JPS592236B2 - button telephone device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key telephone device comprising a main device and a key telephone.

In general, a key telephone device is configured so that a plurality of outside lines are accommodated in each key telephone via a main device, and one of the above-mentioned outside lines is selected and used by a key provided on each button telephone.

If the outside line is of the dial pulse type, each button telephone is provided with a dialing means, and these dialing means directly mechanically connect and connect the outside line accommodated in each of the above-mentioned button telephones. , I'm trying to make a dial call. Therefore, regardless of the number of outside lines that can be accommodated, this type of button telephone device is equipped with dialing means equal to the number of button telephones in total, making the button telephone itself complicated and expensive. As a whole, there was a problem that the structure was extremely complicated and expensive. In other words, although the maximum number of external lines that can be dialed at the same time is the maximum number of external lines, in conventional key telephone devices, each key telephone is provided with a means for dialing, and the number of key telephones is limited to the maximum number of external lines. If the number is greater than the number of dialing means, the number of dialing means is wasted. The present invention eliminates the above-mentioned drawbacks of the conventional technology.The present invention is designed to eliminate the above-mentioned drawbacks of the prior art.The main device is provided with dialing means for connecting and dialing each outside line in the same number as the above-mentioned outside lines, and each button telephone is equipped with the dialing means The structure is such that a means for controlling the operation is provided.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The button telephone device of the present invention will be described below with reference to the drawings of one embodiment.

In the figure, KSU is the main device, and each outside line COLI,
Corresponding to C0L2, the external line circuit section LINEI,
It has LINE2. PR is the outside line circuit section LINEI
It is a signal processing device that makes up the system, and is composed of a microprocessor and the like. M is an external memory such as a RAM, which supplements the insufficient memory in the signal processing device PR. C2 and T7 are a capacitor and a transformer respectively constituting an incoming call detection section, which detect the 16H2 signal supplied here when an incoming call is received on the outside line COLI. COM is a rectifier that rectifies the 16 Hz signal detected by the capacitor C2 and the transformer T1, and its output terminal is connected to the first terminal of the signal processing device PR. Dl is a dial pulse generating relay connected to the collector of a transistor Trl which is turned on and off by a signal appearing at the seventh terminal 7 of the signal processing device PR, and its contact dl is connected in series to one side of the external line COLl. It is connected. Cl and Rl are a capacitor and a resistor connected in series to protect the relay contact, and are connected in parallel to the relay contact Di. Ds is an external line short-circuiting relay connected to the collector of the transistor Tr2, which is turned on and off by the signal appearing at the sixth terminal 6 of the signal processing device PR, and its relay contact is closed when the dial pulse generation relay Di is operated. It operates to short-circuit the outside line by Ds. H is signal processing device P
This is a relay for forming a holding loop connected to the collector of the transistor Tr3, which is controlled on and off by the signal appearing at the 8th terminal of R, and the relay contact h is connected to the external line C.
Connected between two lines of OLl. A is signal processing device P
It is a two-frequency transmitter that receives signals appearing at the 10th to 13th terminals 10 to 13 of R, and is decoded by a decoder N that decodes the signals appearing at the terminals 10 to 13, and the decoder ROM. 2-frequency generator GE that outputs a button-dial-type 2-frequency signal based on the signal
It is constituted by a transformer T2 that sends the output of the 12 frequency generator GE to the outside line COL1. The outside line circuit LINE2 is configured similarly to the outside line circuit section LINE1, although its details are not shown. Okiarai 1, Waterfall 2...
...Taki n is a key telephone, and has an outside line CO.
Ll, COL2, external line control line COCl internal line control line 1NC
Each external line circuit section LINE of the main unit KSU is connected via
l, connected to LINE2. Then, each button telephone set 1, return 2, etc., extension 1NT is added between waterfall n.
are connected to each other through. PRO is a signal processing circuit that constitutes the button telephone set 1, and is constituted by a microprocessor and the like. DA is signal processing circuit P
It is a dial part connected to RO, and 10 from 0 to 9.
Comes with a key. LEDl and LED2 are display elements such as light emitting diodes connected to the signal processing circuit PRO, respectively, and are used to display the outside lines COLl and COL2 in use. SP is a speaker connected to the signal processing circuit PRO via the amplifier circuit AMP, and is connected to the external line CO.
This is for emitting a ringing tone when an incoming call is received at Ll, COL2. S is a circuit selection switch means connected to the signal processing circuit PRO, and TE is a telephone circuit network constituting the button telephone set 1. Further, LKl and LK2 are changeover switches for selecting an outside line, which are operated by an outside line selection key (not shown) provided on the button telephone Okitaki 1, respectively, and one fixed terminal is connected to the outside line COLl, CO, respectively.
L2 and the other fixed terminal are respectively connected directly or via a changeover switch LK2 to circuit selection switch means. LK2 is a changeover switch in which one fixed terminal is connected to the outside line control line COC and the other fixed terminal is connected to the extension line control line 1NC, and the changeover switch LKl for selecting the outside line is connected to the outside line control line 1NC.
, LK2, a changeover switch LKl for selecting an outside line.
, LK2 are connected to the outside line COLl or COL2 side, they are connected to the outside line control line COC side. 1k1 and 1k2 are external line selection switch L.
This is a switch that is controlled on and off in conjunction with Kl and LK2, and is connected between the signal processing circuit PRO and the ground.

HS is a switch connected to the telephone network TE, and is automatically turned on by lifting the handset (not shown). Incidentally, the details of the button telephone set waterfall 2, waterfall 3, . In the above example, now the outside line QOL
Suppose that l receives a call. I received a call on the outside line COLl,
When a 16Hz signal is transmitted here, it is detected by the capacitor C2 and transformer T2 in the main unit KSU, rectified by the rectifier COM, and sent to the signal processing unit P.
It is input to the first terminal 1 of R. First signal processing device PR
When a DC signal rectified by the rectifier COM is applied to terminal 1, this causes the signal processing device PR to output the external line CO.
Detecting that an incoming call has been received on Ll, a coded incoming signal indicating that an incoming call has been received on outside line COLl is transmitted to
Output to the fifth terminal. When the coded incoming signal is output to the fourth and fifth terminals, this is connected to the extension control line 1NC.
Via all the buttons, touch the phone 1, waterfall 2...
...Applied to rot n. That is, the coded incoming signal is applied to the signal processing circuit PRO via the extension control line 1NC1 changeover switch LK2 and the circuit selection switch means S, where it is compared with a preset code. When the coded incoming signal matches the preset code, the signal processing circuit PRO generates a preset call signal, which is sent to the speaker SP via the amplifier circuit AMP.
to be applied. At the same time, the signal processing circuit PRO outputs a signal for lighting the display element LEDl, thereby lighting the display element LEDl. Therefore, in this state, it is possible to notify the user of the button telephone that a call has been received on the outside line COL1. The user of the button telephone learns that an incoming call has been received on the outside line COLl by the ring tone from the speaker SP and the lighting of the display element LEDl, and then calls the outside line COL1.
Operate the outside line selection key corresponding to l to select the changeover switch LK.
When the handset is lifted up, the outside line COL is switched on via the switch LKl, which is turned on by the lifting of the handset.
1 is connected to the telephone circuit network TE constituting the button telephone, and in this state it becomes possible to talk to the other party using the button telephone.

Next, place the button telephone. The case where dialing an outside line from 41i1 will be explained.

Suppose that the available outside line is COLl. Vacant outside line CO
Operate the outside line selection key corresponding to Ll, and switch
When Kl is switched to the left side in the figure, the changeover switch LK2 is also switched to the left side in the figure, and at the same time, the switch 1k1 is also turned on. Therefore, the signal processing circuit PRO uses the ON information of the switch 1k1 to
It is detected that the calling operation has started for OLl, and based on this, coded calling information for selecting an outside line indicating that the calling operation is for outside line COLl is output to the circuit selection switch means S. And at the same time, outside line C
To indicate the start of the call operation to OLl, external line C
A predetermined signal is output to the display element Hll corresponding to OLl, and the display element FLEDl is turned on. The coded transmission information for external line selection applied to the circuit selection switch means S is sent to the second signal processing unit PR of the main unit KSU via the changeover switch LK2 and the external line control line COC.
, are input to the third terminals 2 and 3, and are compared with a preset code here. When the code of the above-mentioned transmission information for selecting an outside line applied to the second and third terminals 2 and 3 of the signal processing device PR via the outside line control line COC matches the preset code, the outside line control unit that matches the code The signal processing device PR of LINE1 becomes operational and ready for dialing. That is, the signal processing device PR transmits the outside line control unit LINEI based on the matching signal of the code.
A predetermined signal is output to the sixth terminal 6 of the signal processing device PR to turn on the transistor Tr2. Therefore, the relay Ds operates, and the external line C is connected by the relay contact Ds.
The two lines of OLl are shorted together. When each key of the dial section DA is operated in this state, the dial information is encoded by the signal processing circuit PRO, and is sent to the The signal is applied to the signal processing device PR.

The signal processing device PR creates a numeric impulse corresponding to the 10PPS or 20PPS number based on this dial information and outputs this to the seventh terminal 7. Therefore, the transistor Trl connected to the seventh terminal 7 will be controlled on and off by the numerical impulse, and the relay D1 will operate in the same manner. Therefore, relay Di is also controlled on and off in the same way, and outside line COL
An impulse corresponding to the above dial information is output to l. In addition, when the outside line COL1 is of the button dial type, when dial information is input from the button telephone, the 2-frequency transmitter A is controlled to the 10th to 13th terminals 10 to 13 of the signal processing device PR. It suffices if it is configured to output a signal.

With this configuration, when coded dial information is input to the second and third terminals 2 and 3 of the signal processing device PR, the two-frequency transmitter A is input to the 10th to 13th terminals 10 to 13. Based on this control signal, the two-frequency generator GE will output a tone signal, which will be transmitted to the outside line COLl via the transformer T2 and relay contact Ds. Become. In this way, when dialing an outside line, you operate the outside line selection key that corresponds to the available outside line, then lift the handset, and use the dial part to transmit dial information to the main equipment, so that the main equipment side It is possible to accurately dial the vacant outside line using dialing means such as a signal processing device, a dial pulse generating relay, and a two-frequency transmitting section provided in the telephone.

In addition, in the above explanation, we have explained the case where an incoming call is received on external line COL1 and the case where dialing is made to external line COL1, respectively. Needless to say, the same operation applies when making a dial call.

As is clear from the embodiments described above, the key telephone device of the present invention includes a signal processing device that operates based on dial information from the key telephone as a main device, and a dial pulse generator that operates based on the output of this signal processing device. Therefore, according to the present invention, there is no need to provide each button telephone with an expensive dialing means, and the overall cost is significantly improved. It has the advantage that it can be constructed at low cost. In particular, according to the present invention, the main device is provided with a plurality of dialing means each corresponding to an outside line, and each of these dialing means is selectively used based on the outside line selection calling information from the key telephone. Based on the dialing information from the key telephone set, the selected dialing means is driven.Therefore, regardless of the number of key telephones, only the number of dialing means is provided as the number of outside lines. is sufficient, and has the advantage that the structure as a whole is significantly simpler and cheaper.

[Brief explanation of the drawing]

The figure is a schematic configuration diagram of an embodiment of the button telephone device of the present invention. KSU...Main device, PR...Signal processing device, Di...Dial pulse generation relay,
A: Dual frequency transmitter, Place: button telephone, PRO: Signal processing circuit, DA:
...Dial section, TE...Telephone circuit network, LKl
, LK2...External line selection switch, 1k1
, 1k2...external line selection switch, S...
...Circuit selection switch, LED1, LED2...
・Display element, COLl, COL2... External line, N
T...Extension line, COC...External line control line,
INC...Internal control line.

Claims (1)

[Claims] 1. A signal processing circuit is installed in the button telephone to encode call information for outside line selection obtained by operating the outside line selection switch and dial information obtained by operating the dial section and transmit the codes to a separately provided main device. , a signal processing device that is selectively used based on the transmission information transmitted to the main device by the signal processing circuit, and a signal processing device that is obtained by inputting the dial information to the signal processing device that is selectively used. A plurality of dial transmitting means such as dial pulse generating relays and dual-frequency transmitting units operated by the output of the signal processing device are provided corresponding to the outside lines housed in the main device, respectively, and the dial transmitting means is provided in correspondence with the outside line housed in the main device. A button telephone device configured to selectively use a signal processing device and drive the dialing means operated by the output of the selected signal processing device based on the dialing information.