JPH01125045A - Telephone set - Google Patents

Abstract

PURPOSE:To improve a connection rate by sending out a dial signal stored in a telephone set, in case when on-hook has been executed before it is ended completely to send out the dial signal to a line after a dial operation. CONSTITUTION:When on-hook is detected by an on-hook detecting part 12 before a dial signal is sent out completely, its detected dial signal is stored temporarily in a dial signal store part 11. Simultaneously, a hook state switching part 10 and a DC circuit forming part 3 are controlled by a detecting part so that a line L is not opened in a state that a DC circuit also remains formed in a state of on-hook, and the dial signal stored in the dial signal store part 11 is sent out successively to the line L from a dial signal sending-out part 9 through the DC circuit forming part 3, a rectifying part 5 and the hook-state switching part 10. In such a way, even if on-hook is executed while the dial signal is being sent out, the dial signal generated by a dial operation is all sent out completely to the line. In this regard, even if misdialing is executed, it is prevented to send out its dial signal.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a telephone, and particularly to a telephone that is effective when connected to a PBX line.

(Prior Art) With the recent development of electronic technology, telephone circuits have also been made into solid-state electronics and assembled using a large number of integrated circuits (ICs).

Figure 2 shows the configuration of a telephone set using such an IC, where T is the telephone and L is the PBX line (hereinafter referred to as
(simply referred to as a line).

In the telephone T, reference numeral 1 denotes a hook switch. When the handset H is on-hook, a ringing signal coming from the line is applied to the incoming call signal generator 2, and the ringing generated by the activation alerts the listener to the handset H. The hook switch 1 is placed in an off-hook state by being picked up, whereby a DC circuit is formed by the DC circuit forming section 3, and a call can be made from the handset H to the calling telephone through the line through the calling circuit section 4. become.

When making a call using this telephone, the handset H is lifted and hooked up, the DC circuit formation section 3 forms a DC circuit, and the line is captured via the rectification section 5. At the same time, the power source unit 6 converts the station power supplied via the line to the power source for the control unit 7 and supplies it thereto.

Press or point to a dial key (not shown) (hereinafter,
When the dial is pressed (explained as pressing), the dial signal detection unit 8 detects it, the control unit 7 which constantly monitors the detection output detects it, the dial signal sending unit 9 is controlled, and the DC circuit forming unit 3゜A dial signal is sent to the line via the rectifier 5, and depending on the other party's response, the handset H
Telephone communication is possible through the rectifying section 5, the direct current circuit forming section 3, and the telephone communication circuit section 4.

The line on such a telephone can be put on hold by, for example, pressing the dial button "1". In addition, the rectifying unit 5 protects the IC used in the control unit 7 or the communication circuit unit 4 from being destroyed if the power supply polarity of one line is reversed regardless of whether a call is received or made. It is configured.

(Problem to be Solved by the Invention) However, in the above-mentioned conventional telephone, when it is connected to a dial pulse (DP) line, the generation of dial pulses is usually 10 pulses/see or 20 pulses/see.
Since the pulse/see is slow, it takes time to send the dial signal, so if you go on-hook immediately after pressing the dial key, the dial signal has not been completely sent out yet, so the line is released, and the dialed A situation may occur in which the dial signal is not sent even though it is supposed to.

Normally, this is not a problem in normal calls, but when transferring a line, it becomes a drawback that if you operate a special dial key and immediately go on-hook, you cannot transfer the call.

It should be noted that the above-mentioned problem does not occur in a pushbutton (PB) dial telephone, and therefore, it can be solved by using a PB dial telephone, but there is a disadvantage that the dial frequency generating component increases the cost.

The present invention aims to solve the problems of conventional dial pulse telephones as described above.

(Means for Solving the Problems) The present invention achieves the above-mentioned purpose in a telephone set by providing an on-hook detection section, a dial signal storage section, and a hook state switching section for switching the on/off state of a hook switch. The configuration is such that the dial signal generated by the above operation is stored in the dial signal storage section, and even if the dial operation ends and the dial signal is off-hook before sending the dial signal to the line is completed, the dial signal generated by the above operation is sent from the dial signal storage section to the line. and achieve it.

(Function) With the above-mentioned configuration, even if you go on-hook after a dial operation and before the dial signal has not yet been completely sent to the line, the dial signal stored in the telephone will be sent, increasing the connection rate. Furthermore, even if a wrong dial is made, it can be canceled by hooking twice, for example, and is especially effective when used with PBX lines.

(Example) The present invention will be explained below by way of an example using one drawing.

FIG. 1 is a block diagram showing an embodiment of the present invention, in which 10 is a hook state switching unit that switches the hook switch between on and off states, 11 is a dial signal storage unit, 12 is an on-hook detection unit, and other symbols are shown. 2 have the same or equivalent functions as the reference numerals in FIG. 2, and their explanation will be omitted.

In such a configuration, the operation is such that when the hook state switching unit 10 is in the on-hook state and a calling signal is received from the line, the incoming call is notified by activation of the incoming call signal generating unit 2.
As a result, the handset H is picked up, the hook state switching unit 10 is turned on, the DC circuit forming unit 3 forms a DC circuit, and a call can be made via the communication circuit unit 4.

To make a call, the handset H is picked up and the hook state switching unit 10 is turned off-hook, whereby the DC circuit forming unit 3 forms a DC circuit and captures the line. At the same time, the power supply unit 6 converts the power from the line into a power that can be used by the control unit 7 and supplies it to the control unit 7 . When you dial the other party in this state, the dial signal detection unit 8 detects it, and the control unit 7 that monitors it detects the dialing and stores the dial signal in the dial signal storage unit 11. Ru.

At the same time, the control unit 7 monitors the on-hook detection unit 12, and if the off-hook state continues, the dial signal detected by the dial signal detection unit 8 is transferred to the dial signal storage unit 11.
from the dial signal sending unit 9 to the DC circuit forming unit 3. The dial signal is sent out to the line via the rectifying section 5 and the hook state switching section 10.

At this time, before the dial signal is completely sent out,
When on-hook is detected by the on-hook detection unit 12, the detected dial signal is temporarily stored in the dial signal storage unit 11, and at the same time, the detected dial signal is stored in the dial signal storage unit 11.
0. The control unit 7 controls the DC circuit forming unit 3 in an off-hook state so as not to open the line while forming the DC circuit, and the dial signals stored in the dial signal storage unit 11 are sequentially sent from the dial signal sending unit 9. DC circuit forming section 3. The signal is sent to the line via the rectifying section 5 and the hook state switching section 10.

When the transmission is completed, the control section 7 controls the hook state switching section 10 and the DC circuit forming section 3 to put them in the on-hook state, open the DC circuit, and put them in the normal off-hook state.

Please note that incorrect dialing may occur due to operational errors. In that case, to prevent sending out dialing signals.

For example, if a hooking operation is performed twice in succession, the hooking is detected by the on-hook detection section 12, and the detection information is detected by the control section 7, the dial signal accumulated in the dial signal accumulation section 11 due to the above-mentioned erroneous operation is cleared. Then, the hook state switching unit 10 and the DC circuit forming unit 3 are controlled to be in the on-hook state, and the formation of the DC circuit is released.

As described above, in the present invention, even if you go on-hook while a dial signal is being sent out, all the dial signals generated by the dial operation are completely sent out to the line, and even if you make an incorrect dial, the dial signal is prevented from being sent.

(Effects of the Invention) As is clear from the above explanation, the present invention provides that even if the hook switch is turned off before the dialing signal is sent to the line, or in other words, even if the handset is returned to the telephone, the dialing signal is not completely transmitted. Since the dialing signal is sent to the line, the generation of the dialing signal is slow. Therefore, if it is used with a dial pulse type telephone, where the sending of the dialing signal to the line is delayed after the end of the dialing operation, you can hang up the handset immediately after dialing and go off-hook. , a dial pulse is sent out, and is extremely effective when used, for example, in the case of call transfer, where the handset is often put down immediately after dialing.Moreover, it has the advantage of being able to enjoy the same functions at a lower cost than a button-type telephone. There is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a circuit according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional telephone. T...Telephone, 1...Hook switch, 2...
- Incoming signal generation section, 3... DC circuit formation section, 4...
・Telephone circuit section, 5... Rectifier section, 6... Power supply section,
7... Control unit, 8... Dial signal detection unit,
9...Dial signal sending unit, 10...Hook state switching unit, 11...Dial signal storage unit, 12...
・On-hook detection section. “°□−□“□−−−1

Claims (1)

[Claims] The telephone is provided with an on-hook detection section, a dial signal storage section, and a hook state switching section that switches the hook switch between on and off states, and the dial signal is stored in the dial signal storage section, and when the dial operation is completed, the line of the dial signal is switched. 2. A telephone set, characterized in that, even if the telephone goes off-hook before the transmission to the telephone is completed, the dial signal generated by the above operation is transmitted from the dial signal storage section to the telephone line.