the type of the selection signal and the type of the selection signal is set automatically thereby improving the operability.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an automatic calling terminal device, and particularly to automatic setting of the type of selection signal to be sent when making a call in a terminal device connected to an analog telephone line. It is.

(Prior Art) Conventionally, as this type of terminal device, there is an automatic meter reading terminal device for LP gas or the like that is installed together with a telephone in a general household.

FIG. 4 is a block diagram of such a conventional terminal device.

Reference numeral 1 is a metering sensor that measures the flow rate of gas, and reference 2 is a memory that stores the telephone number of the destination, line type, call time, etc. When installing the terminal device, this information can be input manually using the setting device 8. enters. 3 is a clock, 4 is a modem used for communicating with the host center, and 5 is an NCU, which automatically makes calls based on instructions from the CPU 6.

The operation of this terminal device will be explained below.

(1) The CPU 6 manages gas usage equipment and the like based on measurement data sent from the metering sensor 1. It also compares the preset call time with the current time, and automatically makes a call when the call time arrives.

(2) When making an automatic call, the telephone number and selected signal type are set according to preset data.

(3) Once the line is connected to the center, data such as gas usage is sent to the center.

(4) When making an automatic call, the center may be busy, so if you are unable to communicate with the center, it is necessary to make the call again several times.

As described above, conventionally, the type of line on which a terminal device is installed (the type of selection signal to be sent) has been set by a person.

(Problem N to be solved by the invention) However, in the conventional method, manual settings are required when installing the terminal device, and if there is a setting error, normal calling operation cannot be performed.

Another disadvantage is that reconfiguration is required when the line type is changed.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems, eliminate the need for manual settings, and provide an automatic calling terminal device with excellent operability.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides, in a calling terminal device connected to an analog telephone line, a calling means for making a call using two or more types of selection signals, and a calling means for making a call using two or more types of selection signals; After sending the
means for detecting a response signal when the line is connected to the destination; means for storing the type of selection signal when the response signal is detected; and means for storing a selection signal of a different type when the response signal cannot be detected. There is a means for retransmitting, and when a response signal cannot be detected after the transmission, the type of selection signal is sequentially changed and transmitted, and the type of selection signal when the response signal is detected is memorized. It is something.

(Function) According to the present invention, as described above, it is possible to detect that the destination and the line are connected, and when the destination and the line are not connected after automatic dialing, a different type of selection signal is sent again. After sending, if a response signal cannot be detected, the selection signal type is changed sequentially and the selection signal type is memorized. There is no need to manually set the signal type, and the selection signal type can be automatically set, thereby improving operability.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an automatic calling terminal device showing an embodiment of the present invention.

In the figure, 11 is a measurement sensor that measures the flow rate of gas, and 12a
12b is a ROM in which the program is built-in, and 12b is a RAM in which the destination telephone number, line type, call time, etc. are stored.
This information is entered by a person using the setting device 18 when installing the terminal. 13 is a clock, 14 is a modem used to communicate with the upper center, 15 is an NCU, and CPU1
It will automatically make a call based on the command in step 6. 17 is an interface circuit of the setting device 18, 19 is a telephone line, and 20 is an upper center.

In addition, the NCU 15 includes a PB oscillator 15a, a transformer 15b, a dial pulse l relay 15, as shown in FIG.
c, 15d, telephone switching relay 15e, etc.

After the automatic call, if a response signal is returned from the host center 20,
It is assumed that it is determined that the line is connected to the upper center 20. Since the response signal uses a modem carrier, the response signal can be detected by the modem 14.

FIG. 3 is a flowchart when the automatic calling terminal device of the present invention makes an automatic call.

(1) Check for outgoing calls (step ■).

(2) Determine whether or not it is the first call (a state in which no response signal has been detected) (step ■), and
If it is the third time to make a call, first make a call using the PB (button button) (step ■).

At this time, it is determined whether a response signal has been detected (step ■
), and if a response signal is detected as a result, the type is stored as PB (step 2).

(3) If the response signal cannot be detected in step ①, next, DP (dial pulse) 20p
Make a call using pS (step ■). At this time, it is determined whether or not a response signal has been detected (step 2), and if a response signal has been detected, the type is stored as DP20 (step 2).

(4) If no response signal is detected in step (2), then a call is made with a DP (dial pulse) of 10 pps (step (2)). At this time, it is determined whether or not a response signal is detected (step [phase]). As a result, if a response signal is detected, the type is stored as DPIO (
Step ■).

(5) In this way, if a response signal cannot be detected after transmission, the selection signal type is sequentially changed and transmitted, and the type when a response signal is detected is memorized.

Note that even if the transmission center transmits with the correct selected signal type due to busy conditions, etc., a response signal may not be detected, so several attempts (retransmission) are required (step @).

(6) After detecting a response signal once in the step (2), a call is made according to the stored type (step (2)).

(7) Make a call with type PB (step o), and as a result, determine whether or not a response signal is detected (step ■);
As a result, if a response signal is detected, the type is stored as PB (step ■). In the step (■),
If a response signal cannot be detected, repeat attempts (retransmission) are performed several times (step @). As a result, if it is a retry over, it means that the response signal could not be detected, and next, it transmits at DP 20pps (step
). At this time, it is determined whether a response signal is detected (step @)), and as a result, if a response signal is detected,
The type is stored as DP20 (step @). If no response signal is detected in the step (2), several attempts (retransmission) are made (step @). As a result, if it is a retry over, it means that the response signal could not be detected, and next, a DPlops is transmitted (step @). At this time, it is determined whether or not a response signal is detected (step 0). As a result, when a response signal is detected, the type is stored as DPIO (step @l). If the signal cannot be detected, try (retransmit) several times (step @).

In this way, normally, once the type is memorized, calls can be made in accordance with it from now on, but the line type may be changed. If a response signal is not detected even though a call is made using the stored type in preparation for that time, it is necessary to change the line type and make the call again. However, it is more likely that a response signal cannot be detected because the center is busy than when a response signal cannot be detected because the line type has been changed. It is appropriate to change the type.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As described above in detail, according to the present invention, when there is no response signal from the destination, the type of selection signal is changed and the transmission is made again, and the next transmission is based on the previous response signal. This is done based on the selection signal type when the selection signal is detected, so there is no need to manually set the selection signal type, and the selection signal type can be set automatically, improving operability. be able to.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an automatic calling terminal device showing an embodiment of the present invention, FIG. 2 is a configuration diagram of the NCU of the automatic calling terminal device, and FIG. 3 is a block diagram of an automatic calling terminal device according to an embodiment of the present invention. Flowchart, FIG. 4 is a block diagram of a conventional terminal device. 11...Measuring sensor, 12a・ROM, 12b・
RAM, 13...Clock, 14...Modem, 15...
・NCU, 15a...PB oscillator, 15b...Transformer, 15c, 15d...Dial pulse sending relay, 15e...Telephone switching relay, 16...CPU,
17... Interface circuit, 18... Setting device, 1
9...Telephone line, 20...Upper center. Patent Applicant: Oki Electric Industry Co., Ltd. Agent Patent Attorney: Mamoru Shimizu (1 other person) Fig. 2 Active transmitting device, A/CU /) JA [Z + Fig. 2

Claims (1)

[Scope of Claims] A calling terminal device connected to an analog telephone line, comprising: (a) a calling means for making a call using two or more types of selection signals; and (b)
) means for detecting a response signal when the line is connected to the destination after the transmission from the transmission means; (c) means for storing the type of selection signal when the response signal is detected; (d) ) means for re-transmitting with a different type of selection signal when the response signal cannot be detected; and (e) means for re-transmitting with a different type of selection signal when the response signal cannot be detected after said re-transmission, sequentially transmitting with different types of selection signals. An automatic calling terminal device characterized in that the type of selected signal when a response signal is detected is stored.