CN2124531U - Dial telephone with improved bell circuit - Google Patents

Abstract

The utility model relates to a dial telephone with an improved bell circuit, which can report a caller's ID automatically. The utility model comprises a dial-up circuit, a talking circuit and a bell circuit, wherein, the bell circuit is composed of a bell receiving circuit, an IC auto-reporting signal operating circuit and a loudspeaker. The connecting status of the bell circuit cord is controlled by the called party's telephone. When a calling is dialed up, the called party is started to send out the auto-reporting caller's ID signal through the loudspeaker, and simultaneously the signal is sent back to the caller's telephone. The auto-reporting caller's ID signal is composed of some specific musical tones. The utility model is of great advantage to increase the call completing rate of the telephone and decrease the ineffective holding time of telephone lines; therefore, the service quality of telecom department can be greatly enhanced.

Description

Dial telephone with improved bell circuit

The utility model relates to a kind of automatic telephone, specifically a kind of self-reported account name automatic telephone that the bell circuit has been improved.

At present, the telephone connection process is, after calling subscriber's dialing, the switch numerical selection continues, and send ring-back tone to called subscriber's ring and to the calling subscriber again, treats called subscriber's off-hook, send listening circuit to connect, and ring and ring-back tone stop, the two parties conversation.If called unmanned or phone obstacle, ring-back tone still continues more than, till caller is hung up.

Task of the present utility model is to change traditional jingle bell and the ring mode of automatic telephone, designs a kind of automatic telephone by called control connection state.The machine line ineffective occupation time can be effectively shortened in this design, helps improving call completing rate, can play the effect of telegage line fault simultaneously again.

The utility model realizes that in the following manner self-reported account name's automatic telephone comprises dial-up circuit, speaking circuit and bell circuit.The bell circuit also comprises receives bell circuit, IC self-reported account name signal operating circuit and loud speaker.Receiving the bell circuit is made of retardation coil L, halfwave rectifier D1, D2, capacitor C3, C2 and voltage-stabiliser tube D3.1C self-reported account name signal operating circuit comprises a 1C trigger-delay circuit of being made up of R1, C1, provides power supply by the C2 that sets up voltage of direct-flow voltage regulation, D3.The connection state of calling and called bell circuit cord circuit is controlled by callee's phone.When a certain phone by dial-up, promptly start this self-reported account name's signal, make switch turn to on-state from ringing condition, send self-reported account name's signal simultaneously, this signal is emitted through loud speaker, turns back to the calling subscriber simultaneously, makes caller hear ring-back tone.Caller from ring-back tone, can recognize institute dial the number whether accurate, called whether organic line fault.Phone name in an account book signal represents with the music language sound, comprise telephone number, trunk code and country, area code.When called off-hook, self-reported account name's signal stops, and both sides change conversation over to; Do not answer as called, to the regulation time limit, signal has been put in the IC integrated package, changes hook state automatically over to, and the calling subscriber listens busy tone; As called machine line fault, then can not start called self-reported account name's signal, ring-back tone is can't hear in caller can take corresponding measure, and needn't account for the machine line by sky.

Specify below in conjunction with accompanying drawing.

Fig. 1 is existing telephone exchange handshaking procedure figure.

Fig. 2 is the utility model telephone exchange handshaking procedure figure.

Fig. 3 is self-reported account name's station ringer circuit theory diagrams.

Referring to Fig. 1, the calling subscribe dials called number 1 after listening dialing tone, and the automatic switch-board numerical selection continues 2, then to called subscriber's ring 3, send ring-back tone 4 to the calling subscribe simultaneously, behind called subscriber's off-hook 5, ring and ring-back tone stop 6, two parties conversation 7, talk-through both sides on-hook takes out stitches 8, if called nobody 9, called phone continues ring, caller continues institute's ring-back tone, until till caller hangs up.

Referring to Fig. 2, the calling subscribe dials 1, the switch numerical selection continues 2, starts called subscriber self-reported account name circuit 11, and called subscriber's phone loudspeaker sends self-reported account name's signal 12, send self-reported account name's signal 13 to the calling subscribe simultaneously, called off-hook 5, both sides' signal ends 14, takes out stitches 8 after the conversation 7, if called nobody connects 9,15 switches took out stitches 8 after call signal used up; Such as called machine line obstacle 16, then there is not self-reported account name's signal, feedback signal is can't hear in caller, and The Calling Party Hooks On 10, and switch takes out stitches 8.

Referring to Fig. 3, self-reported account name's station ringer circuit comprises following element.

The ROM music language integrated package of IC storage self-reported account name signal;

The L choking coil, the conversation audio rate is high impedance.Its effect is that (1) reduces the shunting to speech in communication process, and it is again the DC channel of amplifier tube BG simultaneously.(2) when feedback self-reported account name signal, it is the part of load impedance, is used for regulating the level of self-reported account name's signal.(3) cooperate with C3, D1D2, for IC provides dc supply;

C3 stopping direct current feedback condenser.Automatic switch-board is when called terminal ringing, and ringing-current is by the dc supply of C3 and D2D1 foundation.After IC started, automatic switch-board stopped sending ringing-current, and the dc supply of IC changes by self-reported account name's signal and feeds back through C3;

D1D2 provides the rectifying tube of working power for IC;

D3 provides the voltage-stabiliser tube of operating voltage for IC;

D4 protection BG diode;

The B output transformer.Because loud speaker is a low-resistance, the local telephone network switching equipment is high resistant relatively, so need impedance conversion;

BG power amplifier, switch triode.Rise self-reported account name's signal tone amplification and analog telephone off-hook, put the machine on-off action;

C2 IC working power filter.For IC provides working power stably;

R1C1 forms the IC trigger-delay circuit, in case on the principal vertical line road disturbing pulse to the false triggering of IC;

Biasing resistance under the R3 BG.Its scalable self-reported account name signal output size, and can improve the withstand voltage of BG;

IC is the ROM music language integrated circuit block of storage self-reported account name signal, and this circuit is represented user's information itself to comprise telephone number, trunk code and country, area code and test signal with music and language sound.

When a certain calling subscriber's off-hook dialing, put through called phone BH, the ringing-current that automatic switch-board is sent here is got back to automatic switch-board by the W2 end again after W1 terminal, L retardation coil, C3 capacitor, D1D2 halfwave rectifier, C2 filtering, D3 voltage stabilizing.The voltage of direct-flow voltage regulation of setting up on C2, D3 provides working power for self-reported account name's ic chip on the one hand, delays starting IC by R1C1 on the other hand.After IC starts, self-reported account name's information of storing among the IC will be delivered to b, the e utmost point of power tube BG from " 0 ", " 1 " two ends.Because the ringing-current of sending here from automatic switch-board is to be superimposed upon on the conversation DC power supply, this DC power supply is by D4 and transformer B is elementary has been added on power tube c, the e.Do not having under the situation of ringing-current, because IC does not start, BG place cut-off state, the direct current of sending into phone is 0, send b, the e utmost point (it also be the AC signal that be superimposed upon direct voltage on) of self-reported account name's information and work as IC to BG, the electric current that then BG conducting, automatic switch-board are sent here will produce self-reported account name's electric current (being equivalent to called subscriber's off-hook).This electric current makes the automatic switch-board cord circuit that continues convert talking state to by ringing condition on the one hand, on the other hand the secondary call signal (being equivalent to called terminal ringing) from the self-reported account name to loud speaker Y that send of output transformer B.Meanwhile, the self-reported account name's of this electric current alternating component will be divided into the two-way feedback, and (1) feeds back to the automatic switch-board cord circuit by W1W2, is sent to calling subscriber's listening circuit again by cord circuit, and the calling subscriber hears called subscriber's self-reported account name's signal sound simultaneously; (2) by choking coil L with this signal code by C3 coupling, D1D2 rectification working power as IC.When the called subscriber hears self-reported account name's sound and picks up a receiver, the power supply of CH3, CH4 short circuit IC, signal sound stops; CH1, CH2 connect and send listening circuit, and the calling and called both sides enter normal talking.If the called subscriber is off-hook not, then to certain hour (for example being designed to 45 seconds), self-reported account name's information of storing among the IC has all been transferred, IC no signal delivers to b, the e utmost point of BG, BG transfers cut-off state to by conducting, (this is equivalent to the called receiver of putting back to), it is busy that automatic switch-board will make caller listen, and whole calling procedure finishes.

Below be embodiment.

Repack self-reported account name's telephone set into HD890 dialing disc type phone.Remove former power ringing, self-reported account name's circuit board and loud speaker are installed in former power ringing place.IC self-reported account name music signal integrated package adopts common music circuit CW9300, signal time 45 seconds.Choking coil is worked as L=H, and feedback signal level (in called W1, W1 amount) is 0-10db; Work as L=2H, the feedback signal level is negative 10-0db.All the other element capacitor C 3 are μ/160V; Rectifier D1D2 is 2CP21; Voltage-stabiliser tube D3 is that 2CW11C or two 1.6V light-emitting diodes replace; Power amplifier, switching diode BG 3DA87D; The diode 2CP22 of protection BG; Output transformer B utilizes the output transformer of transistor radio; C2 is with the working power of 330 μ/16V as IC; The IC trigger-delay circuit R1=5.1k Ω that R1C1 forms, C1=10 μ F; R3 uses 2k Ω as biasing resistance under the BG; Loud speaker adopts 8 Ω 1/4W.Recondition expense, about more than 20 yuan of every phone also can reduce if produce cost in batches by factory.

Two rotary telephone model machines of now having reequiped numerical selection test on the Hunan Emperor XianFeng's crossbar switch and the stored-program control exchange of the wind comes from respectively, respond well, the user is satisfied.After the calling subscriber dials and calls out the called subscriber, self-reported account name's signal feedback is arranged, make caller relieved.Owing to be the music music score of Chinese operas, the user also is willing to listen again, when music stops and listens busy tone, caller promptly to know called unmanned and on-hook rapidly; When music sound is can't hear in caller, and only hear original ringback tone, the called as can be known machine line of caller obstacle, just sky etc. no longer, or notice maintenance.

Touch-tone telephone also having been carried out transformation of the way experiment, carry out the transformation of the way of bell circuit on " 8703 " type button phone, is successful equally, illustrates that this design can adapt to the situation of generally using key pad telephone set at present fully.

This telephone set is owing to have the overtime function of tolling breakdown of called not off-hook and machine line fault does not have feedback signal, so can significantly reduce the ineffective occupation time of switch, also can play the effect of telegage line fault, if can extensively promote, all be fairly obvious to telephone exchange and user's benefit.

Claims (3)

1, a kind of automatic telephone that improves the bell circuit comprises dial-up circuit, speaking circuit, bell circuit, it is characterized in that the bell circuit also comprises receipts bell circuit, IC self-reported account name signal operating circuit and loud speaker; The connection state of calling and called bell circuit cord circuit is controlled by callee's phone.

2, the telephone set of improvement bell circuit according to claim 1 is characterized in that the receipts bell circuit in the bell circuit is made of retardation coil L, halfwave rectifier D1, D2, capacitor C3, C2 and voltage-stabiliser tube D3.

3, the telephone set of improvement bell circuit according to claim 1 is characterized in that the IC self-reported account name signal operating circuit in the bell circuit comprises an IC trigger-delay circuit of being made up of R1, C1, and its power supply is provided by the C2 that sets up voltage of direct-flow voltage regulation, D3.

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