CN2134756Y - Multifunctional pulsive telephone calling device - Google Patents

Abstract

The utility model relates to a phone calling device which uses a plurality of telephones to work in parallel. The device is composed of an on-duty telephone circuit, a subscriber's extension station circuit, a dial impulse producing circuit, a dial impulse controlling circuit, a dial impulse counting circuit, a dial impulse sharing circuit, a busy tone circuit, a ringing current control circuit and a feed circuit of power supply. A relay is connected with a small plurality of electronic devices of low power consumption, and thus, the utility model solves the problem of interference of ringing, calling and mutual communication of the telephones with doubling lines. In actual operation, one on-duty telephone and N subscriber's extension stations are connected with the utility model, and a pair of subscriber's lines are used for only occupying one telephone number. The utility model has the advantages of simple device, easy application and ordinary elements without specific processing technic.

Description

Multifunctional pulsive telephone calling device

The utility model relates to the telephone set of frequent parallel operation work in the wired communication system.

When jack per line is used in the shared a pair of outside lines of several telephone sets, if then several phone rings simultaneously when the outside line incoming call is arranged.Whom this kind situation is difficult to distinguish is the object of External Call, have to adopt exclusion method to allow the other side dial again and be several times or run to the advise called subscriber off-hook, this is very inconvenient to the user, and if when wanting to converse between several telephone sets, then be difficult to realize, and have ring to disturb to other phones during dialing.

The purpose of this utility model is exactly the problem that ring is disturbed when communicating with each other and dialling between ring simultaneously when solving parallel operation, the subscriber's extension station, the call accepted and the paging method of calling mutually when improving the shared a pair of outside line of several telephone sets.

The purpose of this utility model is achieved in that this device is connected between outside line and alert station and the subscriber's extension station.When External Call, after alert station ring, off-hook are asked the subscriber's extension station that the other side looked for clearly, the inside/outside change over switch is got to dial behind the position of " interior " and be, notify from a phone call the interior lines subscriber's extension station and converse; Can dial earlier when subscriber's extension station is called out outside line and can hear the dialing tone that telephone office sends here after pilot number " divides the board number to add 1 ", dial user number and its conversation then; Conversation the time can be dialed directly extension number " 1～N " and can be conversed between collinear each subscriber's extension station, and during the conversation of two users' extension set except that alert station other users can not insert by force, realize that conversation is secret.

The utility model is made of nine parts such as alert station circuit, subscriber's extension station circuit, dial impulse generation, control, counting, distributor circuit, busy tone, ringing-current control circuit and power-supplying circuits, and the effect of alert station circuit is:

1. when the outside line incoming call, transfer the call on the subscriber's extension station of interior lines by dialing;

2. eliminating the subscriber's extension station dialing when the interior lines subscriber's extension station is breathed out disturbs the ring of alert station.

The effect of subscriber's extension station circuit is:

1. receive the alert station ring, cut off ringing-current behind the off-hook;

2. during conversing, keep audio-frequency current;

3. make back off-hook subscriber's extension station listen busy tone;

4. send out dial impulse when dialling.

The effect of dial impulse generation, control, counting, distributor circuit is: the dial impulse that alert station circuit or subscriber's extension station circuit are transmitted receives and is assigned to corresponding subscriber's extension station circuit and gets on and make its ring by control gate.

Busy tone, ringing-current control circuit are provided with for controlling ring and sending out a busy tone.Power-supplying circuit is used for to the power supply of this device and the ringing signal source is provided.

The utility model is because the direct control mode of employing pulse realizes conversation and the mutual conversation of subscriber's extension station between subscriber's extension station and the alert station, thereby can adopt common components and parts and modular structure, be convenient to increase number of users, maintenance, easy and simple to handle, implement easily, need not the special process requirement.

Physical circuit operation principle of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is according to the static electrical schematic diagram that the utility model proposes.Now the embodiment that is 9 subscriber's extension stations in conjunction with interior lines illustrates operation principle of the present utility model.

Alert station ring, off-hook are asked the subscriber's extension station that the other side looked for clearly when the outside line incoming call, for example behind the 2# subscriber's extension station, the inside/outside change over switch are got to the position of " interior ", J _N+1The relay adhesive, j _N+1-1Contact open circuit, J _PRelay discharges j _P-1Contact open circuit, j _P-2Junction closure J _YThe relay adhesive, j _Y-1Junction closure is the ready work of step-by-step counting; j _Y-2Junction closure makes J _mRelay passes through j _M-2The open and close pulsation of contact is by j _M-1The contact pulsation produces interrupted busy-back signal; j _P-3Thereby junction closure cuts off the supply access of back off-hook subscriber's extension station; This moment, alert station was dialled J behind " 2 " number _PPulsation twice is because J _YAlso there is an electric capacity at the two ends of relay and slow putting, so umber of pulse can be deposited in the counter, make S behind distributor ₂Be level"1", thereby make ringing-current by j _P-4Contact, S ₂Door ₂, j _2-2Contact flows into 2 ^#The phone ring is when 2 ^#Power supply is by diode D behind the receiver off-book ₁, S ₂Door ₁, J ₂Relay adhesive, j _2-2The contact open circuit cuts off ring, j _2-1Contact open circuit makes J _PRelay still is in release condition, j after the alert station on-hook _2-2Junction closure is realized J ₂The relay self-insurance guarantees that conversation is reliable, j _2-4Junction closure is with outside line and 2 ^#Subscriber's extension station is connected, and realizes once notifying from a phone call; After the talk-through 2 ^#The subscriber's extension station on-hook makes J ₂Relay discharges, j _2-2Junction closure J _PRelay adhesive, j _P-1Junction closure, j _P-2Contact open circuit, J _YThe slow j of putting of relay _Y-1The zero clearing of contact open circuit pulse counter is for calling is next time prepared, j _Y-2Contact open circuit J _mRelay is slow puts stop sending out interrupted busy-back signal, j _P-3The contact open circuit is the open supply access of other subscriber's extension stations, j _P-4The contact open circuit cuts off ringing-current.

Compare with prior art, the utility model has the advantages that and adopt relay and a small amount of low-power consumption, small scale integration and common electronic devices and components, by organic connection so that the user in the situation of only having a number of pair of telephone lines, satisfy many extensions and connect the demand of work, greatly improve the utilization rate of subscribers feeder, be specially adapted to the public places such as phonebooth, small-sized machine-operated enterprise and residential block.

Claims (7)

1, two or two above phones of a kind of usefulness use the multifunctional pulse phone page device of jack per line parallel operation work, this device is by the alert station circuit, subscriber's extension station circuit, dial impulse generation, control, counting, distributor circuit, busy tone, ringing-current control and power-supplying circuit nine partial circuits constitute, and it is characterized in that: this device adopts relay, resistance, electric capacity, field effect analog switch, general-purpose diode, N system pulse counter, pulsqe distributor and the NAND gate chip of four groups of changeover contacts, integrated power supply module to constitute.

2, according to the described device of claim 1, it is characterized in that: described alert station circuit comprises relay J _N+1, field effect analog switch S _N+1, S _N+1, S _N+1, light-emitting diode D ₂, D ₃, double-point double-throw switch K _1-1, K _1-2

3, according to the described device of claim 1, it is characterized in that: described subscriber's extension station circuit comprises relay J _n, field effect analog switch Sn door 1, Sn door 2, light-emitting diode D _N3, general-purpose diode D _N1, D _N2, capacitor C _N1, contact group j _N-2, j _N-3, j _N-4, n is a subscriber's extension station number.

4, according to the described device of claim 1, it is characterized in that: described dial impulse generation, control, counting, distributor circuit comprise relay J p, J _Y, general-purpose diode D ₀, D ₁, electrochemical capacitor C ₀, C ₃, C ₄, resistance R ₀, R ₁, R ₂, R ₃, NAND gate S _N+1, n system counter, pulsqe distributor integrated circuit, contact group j _P-1, j _P-2, j _P-3, j _Y-1With j _F-1, j _2-1... j _N-1, j _N+1-1

5, according to the described device of claim 1, it is characterized in that: described busy tone control circuit comprises relay J m, electrochemical capacitor C ₂, contact group j _M-1, j _M-2, j _Y-2

6, according to the described device of claim 1, it is characterized in that: described ringing-current control circuit and power-supplying circuit comprise contact group j _P-4, 30 volts/50 all AC power, positive 24 volts of relay power supplies, positive 5 volts of integrated circuit power supplies.

7, according to the described device of claim 1, it is characterized in that: suppose that this device is associated with N platform subscriber's extension station and an alert station, the alert station ring is dialled words by operator on duty's operation and is notified from a phone call the interior lines subscriber's extension station when the outside line incoming call; Dial earlier when the interior lines subscriber's extension stations is called out outside line and dial outside line user number can converse (this moment alert station is not had and beat) behind the pilot number " N+1 " again; The operator on duty calls out outside line and does not add pilot number; The interior lines subscriber's extension station is called out and can be dialed directly the extension number conversation, and the third party can not be situated between when conversation, realizes conversing and maintains secrecy, and alert station has intrusion interior lines call function.

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