JPS63248260A - Communication equipment - Google Patents

Abstract

PURPOSE:To set a calling system suitable for a communication line connected automatically by calling a prescribed opponent station by using successively the selecting signal different in signal form and signal speed, and controlling a calling means so as to use thereafter the used signal form and signal speed when the opponent station responds. CONSTITUTION:A control part 11, first, switches forcibly contacts 3 and 4 to an off-hook condition and connects a speech network 8 to a line. Continuously, as a selecting signal system, a DTMF (dial tone) mode is selected, and the calling of a special opponent station is executed by a DTMF generator 113. Next, the waiting time of 10 seconds is set by a built-in timer element, and when the polarity inversion of the line is detected by a polarity inverting detecting circuit 13 during the waiting time, it is registered that the DTMF generator 113 is used for the opponent station thereafter. When the polarity inversion is not executed, a dial pulse generator 114 is used, dialing is executed by using the signal speed of 20pps, and when the polarity conversion is executed within 10 seconds, thereafter, the mode is set so as to use the selecting signal of the signal speed of 20pps with the dial pulse generator 114. Hereinafter, the selecting signal is changed and in the same way, the mode is set.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device, and particularly to a communication device that can be connected to a plurality of types of communication lines having different signal formats and signal speeds.

[Conventional technology] Traditionally, communication lines such as telephone lines use dial tone,
Various types of selection signals have been used, such as dial pulses. The dial tone selection signal expresses a telephone number by combining three to four types of tone signals in two groups of low and high ranges, and the dial pulse selection signal expresses the number of intermittent pulses in the DC loop. represents the telephone number. Additionally, speeds of 10pps and 20pps are used for dial pulse lines.

[Problems to be Solved by the Invention] Conventionally, it has been possible to support both dial-tone and dial-pulse lines, and the dial-pulse line has 10
2. Description of the Related Art Telephones or data communication devices configured to be compatible with two communication speeds, pps and 20pps, are known. This type of device uses a configuration in which a slide switch or the like is used to switch a selection signal method that is compatible with the installed telephone line. When installing this type of equipment, it is sufficient to know the type of line in advance, but if the type of line is unknown, try different selection signal methods by switching one after another to match the line and terminal equipment. It required tedious work.

[Means for solving the problem] In order to solve the above problem, the present invention uses different □
In a communication device that includes a plurality of calling means for outputting selection signals of different signal formats or signal speeds to a communication line and calling a partner station, the selection signals of the different signal formats and signal speeds are sequentially used to call a predetermined partner station. A configuration is adopted in which the calling means is controlled to use the signal format and signal speed at that time when the other station answers the call.

[Operation] According to the above configuration, it is possible to automatically call a specific station sequentially using selection signals of different systems, and select a selection signal system suitable for the line based on the response of the partner station.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 1 shows the configuration of a telephone adopting the present invention.
In the figure, symbols Ll and L2 are signal lines connected to the subscriber line, and bridge diodes 1 are connected to these signal lines Ll and L2.
．． 2 to the ringer circuit 6 and the speech network circuit 8 to +6a. Hook switch contacts 3, 4 are inserted between each bridge diode and the circuit 6.8. Contact 3 is normally closed, and contact 4 is a normal oven contact.

These contacts 3.4 are composed of mechanical relays, analog switches, etc., and the transmission/reception distance is 4 m (9, 10 m) as in the past.
) according to the on-hook or off-hook state of the control unit 1.
1. The control unit 11 detects the hook state using the switch 5.

The contacts 3.4 are configured so that they can be forcibly switched by the iM controller 11 regardless of the hook state.

The ringer 6 detects a ringing signal from the line and activates the piezoelectric buzzer 7.
This is a circuit that generates a ring tone by driving the The speech network 8 is composed of a known IC circuit and the like, and includes a 4-wire circuit for the transmitter 9 and the receiver 10, and a 2-wire circuit for the transmitter 9 and receiver 10.
This is for connecting to wire-based lines, and includes side sound protection circuits, etc.

The operation of the speech network 8 is controlled by a control section 11. The control unit 11 is composed of a known one-chip microprocessor or the like, and includes a ROM11. RA used for memorizing phone numbers, etc.
MI 12 and DT generating multi-frequency dialing signals
It integrates an MF generator 113 and the like. DTM
The dialing signal generated by the F generator 113 is transmitted to the line via the speech network 8.

Further, in this embodiment, a dial pulse generator 114 composed of a known dial relay or the like is provided so that it can also be connected to a dial pulse line. Dial pulse generator 114 is capable of generating dial pulses at two rates, 10 PPS and 20 pps, and the generated dial pulses are sent out onto the line via a similar path as described above.

The control unit 11 includes, in order to detect the state of the hook switch,
A normally open switch 5 is connected. Further, a keyboard 12 having an operation panel as shown in FIG. 2 is connected to the control unit 11 in order to control input of telephone numbers and redial operations.

As shown in FIG. 2, the keyboard 12 is used for manually inputting telephone numbers, etc., and includes a numeric keypad 121 consisting of numeric keys from "0" to "9", r zero, and "i" keys, and a numeric keypad 121 that is used for manually inputting telephone numbers. It has a dial key 122 that can be used to make a call again.

Furthermore, in this embodiment, a polarity reversal detection circuit 13 for detecting a polarity reversal of the line is inserted in the signal line Ll for detecting a response from a partner station for control to be described later. This circuit detects when the DC polarities of the signal lines Ll and L2 are switched, and has a known configuration.

FIG. 3 shows a communication control procedure of the control section 11, and the illustrated procedure is stored in the ROMI 11 as a program of the control section 11.

When the device is connected to the line terminal and the power is turned on, the control unit 11 first forcibly switches the contacts 3 and 4 from the state shown in FIG. 1 to the off-hook state in step 510.

That is, the ringer circuit 6 is disconnected from the line, and the speech network 8 is connected to the line. Next, in step Sll, DTMF is selected as the selection signal method used for calling.
(dial tone) mode. That is, D.T.
MF generator 113 is selected as the selection signal generating device.

Next, in step 312, a call is made to a specific partner station. Any station that responds in response to the call to the partner station may be used. In the case of FIG. Telephone numbers, that is, weather forecast telephone numbers are used in Japan. Control unit 11
gives the telephone number data of r177J to the DTMF generator 113 to generate a corresponding dialing signal, which is input to the speech network circuit 8.6 The generated dial tone is transmitted to the line via the speech network circuit. .

Next, in step 313, the built-in timer element is activated.

Alternatively, a waiting time of 10 seconds is set using a timer program or the like, and during that time it is checked whether the polarity reversal detection circuit 13 detects a polarity reversal of the line, that is, a response from the partner station. If there is a polarity reversal within 10 seconds,
Since it is shown that the line to which the device is connected is a dial tone line, the process moves to step 521 and registers that the DTMF generator 113 will be used for calling the other party from now on.

This call mode registration is performed in a predetermined area within the RAMI 12. When the mode setting is completed, contact 3
．． 4 to the on-footer state (the state shown in Figure 1).

On the other hand, if step S13 is negative, step 5
14 uses the dial pulse generator 114, and 2
Setting the dial pulse generator 114 to use a signal rate of 0 pps Next, in step S15, r177J is dialed, and in step S16 it is determined whether there has been a polarity reversal within 10 seconds.

If there is a polarity reversal within 10 seconds, the process moves to step S22, and thereafter the dial pulse generator 114 is used to generate 20p.
The mode is set to use the ps signal speed selection signal. When the mode setting is completed, the contact 3.4 is returned to the on-hook state.

On the other hand, if step 516 is negative, step 5
17, the dial pulse generator 114 is used, and the dial pulse generator 1 is set so that the signal speed is 10 pps.
14 is set as 0. Next, in step S18, rl17J is dialed, and in step 519, it is checked whether there has been a polarity reversal within 10 seconds.

If there is a polarity reversal, 10p thereafter in step S23.
The mode is set to use the dial pulse generator 114 according to the ps signal speed. When the mode setting is completed, the contacts 3 and 4 are returned to the on-hook state. Step S1
If the polarity reversal cannot be detected within 10 seconds at step 9, the process moves to step S20, and an error display is performed. can be used. This error display shows the current reforming status and
All possible selection schemes are shown to be unsuitable.

When any one of steps 521 to S23 is completed, the other party can be called in a signal format or signal speed suitable for the connected line. Here, redial processing is shown as an example of communication processing that will be performed thereafter.

In step 324, it is first determined whether the redial key 122 has been operated. If the redial key has not been operated, then in step S25 the numeric key 1
21 is pressed. If the numeric keypad has been operated, the process moves to step 528, where a selection signal corresponding to the one-digit telephone number corresponding to the pressed numeric keypad is generated. In this case, either the DTMF generator 113 or the dial pulse generator 114 is used based on the mode determined in steps S21 to S23. In step S29, the transmitted one-digit telephone number data is stored in the RAM.
112, the process returns to step S25. Dial signals are sequentially transmitted by repeating the loop of steps S25 to S29,
The end of the zero communication operation in which communication is performed with the partner station is determined by the detection of the hook switch in step 526. If the contact 5 of the hook switch is in the on-hook state in step 526, storing the telephone number in the redial memory is ended by writing a predetermined end code into the memory in step 530, and the process returns to step S24. If the on-hook state is not confirmed, step S2
Returning to step 4, the call or dialing operation is repeated within the above loop.

On the other hand, if a redial operation is performed in step S24, the process moves to step S27, and all the telephone numbers stored in the redial memory area of the RAM 112 are used.
Call processing is performed and hired.

At this time, either the DTMF generator 113 or the dial pulse generator 114 is used based on the mode set in steps S21 to S23. If dial pulse generator 114 is used, the signal rate determined in steps 522-S23 is used.

According to the above configuration, when a call is made to a specific station using automatically possible selection signal methods one after another, and a response from the other station is confirmed, the selected signal method used at that time is used thereafter. In order to set the calling mode to be used, the operator can set the calling mode of the device to a mode suitable for the line without any troublesome work simply by connecting the device to the line. In particular, in the embodiment described above, since two different signal speeds on the dial pulse line can be distinguished, the calling mode can be determined through completely automatic processing.

Although a telephone set has been described as an example above, similar control is also possible for a facsimile machine or other data communication processing.

[Effects of the Invention] As is clear from the above description, according to the present invention, in a communication device having a plurality of calling means for outputting selection signals of different signal formats or different signal speeds to a communication line and calling a partner station. , calls a predetermined partner station by sequentially using the selection signals of the different signal formats and signal speeds, and when the partner station responds, controls the calling means to use the signal format and signal speed at that time thereafter. configuration, so you can set the calling method suitable for the communication line that is automatically connected.
This has an excellent effect in that the user can install the device without considering the type of communication line and without requiring troublesome adjustment work.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the structure of a telephone device adopting the present invention, Fig. 2 is an explanatory diagram showing the structure of the keyboard shown in Fig. 1, and Fig. 3 is a communication control procedure of the control unit shown in Fig. 1. It is a flowchart figure which showed. 1.2... Bridge diode 6... Ringer circuit 7... Piezoelectric buzzer 8...
Speech network 11...control unit 12...keyboard 13.
...Polarity reversal detection circuit 113...DTMF generator

Claims (1)

[Claims] In a communication device having a plurality of calling means for outputting selection signals of different signal formats or different signal speeds to a communication line to call a partner station, the selection signals of the different signal formats and signal speeds are sequentially used to call a predetermined partner station. 1. A communication device that controls the calling means to use the signal format and signal speed at that time when the other station responds.