CN2187359Y

CN2187359Y - Full-automatic dialing device

Info

Publication number: CN2187359Y
Application number: CN 94207074
Authority: CN
Inventors: 张军
Original assignee: INST NO 54 MINISTRY OF ELECTRONIC INDUSTRY
Current assignee: INST NO 54 MINISTRY OF ELECTRONIC INDUSTRY
Priority date: 1994-03-24
Filing date: 1994-03-24
Publication date: 1995-01-11
Anticipated expiration: 2004-03-24

Abstract

The utility model discloses a bidirectional full-automatic dialing device, which is composed of a logic switch, a loop signal generating circuit, a loop current testing circuit, a called control circuit, a loop-to-line M signal converting circuit, a mutual control logic circuit, a line E state testing circuit, etc. The utility model can be used for signaling changes when the terminal apparatus in line E and line M signaling mode is connected with an exchanger for users. The utility model can realize bidirectional dialing in full automaticity without changing the existing communication equipment. The utility model has the advantages of convenient operation, simple circuit, and low cost. The utility model is an ideal novel bidirectional full-automatic dialing device.

Description

Full-automatic dialing device

The utility model relates to the two-way fully automatic selection device in wired and the radio communication, is specially adapted in the long haul communication, realizes dialing automatically between two exchanger users.

Existing communication equipment, the user enters various communication networks by subscriber exchange to realize communication objectively, especially carries out long haul communication, because the signaling method difference of various communication networks, need various corresponding signaling conversion, this just brings difficulty to automatic connection.Therefore in common communication process (particularly when private network is connected with public network), calling subscriber's call signal generally is by just arriving final called subscriber (being that the common exchange that passes through carries out manual closing operation) after human relay working or the semi-automatic switching, and this brings many inconvenience to telex network.At present the switching equipment that uses does not generally possess the two-stage dialing function, and it is very expensive to carry out improvement expenses to existing equipment, unsuitable penetration and promotion.

The purpose of this utility model be to avoid weak point in the background technology and provide a kind of need not transform existing communication equipment just can realize two-wayly automatically continuing, without the two-way fully automatic selection device of human relay working, and the utility model also to have a circuit simple, make characteristics such as easy to maintenance, with low cost.

The purpose of this utility model is to finish in the following manner: it is made up of to M line signaling conversion circuit 5, cross complaint logical circuit 6, E line states testing circuit 7, DC power supply 8 logic switch 1, loop signals generation circuit 2, loop current testing circuit 3, called control circuit 4, loop.Wherein the discrepancy end A of switch out-trunk comes in and goes out with logic switch 1 and holds 1 to be connected, convertor user line is come in and gone out and is held B and logic switch 1 discrepancy end 2 to be connected, logic switch 1 goes out to hold end 5 to be connected with speech channel terminating set C end, go out end 3 serial connection loop current testing circuits 3 and go into end 1, be connected in series loop after going out to hold 2 again and go into end 1 to M line signaling conversion circuit 5, going out end 2 backs is connected with direct current signaling M line D end, loop current testing circuit 3 goes out end 3 and goes into to hold 1 to be connected with cross complaint logical circuit 6, cross complaint logical circuit 6 goes out end 2 and goes into to hold 3 to be connected with loop to M line signaling conversion circuit 5, E line states testing circuit 7 end 2 and cross complaint logical circuit 6 end 3 of coming in and going out of coming in and going out is connected, and E line states testing circuit 7 goes out goes into to hold 4 to be connected with logic switch 1 after end 1 one tunnel is connected in series called control circuit 4, go out and go into to hold 6 to be connected with logic switch 1 after end 1 another road serial connection loop signals produces circuit 2, going into end 3 is connected with the P end of direct current signaling E line.The negative V1 end of DC power supply 8 outputs is connected, exports negative V2 end with cross complaint logical circuit 6 power ends and is connected with called control circuit 4 power ends.

The purpose of this utility model can also reach by following measure:

Logic switch 1 is made up of the 2 contact 2-1 of the relay K in the called control circuit 4, K2-2, wherein the discrepancy end A of switch out-trunk goes into end 1 with relay K 2 contact K2-1, K2-2 one moving contact 1, loop current testing circuit 3 respectively and connects, come in and go out end B and loop signals of convertor user line produces circuit 2 and goes out end respectively with relay K 2 contact K2-1, another moving contact 2 of K2-2 and connect, and voice channel terminal terminating set C end is connected with the fixed juncture 3 of relay K 2 contact K2-1, K2-2.

Called control circuit 4 is made up of E line states testing circuit 7 repeat circuit contact K1, transistor G1, diode G2, relay K 2, wherein relay contact K1 fixed juncture 3 and DC power supply 8 negative V2 ends are connected, a moving contact 2 holds with ground and be connected, be connected with transistor G1 base stage behind another moving contact 1 series resistor R1, capacitor C 1 one ends are with transistor G1 base stage and connect, other end earth terminal, transistor G1 collector electrode are connected with DC power supply 8 negative V2 ends, is connected with the ground end behind emitter one tunnel serial connection relay K 2 coils, and another road is connected in series behind the diode G2 its negative pole and holds with ground and be connected.

Cross complaint logical circuit 6 is by operational amplifier G3, diode G4, G5, G6 forms, wherein loop detection circuit 3 goes out end 3, it is anodal and connect with diode G4 that loop is gone into end 3 to M signaling conversion circuit 5, diode G4 negative pole and operational amplifier G3 go into end 1 resistance R 2, R3 one end also connects, its negative pole goes out to hold with E line states testing circuit 7 and is connected behind resistance R 2 other ends serial connections diode G5, operational amplifier G3 goes into end 2 and resistance R 4, R5 one end also connects, go out the end 3 and resistance R 4 other ends, diode G6 negative pole also connects, diode G6 positive pole is gone into end with E line states testing circuit 7 and is connected resistance R 3, the R5 other end is connected with DC power supply 8 negative V1 power ends respectively.

The utility model is compared with background technology has following advantage:

1, the utility model does not need existing communication equipment is made any change, and just can realize two fully automatic selections between the subscriber exchange user.Save the scrap build expense greatly, have practical reference value.

2, the utility model circuit is simple, is made into independent dongle configuration and inserts existing subscriber terminal equipment and just can finish the purpose of this utility model, therefore manipulates easyly, and maintenance is easy, is convenient to penetration and promotion.

3, the utility model dependable performance, the signaling conversion when being used to have the terminal equipment of E line and M line signaling method and subscriber exchange interface.Without manual closing operation, realize fully automatic selection, and the utility model is with low cost, be desirable novel two-way fully automatic selection device in the communication at present.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a principle calcspar of the present utility model.

Fig. 2 is the electrical schematic diagram of the utility model logic switch 1.

Fig. 3 is the electrical schematic diagram of the called control circuit 4 of the utility model.

Fig. 4 is the electrical schematic diagram of the utility model cross complaint logical circuit 6.

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model is made up of to M line signaling conversion circuit 5, cross complaint logical circuit 6, E line states testing circuit 7, DC power supply 8 logic switch 1, loop signals generation circuit 2, loop current testing circuit 3, called control circuit 4, loop.Wherein logic switch 1 is made of the 2 contact K2-1 of the relay K in the called control circuit 4, K2-2, and logic switch 1 is held and produced circuit 2 to loop current testing circuit 3, loop signals to switch out-trunk A end, to exchanger user line B end, to voice channel terminal terminating set C all has a pair of transmission line to constitute the transmitted in both directions signal.Wherein the discrepancy end A of switch out-trunk goes into end 1 with relay K 2 contact K2-1, K2-2 one moving contact 1, loop current testing circuit 3 respectively and connects.Come in and go out end B and loop signals of convertor user line produces circuit 2 and goes out end respectively with relay K 2 contact K2-1, another moving contact 2 of K2-2 and connect, and voice channel terminal terminating set C end is connected with the fixed juncture 3 of relay K 2 contact K2-1, K2-2.The effect of logic switch 1 is by two pairs of contacts of relay K 2 switch out-trunk and subscribers feeder to be selected, to determine called path or caller path.

Embodiment relay K 2 adopts commercially available JRC-9M type relay to make and forms.It is to provide loop signals for the called subscriber that loop signals produces circuit 2 its effects.3 its effects of loop current testing circuit are the loop signals that detect on the caller path (switch out-trunk).

Related circuit schematic diagram in the SCPC satellite communication earth station cable voice port equipment that embodiment loop signals generation circuit 2, the Canadian SPAR of loop current testing circuit 3 employings company introduce is made.

The called control circuit 4 of the utility model is made up of E line states testing circuit 7 relaying contact K1, transistor G1, diode G2, relay K 2.Its effect is to remove control logic switch 1, connect called path according to E line signal.Wherein relay contact K1 fixed juncture 3 and DC power supply 8 negative V2 ends are connected, a moving contact 2 holds with ground and be connected, be connected with transistor G1 base stage behind another moving contact 1 series resistor R1, capacitor C 1 one ends and transistor G1 base stage and connect, other end earth terminal, transistor G1 collector electrode is connected with DC power supply 8 negative V2 ends, emitter one tunnel is connected with the ground end after being connected in series relay K 2 coils, and its negative pole is connected with the ground end behind the serial connection diode G2 of another road.

Embodiment relay K 1 adopts commercially available JRC-9M type relay to make and forms, and transistor G1 adopts commercially available 3CKO2 transistor npn npn to make, and diode G2 adopts commercially available 1N4004 type diode component to make.

The utility model cross complaint logical circuit 6 is made up of operational amplifier G3, diode G4, G5, G6, and its effect is to detect calling signal and called signal, adopts time priority, takes place when avoiding calling signal and called signal to occur simultaneously " collision ".

Wherein loop current testing circuit 3 goes out end 3, it is anodal and connect with diode G4 that loop is gone into end 3 to M line signaling conversion circuit 5, diode G4 negative pole and operational amplifier G3 go into end 1, resistance R 2, R3 one end also connects, its negative pole goes out to hold with E line states testing circuit 7 and is connected behind resistance R 2 other ends serial connections diode G5, operational amplifier G3 goes into end 2 and resistance R 4, R5 one end also connects, go out the end 3 and resistance R 4 other ends, diode G6 negative pole also connects, diode G6 positive pole is gone into end with E line states testing circuit 7 and is connected resistance R 3, the R5 other end is connected with DC power supply 8 negative V1 power ends respectively.

Embodiment operational amplifier G3 adopts commercially available TL084 type integrated package to make, and diode G4, G5, G6 adopt commercially available 1N4004 type diode component to make.Loop is output signals according to loop current testing circuit 3 to 5 its effects of M line signaling conversion circuit, and it is converted to M line direct current signal corresponding to loop signals.7 its effects of E line states testing circuit are to remove control loop signal generating circuit 2 and called control circuit 4 according to the variation generation control signal corresponding of E line states.Loop all adopts the related circuit schematic diagram in the SCPC satellite earth station cable voice port equipment that Canadian SPAR company introduces to make to M line signaling conversion circuit 5, E line states testing circuit 7.DC power supply 8 embodiment adopt DC power supply circuit self-control commonly used to make, and the negative V1 voltage of its output is negative 12 volts of voltages, and the negative V2 voltage of output is negative 48 volts of voltages.

The concise and to the point operation principle of the utility model is as follows: in idle condition, logic switch 1 is switch out-trunk place in circuit, and convertor user line is disconnected, when Seize ACK message occurring on the switch out-trunk, loop current testing circuit 3 is this conversion of signals a dc control signal, and divides two-way output.One the tunnel gives loop to M line signaling conversion circuit 5, makes it produce the output of M line signal, and changes with the signal that continues on the switch out-trunk; Cross complaint logical circuit 6 is given on another road, and it produces a control signal, makes E line states testing circuit 7 not respond E line signal.When E line signal at first occurred, E line states testing circuit 7 also produced two control signals, gave cross complaint logical circuit 6 for one and produced a control signal, made loop not respond the control signal of loop current testing circuit 3 outputs to M line signaling conversion circuit 5; Another gives called control circuit 4 simultaneously and loop signals produces circuit 2, at this moment, called control circuit 4 produces a control signal makes logic switch 1 the convertor user line place in circuit, and the switch out-trunk is disconnected, the time delayed signal of called control circuit 4 is enough to eliminate the influence of dial impulse on the E line, therefore, it only to pluck/on-hook signal makes a response, thereby keep circuit unimpeded; And loop signals generation circuit 2 is the variations with E line signal, loop signals is inserted the subscriber exchange line intermittently, thereby the conversion of complete connection signal realizes two-way fully automatic selection communication.

The utility model structure is installed as follows: the circuit element of Fig. 1 to Fig. 4 parts is installed in 148 millimeters of block lengths, on the wide 140 millimeters printed panel, then printed panel be installed in one long 151 millimeters, wide 142 millimeters, in the high 36 millimeters card cage, the switch out-trunk is installed on the panel of card cage, terminal block end A, the socket of B, and voice channel terminal terminating set C also is installed holds socket, M line D holds socket, E line P holds socket, during use each mounting receptacle of the present utility model just is connected with corresponding external device (ED) and can realizes two-way automatic dialing, therefore the utility model is manipulated easy, maintenance easily, need not do any change to existing communication equipment and just can finish required function, have practical reference value.

Claims

1, a kind of two-way fully automatic selection device, produce circuit (2) by loop signals, loop current testing circuit (3), loop is to M line signaling conversion circuit (5), E line states testing circuit (7), DC power supply (8) is formed, it is characterized in that logic switch (1) in addition, called control circuit (4), cross complaint logical circuit (6) is formed, wherein the discrepancy end A of switch out-trunk comes in and goes out with logic switch (1) and holds 1 to be connected, convertor user line is come in and gone out and is held B and logic switch (1) discrepancy end 2 to be connected, logic switch (1) discrepancy end 5 is connected with speech channel terminating set C end, go out end 3 serial connection loop current testing circuits (3) and go into end 1, be connected in series loop again after going out to hold 2 and go into end 1 to M line signaling conversion circuit (5), going out end 2 backs is connected with direct current signaling M line D end, loop current testing circuit (3) goes out end 3 and goes into to hold 1 to be connected with cross complaint logical circuit (6), cross complaint logical circuit (6) goes out end 2 and goes into to hold 3 to be connected with loop to M line signaling conversion circuit (5), E line states testing circuit (7) discrepancy end 2 is come in and gone out with cross complaint logical circuit (6) and is held 3 to be connected, E line states testing circuit (7) goes out goes into to hold 4 to be connected with logic switch (1) after end 1 one tunnel is connected in series called control circuit (4), go out and go into to hold 6 to be connected with logic switch (1) after end 1 another road serial connection loop signals produces circuit (2), go into end 3 and be connected with the P end of direct current signaling E line, the negative V1 end of DC power supply (8) output is connected with cross complaint logical circuit (6) power end, the negative V2 end of output is connected with called control circuit (4) power end.

2, two-way fully automatic selection device according to claim 1, it is characterized in that logic switch (1) is by relay (K2) the contact K2-1 in the called control circuit (4), K2-2 forms, wherein the discrepancy end A of switch out-trunk respectively with relay (K2) contact K2-1, K2-2 one moving contact 1, loop current testing circuit (3) is gone into end 1 and is connect, convertor user line come in and go out end B and loop signals produce circuit (2) go out end respectively with relay (K2) contact K2-1, another moving contact 2 of K2-2 also connects, voice channel terminal terminating set C end and relay (K2) contact K2-1, the fixed juncture 3 of K2-2 connects.

3, two-way fully automatic selection device according to claim 1 and 2, it is characterized in that called control circuit (4) is by E line states testing circuit (7) repeat circuit contact K1, transistor (G1), diode (G2), relay (K2) is formed, wherein relay contact K1 fixed juncture 3 is connected with the negative V2 end of DC power supply (8), one moving contact 2 is connected with the ground end, be connected with transistor (G1) base stage behind another moving contact 1 series resistor R1, capacitor C 1 one ends and transistor (G1) base stage also connect, other end earth terminal, transistor (G1) collector electrode is connected with the negative V2 end of DC power supply (8), be connected with the ground end behind emitter one tunnel serial connection relay K 2 coils, another its negative pole of road serial connection diode (G2) back is connected with the ground end.

4, according to claim 1 or 3 described two-way fully automatic selection devices, it is characterized in that cross complaint logical circuit (6) is by operational amplifier (G3), diode (G4), (G5), (G6) form, wherein loop current testing circuit (3) goes out end 3, it is anodal and connect with diode (G4) that loop is gone into end 3 to M line signaling conversion circuit (5), diode (G4) negative pole and operational amplifier (G3) are gone into end 1, resistance R 2, R3 one end also connects, its negative pole goes out to hold with E line states testing circuit (7) and is connected behind resistance R 2 other ends serial connections diode G5, operational amplifier (G3) is gone into end 2 and resistance R 4, R5 one end also connects, go out the end 3 and resistance R 4 other ends, diode (G6) negative pole also connects, diode (G6) positive pole is gone into end with E line states testing circuit (7) and is connected resistance R 3, the R5 other end is connected with the negative V1 power end of DC power supply (8) respectively.