CN2155111Y - Multifunction telephone - Google Patents

Abstract

The utility model discloses a multifunction telephone, which is composed of a timing type music held added on the basis of an ordinary pulses/ audio key telephone set-an automatically releasing circuit, a logic control circuit, an auxiliary machine ringing current generator circuit, a power supply circuit and auxiliary machine isolation, and an interface circuit. The device is characterized in that the outside takes one telephone line of a telephone terminal, but is provided with a plurality of common telephone sets as auxiliary telephones, can do double calling and sequential ringing to the auxiliary telephones, and can provide DC potential compensation and a storage memory current of auxiliary telephones talking; city telephone line burden does not be added and also the communication quality can be ensured; the utility model relates to a convenient, economic and reliable multifunctional telephone which can effectively raise utilization rate of a telephone and communication rate.

Description

Multifunction telephone

A kind of multi-feature telephone particularly only occupies a phone number line, can increase the multi-feature telephone of adorning several secondary machines.

In order to increase telephone set quantity in the part, the convenient use improved utilization rate and call completing rate, and known method has: a number line also connects several telephone sets; Use occupies the clique's telephone system or the Private Branch Exchange PBX of several numbers lines.The former can increase the burden of local line, influences communication quality, and the latter is the number of being suitable for line affluence then, the frequent place of conversing, but must use trunk line.

The purpose of this utility model will be developed a kind of exactly and occupy a subscriber's telephone line, can connect the secondary machine of many phones by band, simultaneously can not increase the subscribers feeder burden again, but guarantee speech quality and have that nobody can shift the secondary machine multi-feature telephone of jingle bell successively automatically to secondary machine recall and when main frame.

The purpose of this utility model reaches like this: increase the timing music and keep one to discharge circuit automatically on the basis of the pulse/audio frequency push-button phone machine circuit of a conventional, well-known, logic control circuit, secondary machine ringing current generator circuit, power circuit, the interface circuit that buffer circuit is connected with major and minor machine; Pulse/audio frequency push-button phone machine circuit and timing music direct and that pulse/audio frequency push-button phone machine circuit is electrically connected keep an automatic circuit that discharges to be electrically connected with logic control circuit respectively, and by logic control circuit and secondary machine ringing current generator circuit, power circuit is realized being electrically connected; Pulse/audio frequency push-button phone machine circuit is directly isolated with secondary machine, interface circuit is electrically connected and by secondary machine isolation, interface circuit and be with pair electromechanics to be connected; Secondary machine is isolated, interface circuit respectively with pulse/audio frequency push-button phone machine circuit, secondary machine ringing current generator circuit, logic control circuit, power circuit is electrically connected.

When outside line incoming call signal, the logic control circuit input that is connected with main phone circuit is obtained sampled signal, surpasses after 4 times in the outside line ring, and logic control circuit is supplied with secondary machine ringing current generator circuit with power supply, makes it to produce ringing signal; And by the secondary machine preselection switch in the logic control circuit, make and the corresponding circuit working of previously selected secondary machine, the secondary machine of ringing signal being sent to appointment makes it jingle bell; If still nobody carries machine, behind the jingle bell three times, ringing signal is sent to all the other secondary machines again, the whole jingle bells of all the other secondary machines, and it is preferential to reach secondary machine preliminary election, successively the purpose of jingle bell.

When outside line incoming call signal, multi-feature telephone of the present utility model (main frame) is proposed the machine conversation, if outside line requires and a certain secondary machine conversation, can press the maintenance key of main frame, make the timing music keep one to discharge circuit working automatically, the other side's audible sound pleasure waits, and in the secondary machine options button is pressed in the on-hook of main frame microphone, the sampled logic control circuit of delivering to of the state of holding circuit, control produces ringing signal and sends to and specify secondary machine, makes it jingle bell, finishes the recall of main frame to secondary machine.

After secondary machine jingle bell was carried machine, secondary machine interface circuit was carried the machine signal with secondary machine and is delivered to logic control circuit, makes secondary machine ringing current generator and secondary machine control circuit dump, and relay resets, and secondary machine is connected by secret buffer circuit and main phone circuit, converses.Power circuit carries out the DC potential compensation to secondary machine conversation, and provides the storage memory required electric current to all phones.

Below in conjunction with an embodiment of the present utility model, multi-feature telephone of the present utility model is further described in detail.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is the circuit principle structure figure of an embodiment of the utility model, and wherein square frame 1 is pulse/audio frequency push-button telephone; Square frame 2-1,2-2 are that secondary machine is isolated, interface circuit; Square frame 3 is secondary machine; Square frame 4 is the outside line bell signal.

Fig. 3 is the external wiring diagram of Fig. 2.

With reference to Fig. 1, Fig. 2, multi-feature telephone of the present utility model is to increase the timing music to keep one to discharge circuit automatically on the basis of a pulse/audio frequency push-button telephone, logic control circuit, secondary machine ringing current generator circuit, secondary machine isolation and interface circuit, power circuit constitute.

Wherein the timing music keeps one to discharge circuit automatically by including triode Q ₂, Q ₃, Q ₄The monostable circuit and the music-integrating block U that form ₄(NE66) constitute, and at triode Q ₄Collector electrode and resistance R ₁₆Between series capacitance C ₁₃, as regularly discharging electric capacity.

When outside line incoming call signal, multi-feature telephone of the present utility model (main frame) is proposed the machine conversation, if outside line requires and a certain secondary machine conversation, presses the maintenance key on the utility model multi-feature telephone (main frame), and this moment, A point high level passed through resistance R ₂₀Incoming timing formula music keeps one to discharge circuit automatically, makes triode Q ₂Conducting, the electric current resistance R of flowing through ₁₁, triode Q ₃Base stage makes triode Q ₃After the conducting, triode Q ₄Also conducting, Q ₄The high level of collector electrode passes through capacitor C ₁₃And resistance R ₁₆To Q ₂Base stage provides the electric current of keeping conducting, makes by Q ₂, Q ₃, Q ₄The holding circuit of forming enters hold mode.At this moment, the microphone handle on-hook of multi-feature telephone (main frame), and complete machine still keeps carrying the machine state.Q ₃The high level of collector electrode passes through resistance R ₁₃, R ₁₄Light-emitting diode (maintenance indicator light) D is provided ₁₄Operating current, make it luminous and make music-integrating block U ₄(NE66) capacitor C is passed through in work ₁₂, resistance R ₁₇, triode Q ₃Musical sound is delivered to outside line via main phone circuit.Voltage stabilizing didoe D ₁₃The high level of negative pole passes through resistance R ₁₀Output to an input logic integrated package U of logic control circuit ₆(4011) 12 pin make secondary machine ringing current generator circuit working by logic control circuit, produce secondary machine ringing signal.If main frame has three secondary machines, press the secondary machine selector switch key T in the logic control circuit again ₁, T ₂, T ₃In that button corresponding (T for example with a certain secondary machine ₁), then make relay J ₁, J ₂, J ₃In a corresponding adhesive (J for example ₁), ringing signal is sent to specified secondary machine (for example No. 1 secondary machine), makes it jingle bell.Thereby finished the utility model multi-feature telephone to keep task with the recall and the music of secondary machine.

Carry machine when arbitrary secondary machine, main phone speech channel voltage is descended, because triode Q ₄Base stage is connected to capacitor C ₁₄, its voltage can not suddenly change, and emitter voltage decline makes triode Q ₄End, collector voltage is zero, capacitor C ₁₃Negative pole becomes negative potential, no longer to triode Q ₂Base stage provides electric current, makes triode Q ₂, Q ₃End, holding circuit discharges automatically.

If the no one carries machine, the capacitor C in the holding circuit in a period of time ₁₃Pass through resistance R ₁₆C is worked as in charging ₁₃Triode Q when negative pole reaches zero level ₂End triode Q ₃Also end, timing music holding circuit discharges automatically, makes multi-feature telephone of the present utility model have the music maintenance, regularly the function that discharges.

Logic control circuit of the present utility model is by photoelectric coupling circuit integrated package U ₃(4W26) as an one input, four or two NAND gate integrated package U ₆(4011) be the logic control main body, in conjunction with secondary machine preselection switch SW ₂, triode Q ₁₇And Q ₁₈The bistable circuit and the triode Q that form ₁₅₁And Q ₁₆₁, Q ₁₅₂And Q ₁₆₂, Q ₁₅₃And Q ₁₆₃The bistable circuit of forming is controlled secondary machine ringing current generator circuit working, and ringing signal is delivered to secondary machine makes it jingle bell.

When outside line input bell signal, ringing current is by photoelectric coupling circuit integrated package U ₃(4W26) input 1 pin and 2 pin make between 4 pin of output and 5 pin by by becoming conducting, and its 4 pin is also corresponding to become high level by low level, by coupling capacitor C ₆, diode D ₁₀, D ₁₁, resistance R ₇, R ₈To capacitor C ₇And C ₈Carry out integration charging, through 4～5 bell signals to capacitor C ₇And C ₈Charging, integrated package U ₆(4011) 5 pin and 6 pin all become high level, 3 pin output high level, and the output high level of 3 pin is by current-limiting resistance R ₆₈Make by triode Q ₁₇, Q ₁₈The bistable circuit conducting of forming, power supply is through Q ₁₈Supply with secondary machine ringing current generator circuit and secondary machine control relay J ₁, J ₂, J ₃, while integrated package U ₆4 pin change low level into by high level, if No. 1 secondary machine is the preferential secondary machine of preliminary election, the low level of 4 pin output is by diode D ₃₇With secondary machine preselection switch SW ₂Make the bistable circuit Q of control relay ₁₅₁, Q ₁₆₁Conducting, relay J ₁The secondary power ringing signal that secondary machine ringing current generator produces after the adhesive is by transformer TR ₁Boost, through relay J ₁Deliver to No. 1 secondary machine of preliminary election, make it jingle bell.Nobody carries under the situation of machine integrated package U at No. 1 secondary machine ₆The high level of 3 pin pass through resistance R ₆₇, capacitor C ₄₅Integration makes integrated package U after 15 seconds ₆9 pin become high level, 10 pin output low levels make all the other secondary machine relay adhesives, all secondary machines are jingle bell all.Thereby it is preferential to have finished the preliminary election of the utility model multi-feature telephone, calls out the task of (jingle bell) successively.

When keeping an automatic circuit that discharges, the timing music passes through resistance R ₁₀An input logic integrated package U to logic control circuit ₆When 12 pin input high levels (4011) are the control signal of recall, U ₆Output 3 pin be high level, triode Q ₁₇, Q ₁₈The bistable circuit conducting of forming, power supply is through triode Q ₁₈Supply with secondary machine ringing current generator circuit and secondary machine control relay J ₁, J ₂, J ₃, control secondary machine ringing-current circuit working, produce secondary machine ringing signal, if call out No. 1 secondary machine, then secondary machine options button T this moment ₁Be pressed triode Q ₁₅₁, Q ₁₆₁The bistable circuit conducting of forming, secondary machine control relay J ₁Secondary machine is delivered in adhesive, ringing signal No. 1, No. 1 secondary machine jingle bell.

Carry machine when the secondary machine of jingle bell, provide a DC channel to make C point current potential descend capacitor C ₄₆Negative pole produces negative voltage, passes through resistance R simultaneously ₆₆With diode D ₃₅Signal is delivered to the logic integrated package U of logic control circuit ₆13 pin and 8 pin, make logic integrated package U ₆Output 3 pin reduce to low level, control secondary machine ringing current generator circuit and make it to quit work, the relay of adhesive is discharged, secondary machine enters talking state.

Secondary machine ringing current generator circuit is by dual time base circuit integrated package U ₅(NE556), step-up transformer TR ₁And resistance R ₆₁～R ₆₅, capacitor C ₄₀～C ₄₄, diode D ₃₃Constitute.A time-base circuit is 1:4 as duty ratio, and the cycle is 6 seconds a oscillator, and another time-base circuit is as the 1KHZ square-wave oscillator, because reset terminal 10 pin of second time-base circuit are connected on output 5 pin of first time-base circuit, so from integrated package U ₅7 pin produce the 1KHZ square wave output at intermittence that duty ratio is 1:4.Because integrated package U ₅(NE556) output current can reach 200mA,, power output can reach about 1W, and ringing telephone stations sensitivity is again less than 0.1VA, so secondary machine ringing current generator circuit of the present utility model can drive several the normal jingle bells of telephone set, be a cheapness, secondary machine ringing signal generator efficiently.

With reference to accompanying drawing 3, multi-feature telephone of the present utility model, owing to be on the basis of a common pulse/audio frequency Campatible telephone set, to increase the timing music to keep one to discharge circuit automatically, logic control circuit, secondary machine ringing current generator circuit and power circuit also pass through secondary machine buffer circuit and master, the interface circuit that secondary machine is connected is connected as the ordinary telephone set of secondary machine with several (for example 3), so only occupy a subscriber's telephone line, can carry out timing music to the secondary machine of be with again keeps, recall, jingle bell successively, have simultaneously between each telephone set and isolate mutually, the function that the machine of carrying is taken the lead, power circuit carries out the DC potential compensation and provides the storage memory required electric current to all telephone sets secondary machine conversation, so can not can increase the burden of local line, guarantee speech quality, be a kind of convenient use, can effectively improve phone utilization rate and call completing rate, the multi-feature telephone of economic and reliable.

Claims (4)

1, a kind of multi-feature telephone, comprise pulse/audio frequency push-button phone circuit, power circuit, secondary machine is isolated, interface circuit, it is characterized in that: the timing music that pulse/audio frequency push-button phone circuit reaches with pulse/audio frequency push-button phone circuit is electrically connected keep-discharges circuit automatically and is electrically connected with logic control circuit respectively, and realizes being electrically connected with secondary machine ringing current generator circuit, power circuit by logic control circuit.

2, multi-feature telephone according to claim 1 is characterized in that: logic control circuit is by photoelectrical coupler integrated package U ₃(4N26), be connected the sampling of outside line bell signal with pulse/audio frequency push-button phone as an input of logic control circuit, and by integrating circuit C ₇, C ₈, Q ₁With logical circuit integrated package U ₆(4011) be electrically connected; Through resistance R ₁₀Keep an automatic circuit that discharges to be electrically connected with the timing music to the hold mode sampling, with an input (the logical circuit integrated package U of logic control circuit ₆An input) connect; Through capacitor C ₄₆Step-up transformer TR by secondary machine ringing current generator circuit ₁Be connected with secondary machine interface circuit, secondary machine proposed the machine sample of signal, with C ₄₆Logic control circuit input just very, by its negative pole through resistance R ₆₆With diode D ₃₅Respectively with logical circuit integrated package U ₆Connect; Logical circuit integrated package U ₆Through resistance R ₆₈With bistable circuit Q ₁₇, Q ₁₈And through secondary machine preselection switch SW ₂Bistable circuit Q with power circuit, secondary machine ringing current generator, the secondary power ringing signal of control _15n, Q _16nBe electrically connected.

3, according to claim 1 and 2 described multi-feature telephones, it is characterized in that: the timing music keeps one to discharge circuit automatically by music-integrating block U ₄(NE66), monostable circuit Q ₂, Q ₃, Q ₄Form electrochemical capacitor C ₁₃With triode Q ₄And resistance R ₁₆Series connection, its positive pole and Q ₄Collector electrode connect negative pole and R ₁₆Connect, as regularly discharging electric capacity.

4, according to claim 1 and 2 described multi-feature telephones, it is characterized in that: dual time base integrated package U ₅(NE556) and transformer TR ₁Constitute the secondary machine ringing signal of batch (-type) generator.

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