CN2143389Y - Automatic exchanger for telephone switch - Google Patents

Abstract

The utility model relates to an automatic exchanger for a main and an auxiliary telephone sets, which is suitable for a main and an auxiliary telephone sets, and is provided with an electronic device having the due performance of a normal exchanger. The utility model solves the problems that when one telephone set dials, one telephone has the problems of number jumping and number mixing, or two telephone sets are switched on at the same time to cause unsuccessful split caused by the off-hook and dialing of the other telephone set existing in a splitter of the original telephone sets for a long time; recall and mutual transfer in an external call can be realized without adding any notifying signal between the main and the auxiliary telephone sets, and the under specially needed situation, the main telephone set can limit the use of an external line of the auxiliary telephone set or the auxiliary telephone set can only receive calls but can not dial numbers. After the utility model is provided with an automatic switchover circuit, a recalling occurrence circuit, a call receiving restraining and acoustic-optic display circuit, and an auxiliary telephone set limiting and controlling circuit, the main and the auxiliary telephone sets can automatically exchange and control through two voice circuit feeder lines, the original advantages are reserved, the existing defects are overcome, and the due functions are improved.

Description

Automatic exchanger for telephone switch

The utility model relates to a kind of chief and vice dynamo-electric words electronic installation along separate routes, does not particularly set up the advise of same signal line, just can repeated call, shift and control the automatic interchanger of high-performance of secondary machine mutually.

Present phone automatic branching device, that is chief and vice machine deconcentrator are a kind of devices that adopts electronic circuit to make automatic transfer switch.When this device is outwards conversed at a machine, can cut off another machine automatically, substitute manual operating a switch, its conversion rapidly need not be manually and to another machine strong security.But this device has such two distinct issues not solve: one, when External Call, because of the ring simultaneously of chief and vice machine, as not being to look for the machine conversation of replying earlier, but when looking for the conversation of another machine, the shortcoming that existing can not repeated call, shift mutually can only rely on manually and call out back and forth.For solving the call problem, only between chief and vice machine, install alertor.Alertor will be tied up at least and establish two transmission lines.In daily use, a machine is called out another confidential callback of back, causes operation complicated, bothers bigger.Especially circuit distance is installed irrationally, influenced by various unfavorable factors, makes speech channel feeder line and the very easily twisting of notification signal line, and aging leakage of electricity, power frequency interference and faults such as misconnection, short circuit take place.Its two, since this device comes out, when existing machine dialing, can cause that a machine is jumped number, the number of scurrying and two machines open simultaneously and cause the technical problem of failure along separate routes because of off-hook, the dialing of another machine always.

The purpose of this utility model is that a kind of desirable chief and vice dynamo-electric words automatic clearing apparatus will be provided, the advantage that not only keeps former splitter, overcome two machines and pluck group technical problem that can make the shunt failure simultaneously, and no longer increase the advise of same signal line, just can be when the outside line incoming call, guarantee the mutual calling transfer of chief and vice machine effectively, busy or when waiting for important telegrams in reply, positive machine has places restrictions on secondary machine use outside line or control the function that secondary machine " can only be answered and can not dial " at positive machine.

The purpose of this utility model is achieved in that utilizes the voltage that changes the whole speech channel feeder line of chief and vice machine to carry out the principle that call signal is transmitted, and gate semiconductor stream electronic component has conducting, the characteristics of keeping and turn-offing, in device, establish two independent parts in positive machine unit and secondary machine unit, positive machine unit is arranged on the positive machine of phone place, the input of positive machine unit directly is electrically connected with the speech channel outside line, there is automatic switch-over circuit (1) inside, repeated call generation circuit (2), call out and receive, restrain and sound and light show circuit (3), and place restrictions on, control secondary machine circuit (4); Secondary machine unit is arranged on phone pair machine place, and the input of secondary machine unit is electrically connected with the end that feeds out of positive machine unit by two feed lines, and circuit (4) is not established in inside, and other and positive machine unit are together.

In device, circuit (1) constitutes by exchanging autocontrol switch loop and direct current autocontrol switch loop, exchange the autocontrol switch loop electric capacity formation of on the circuit form of former splitter, connect, because of series capacitance every straight effect, the ringing current of interchange ± 75V triggers the controllable silicon conducting when only allowing External Call; The controllable silicon in direct current autocontrol switch loop triggers, and except that the series connection voltage-stabiliser tube is arranged, has set up shunt regulator tube, and shunt regulator tube makes the charging voltage in RC loop be subjected to clamper, causes charge constant greater than discharge time constant.Thus, direct current autocontrol switch loop is not subjected to the influence of outside line feed voltage height, fluctuation, especially his the dialing DC pulse of machine there is extremely strong supression ability, even another machine knocks hook switch continuously during machine dialing, even mobile phone left aside, yet can not cause any interference and make failure along separate routes a machine.Owing to adopted the scheme of circuit (1), overcome the phone splitter " can make failure along separate routes because of another machine off-hook " when a machine dials since being born technical problem.

In device, circuit (3) is made of three point voltage discriminators, transistor switch and acousto-optic display part.At the speech channel feeder voltage is 48V or 60V when constant, and three point voltage discriminators are the inactive state no-output, and the oxide-semiconductor control transistors switch is cut off the electricity supply, and makes not sender of acousto-optic display part dead electricity; When arbitrary machine need be when another machine be called out, button by circuit (2) in the arbitrary unit of crawl, its make contact is connected, this circuit can be reduced to whole speech channel feeder voltage the set point of three point voltage discriminators action, discriminator is that operating state has output, oxide-semiconductor control transistors switch connection power supply, its result makes the acousto-optic display part of Unit two get electricity sender and self-locking simultaneously; If just, the arbitrary machine off-hook of secondary machine, whole speech channel feeder voltage will further drop to the operating voltage of phone, and discriminator transfers cut-off state no-output again at once, makes the acousto-optic display part dead electricity of Unit two stop sender simultaneously; If just, after the equal on-hook of secondary machine, whole speech channel feeder voltage gos up to 48V or 60V, and discriminator recovers original inactive state again and keeps no-output, and the acousto-optic display part of Unit two is dead electricity and can sender always.Owing to adopted the scheme of circuit (2), circuit (3), reached the purpose of " do not increase the advise of same signal line, just can just make easily, the transfer of secondary machine customer call ".

In the positive machine unit of device, circuit (4) controls the self-holding switch loop by him and toggle switch constitutes.When toggle switch during in on-state, he controls the self-holding switch loop by short circuit, two unit parallel connections, carry out " along separate routes normal " and just make, secondary machine power equality; When toggle switch during in off-state, he controls self-holding switch loop and secondary machine units in series, because the controllable silicon in the switching circuit is disconnected not conducting of dead electricity because of triggering the loop by the make contact of button, has cut off the feeder voltage of secondary machine unit, has placed restrictions on secondary machine and has outwards called; When the secondary machine of External Call, after replying, positive machine needs when secondary machine shifts, as long as positive machine user presses positive machine unit button, controllable silicon is connected the preparation state that is in because of triggering the loop, meanwhile, because in the positive machine unit link in two groups of contacts of circuit (2) and circuit (4) button, sent recall again, at this moment behind the secondary machine user off-hook, controllable silicon is conducting immediately, even positive machine user discharges the button of positive machine unit, but keep conducting much larger than keeping electric current by the secondary machine operating current of silicon controlled, guaranteed that secondary machine normally answers, answered by the time and finish as long as secondary machine user one on-hook that the electric current that passes through because of controllable silicon descends to being close to zero promptly to accuse and turn-offs.Owing to adopted the scheme of circuit (4), played the effect that secondary machine uses outside line and the secondary machine of control " can only answer and can not dial " of placing restrictions on.

The utility model is because of improvement on former splitter and increased several ball bearing made using, so structure is still very simple, and that function is able to is perfect comprehensively, because the starting point of utility model mainly is placed on " not increasing on the advise of same signal line ", so it is extremely convenient to install and use, the chief and vice machine user of phone there is not specific (special) requirements, in addition owing to recovered the function that positive function has precedence over secondary machine, the line is busy arbitrarily to have reduced secondary machine, improved the utilance of outside line.This device is still located to have enlarged the telephone subscriber to a certain extent under the very nervous situation at current China local telephone communication, has relaxed the contradiction of " difficulty of newly installing a telephone ".

Directly by using the outside line feed voltage to make power supply, electric current is little to very little, so can not have any impact to the telephone BORSHT functions net during owing to static state for the utility model.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the circuit block diagram that the utility model is implemented.

Fig. 2 is the circuit theory diagrams of first embodiment of the utility model.

Fig. 3 is the circuit theory diagrams of second embodiment of the utility model.

1. automatic switch-over circuits among the figure; 2. repeated call generation circuit; 3. call out reception, supression and sound and light show circuit; 4. place restrictions on, control secondary machine circuit.

In Fig. 1, positive machine unit and secondary machine unit are two independent parts, and positive machine unit has circuit (1), circuit (2), circuit (3) and circuit (4) to constitute, the input L of positive machine unit ₁, L ₂Directly be electrically connected with outside line, circuit (4) is not established in secondary machine unit, and other are with positive machine unit, the input L of secondary machine unit ₍₁₎, L ₍₂₎Hold L by two feed lines and feeding out of positive machine unit ₁', L ₂' be electrically connected.In two unit, circuit (1) is by output H ₁, H ₂Or H ₁', H ₂' and just, in parallel with the input of this unit respectively after the secondary phone series connection; After circuit (2) and circuit (3) parallel connection, in parallel again with the input of this unit respectively; Be parallel to the input of positive machine unit after the circuit (4) of positive machine unit and the secondary machine units in series.

In the embodiment shown in Figure 2, the diode D of circuit (1) ₁～D ₄And D ₈～D ₁₁Be connected into the rectification bridge circuit respectively, the positive output end of two rectification bridge circuits respectively with controllable silicon SCR ₁, SCR ₂Anode join controllable silicon SCR ₁, SCR ₂Negative electrode join with the negative output terminal of two rectification bridge circuits respectively, the former constitutes direct current autocontrol switch loop at the back that joins, the latter join back and capacitor C ₂Series connection constitutes interchange autocontrol switch loop.The triggering in direct current autocontrol switch loop is by resistance R ₃, R ₄, capacitor C ₁After the parallel connection, capacitor C ₁The parallel connection point and the controllable silicon SCR of negative pole ₁Negative electrode join capacitor C ₁Anodal parallel connection point and controllable silicon SCR ₁Gate pole join, again with resistance R ₂, series connection voltage-stabiliser tube D ₆, luminous tube D ₅And resistance R ₁Contact resistance R mutually ₁The other end and controllable silicon SCR ₁Anode join shunt regulator tube D ₇With capacitor C ₁The parallel connection point of negative pole and R ₂, D ₆2 parallel connections of series connection point, being different from general is luminous tube D ₅Be set at and trigger in the loop, in order to reduce the dialer impedance of main control loop, in order to reducing the speech channel pressure drop and improving the speech channel quality.Exchange the autocontrol switch loop and remove series capacitance C ₂With former demultiplexer circuit form, repeat no more outward.After two switch loop parallel connections respectively with just, secondary phone connects, again with the input L of two unit ₁, L ₂Or L ₍₁₎, L ₍₂₎In parallel; The diode D of circuit (2) ₁₃～D ₁₆Be connected into the rectification bridge circuit, the positive output end of rectification bridge circuit and voltage-stabiliser tube D ₁₇Negative pole join voltage-stabiliser tube D ₁₇Positive pole and button AN ₁One end of make contact joins, button AN ₁The negative output terminal of the other end of make contact and rectification bridge circuit joins, entire circuit (2) in two unit with input L ₁, L ₂Or L ₍₁₎, L ₍₂₎In parallel; The voltage-stabiliser tube D of circuit (3) ₁₈, D ₁₉, transistor BG ₁(positive-negative-positive) and resistance R ₇, R ₁₀, R ₁₁, capacitor C ₄Constitute three point voltage discriminators, wherein voltage-stabiliser tube D ₁₈Positive pole and resistance R ₇The tie point of one end, with transistor BG ₁Base stage join voltage-stabiliser tube D ₁₉And resistance R ₁₀Series connection back and resistance R ₁₁The tie point of one end, be connected to transistor BG mutually ₁Emitter, voltage-stabiliser tube D ₁₈, D ₁₉Negative pole between and resistance R ₇, R ₁₁The other end between after parallel connection, be respectively the positive and negative feed end of circuit, transistor BG ₂, BG ₃(NPN type) and resistance R ₈, R ₉Capacitor C ₅The transistor formed switch, three point voltage discriminator output BG ₁Collector electrode and transistor switch control end BG ₂Base stage join voltage-stabiliser tube D ₂₀With after the acousto-optic display part is in parallel as switching tube BG ₃Collector load and series connection with it, entire circuit (3) in two unit with the voltage-stabiliser tube D of circuit (2) ₁₇, button AN ₁The series circuit parallel connection; The diode D of circuit (4) ₂₂～D ₂₅Be connected into the rectification bridge circuit, the input of rectification bridge circuit is in parallel with toggle switch K, the positive output end of rectification bridge circuit and controllable silicon SCR ₃Anode joins, controllable silicon SCR ₃The negative output terminal of negative electrode and rectification bridge circuit joins, resistance R ₁₃, R ₁₄, capacitor C ₆With button AN ₂Make contact constitutes controllable silicon and triggers control loop, entire circuit (4) in positive machine unit with input L ₁, feed out the end L ₁' join.

In another embodiment shown in Figure 3, circuit (1), circuit (2) and circuit (3) are respectively by two module I C ₁, IC ₂Constitute circuit (1) module I C ₁Ten leading foots are arranged, and 1 pin is a direct-flow input end, and 3 pin connect capacitor C ₂An end after be ac input end, 4,5 pin external capacitor C ₃, the external luminous tube D of 6,7 pin ₅, the outer and capacitor C of 8,9 pin ₁And resistance R ₃, after direct current and the ac input end parallel connection as a feed end of entire circuit, 10 pin be common port as another feed end of circuit, entire circuit in two unit respectively with just, secondary phone connects, and is parallel to the input L of two unit again ₁, L ₂Or L ₍₁₎, L ₍₂₎The module I C of circuit (2) and circuit (3) ₂Ten leading foots are also arranged, and 1,10 pin are public feed end, 2,3 pin external capacitor C ₄, 4,5 pin external capacitor C ₅, the external acousto-optic of 6,7 pin display part, the external button AN of 8,9 pin ₁Make contact, entire circuit in two unit respectively with input L ₁, L ₂Or L ₍₁₎, L ₍₂₎In parallel.

Claims (3)

1, the automatic interchanger utilization of the chief and vice dynamo-electric words voltage that changes the whole speech channel feeder line of chief and vice machine carries out the principle that call signal is transmitted, and gate semiconductor flows the characteristics that electronic component has conducting, keeps and turn-offs, in device, establish two independent sectors in positive machine unit and secondary machine unit, positive machine unit is arranged on the positive machine of phone place, the input L of positive machine unit ₁, L ₂Directly be electrically connected with the outside line of phone, there is automatic switch-over circuit (1) inside, and repeated call generation circuit (2) is called out reception, supression and sound and light show circuit (3), and placed restrictions on, controls secondary machine circuit (4); Secondary machine unit is arranged on the secondary machine of phone place, the input L of secondary machine unit ₍₁₎, L ₍₂₎Hold L by two feeder lines and feeding out of positive machine unit ₁', L ₂' be electrically connected, circuit (4) is not established in inside, other is characterized in that with positive machine unit: the circuit of two unit (1) and just, secondary phone is in parallel with the input of this unit respectively after connecting; In parallel again with the input of this unit respectively after circuit of two unit (2) and circuit (3) parallel connection; Be parallel to the input of positive machine unit after the circuit (4) of positive machine unit and the secondary machine units in series.

2, according to claim 1. described devices, it is characterized in that:

A. in the circuit (1), diode D ₁～D ₄And D ₈～D ₁₁Be connected into two rectification bridge circuits respectively, the positive and negative output of two rectification bridge circuits respectively with controllable silicon SCR ₁, SCR ₂Anode be connected with cathodic electricity, the former is electrically connected the major loop that the back constitutes the direct current autocontrol switch, the latter is electrically connected back and capacitor C ₂Series connection constitutes the major loop that exchanges the autocontrol switch loop, in the triggering loop in direct current autocontrol switch loop, and resistance R ₃, R ₄And capacitor C ₁Back in parallel, have capacitor C ₁The parallel connection point and the controllable silicon SCR of negative pole ₁Cathodic electricity connect, have capacitor C ₁Anodal parallel connection point and controllable silicon SCR ₁Gate pole be electrically connected after, with resistance R ₂, series connection voltage-stabiliser tube D ₆, luminous tube D ₅, resistance R ₁Series connection, resistance R ₁The other end and controllable silicon SCR ₁Anode be electrically connected shunt regulator tube D ₇Be parallel to capacitor C ₁The parallel connection point and the resistance R of negative pole ₂, voltage-stabiliser tube D ₆2 of series connection points on, connect with phone after parallel connection in two autocontrol switch loops of formation;

B. in the circuit (2), diode D ₁₃～D ₁₆Be connected into the rectification bridge circuit, the positive and negative output of rectification bridge circuit respectively with voltage-stabiliser tube D ₁₇Negative pole and button AN ₁One end of make contact is electrically connected, button AN ₁The other end of make contact and voltage-stabiliser tube D ₁₇Positive electrical connect;

C. in the circuit (3), voltage-stabiliser tube D ₁₈, D ₁₉, transistor BG ₁(positive-negative-positive) and resistance R ₇, R ₁₀, R ₁₁, capacitor C ₄Constitute three point voltage discriminators, voltage-stabiliser tube D in the three point voltage discriminators ₁₈Positive pole and resistance R ₇The tie point of one end, with transistor BG ₁Base stage join voltage-stabiliser tube D ₁₉And resistance R ₁₀Series connection back and resistance R ₁₁The tie point of one end, be connected to transistor BG mutually ₁Emitter, voltage-stabiliser tube D ₁₈, D ₁₉Negative pole between and resistance R ₇, R ₁₁The other end between, after parallel connection, be respectively the positive and negative feed end of circuit, transistor BG ₂(NPN type) and resistance R ₈, R ₉, capacitor C ₅The transistor formed switch, three point voltage discriminator output BG ₁Collector electrode and transistor switch control end BG ₂Base stage be electrically connected voltage-stabiliser tube D ₂₀With after the acousto-optic display part is in parallel as load and switching tube BG ₃The collector electrode series connection;

D. in the circuit (4), diode D ₂₂～D ₂₅Be connected into the rectification bridge circuit, the input of rectification bridge circuit is in parallel with toggle switch K, the positive and negative output and the controllable silicon SCR of rectification bridge circuit ₃Anode be connected resistance R with cathodic electricity ₁₃, R ₁₄, C ₆With button AN ₂Make contact constitutes controllable silicon and triggers control loop.

3, according to claim 1. described devices, it is characterized in that: circuit (1) adopts module (or integrated device) IC ₁Constitute IC with the some discrete components in periphery ₁Mainly contain three leading foots, a leading foot is a direct-flow input end, another leading foot serial connection capacitor C ₂The back is an ac input end, and as a feed end of entire circuit (1), last leading foot is a common port after direct current and the ac input end parallel connection, as another feed end of entire circuit (1); Circuit (2) and circuit (3) adopt same module (or integrated device) IC ₂Constitute IC with the some discrete components in periphery ₂Mainly contain two leading foots, be circuit (2) and the public feed end of circuit (3).

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