CN2325932Y - Telephone line monitoring arrangement able to interrupt existing connection service without preconditions - Google Patents

Abstract

The utility model discloses a telephone line monitoring device for the connection service of existing telephones in wired telephones without preconditions and the manufacture method of the telephone line monitoring device. The utility model can interrupt the connection service of the existing telephones in the wired telephones without preconditions through exerting voltage on controlling terminals which are connected in parallel in user lines of telephones. The utility model provides a method for interrupting the communication of an unlawful telephone forwardly. The method can prevent the phenomenon of the unfirm ringing off of a telephone. The utility model provides possibility for freely recording telephone numbers dialed by unlawful users. Thus, the utility model is a prolongation for the innovation and the application field of the prior art of wired telephone monitoring. The utility model is best suitable to be used as monitoring devices such as a device for preventing the theft dialing of a telephone, a telephone line failure alarming device, etc. for telephones and telephone lines.

Description

The telephone wire supervising device of the unconditional finished call service of a kind of energy

The utility model relates to a kind of telephone subscribers feeder supervising device that can unconditionally stop the session services of online phone.

Online phone in the telephone refers to be connected in certain bar telephone loop, is in the machine state of getting, and is provided to network by private branch exchange and continue or the phone of session services.In order to narrate conveniently, below networking that private branch exchange the is provided service processes such as conversation that continue and network, be referred to as session services.

In monitoring technique at phone or telephone wire, the online telephone relation service of unconditional termination, or claim this phone is unconditionally hung up, be meant no matter whether active on-hook of the telephone subscriber of this online phone, for providing the telephone user exchange of service, this subscribers feeder all takes out stitches immediately, stop current session services, and revert to the normal hook state of phone.

In order unconditionally to stop the session services to online phone, existing phone-monitoring technology is with control device and subscriber phone series connection, inserts telephone loop then.As long as disconnect series connection supervising device switch inside, just can cut off the loop of subscriber phone, thereby hang up the subscriber phone of conversing to telephone loop.But for the subscriber phone that illegal parallel operation networks, its access point was not subjected to the influence of this series connection supervising device before supervising device.And because this moment, the on-hook of validated user phone was in off state, series connection supervising device even can not detect the existence of illegal networking phone.The series impedance that supervising device inside certainly exists of connecting in addition also may reduce the call performance of controlled phone.

The purpose of this utility model, propose exactly a kind ofly can unconditionally stop all online telephone relation services, especially the supervising device and the manufacture method thereof that comprise the session services of illegal networking phone in parallel, these illegal phones that network can be articulated in any position of telephone loop.

Technical solution of the present utility model is to be provided with pair of control terminal, a control voltage generation part and a control assembly of dispatching this control voltage generation part work that is connected in this control terminal in supervising device.This control terminal is in parallel to insert wired telephone loop, and any phone that inserts on the telephone loop like this with being electrically connected of the control terminal of supervising device, can concern for the parallel connection shown in the figure (1) in equivalence.Control assembly in the supervising device, when the online telephone relation of the unconditional termination of needs is served, control voltage with the generation of control voltage generation part, be applied on the telephone loop by above-mentioned control terminal, and guarantee with telephone loop on direct voltage same polarity original, that provide by telephone user exchange.This control voltage generation part can produce sufficiently high control voltage, is applied on the telephone loop magnitude of voltage and surpasses threshold voltage to guarantee it, still is in the online phone of getting the machine state on this subscribers feeder thereby make, by unconditional finished call service.This threshold voltage magnitude of voltage during greater than hook state on this telephone loop 2/3rds of dc voltage value, but is no more than the supply power voltage of telephone exchange usually.

As everyone knows, on a telephone loop,, have only all telephone sets on this telephone wire so all during on-hook, just can cut sb off if be mounted with in other words the telephone set more than two ones or two ones in parallel.Therefore,, and can also pick up the telephone set of oneself, converse with appropriator even the validated user of phone knows that the telephone wire that has the people usurping oneself is made a phone call; But but can't stop appropriator to continue conversation, but also will pay these telephone expenses.

Compared with prior art, technical solution of the present utility model, owing to adopted network access mode in parallel, can unconditionally stop the conversation of controlled phone, thereby have a series of remarkable advantages.At first; because the conversation of any phone that it unconditionally inserts on the termination telephone subscribers feeder; therefore can stop the dial-up that illegal phone is initiated on one's own initiative; also can be by the method that detects automatically; forbid all calling attempts of illegal phone; thereby thoroughly stop to illegally occupy the phenomenon of other people telephone line, telephoning illegally, protection telephone user's legitimate rights and interests.Secondly, because it has adopted network access mode in parallel, no matter illegal phone is from where parallel connection networks, and the equivalent electric schematic diagram is all the same with figure (1), therefore can monitor from subsets until the scope of the whole piece telephone loop that subscriber exchange exports.The 3rd, prior art can only adopt to send the method for disturbing because can not unconditionally stop the conversation of online phone, stops telephone exchange correctly to receive the telephone number that the disabled user transfers to as far as possible; Certainly supervising device can not correctly receive the telephone number that the disabled user transfers to.Adopt technical solution of the present utility model, need not send any interference, thereby can be before cut-out disabled user's telephone is called out, the telephone number that monitoring and record disabled user transfer to, thus be that public security and telecommunication department find out that stealing group person provides line of force rope.The 4th, it makes people's leading subscriber phone better, by supervising device initiatively force on-hook, thoroughly avoid and stop not hung up properly and damnous phenomenon as telephone set.As seen, this utility model is the once innovation to existing telephone monitoring technique, is the expansion to existing telephone monitoring technique application.

The utility model is suitable for as phone anti-frandulent use device or telephone line accident warning device most.

Below in conjunction with accompanying drawing phone anti-frandulent use device embodiment of the present utility model is described in further detail.

Figure (1) is the isoboles that is electrically connected of the present utility model.

Figure (2) is an embodiment operation principle schematic diagram of the present utility model.

Figure (3) is a control assembly and the enlarged diagram of controlling the voltage generation part among the figure (2).

Shown in figure (1), the dislodging machine testing DC loop of telephone user exchange [1] can equivalence be the series connection of inner direct current supply voltage source [2] and inner equivalent resistance [3]; The dislodging machine DC loop of telephone set [4] can equivalence be the series connection of phone hook switch [5] and phone internal resistance [6].When telephone set [4] off-hook, phone hook switch [5] is closed to be connected, and the subscribers feeder loop is connected has electric current to flow through, and switch then detects user's off-hook.Switch direct current supply power voltage [2] is gone up dividing potential drop in switch internal resistance [3] and telephone set internal resistance [6], and the line voltage U on the subscribers feeder will drop near 9 volts.If the control switch [9] in closed supervising device this moment [7], the inner direct voltage source [8] of control device [7] also will be powered to telephone loop, thereby the line voltage U on the subscribers feeder is withdrawn into subscriber phone [4] off-hook level in the past again.There are not difference, switch will think user's on-hook and finish the normal talking service when at this moment the direct current equivalent state of switch outside will be with user's on-hook.During subscriber phone [4] on-hook, the subscribers feeder voltage U approximates the direct current supply voltage [2] of switch.But in fact, hang up subscriber phone, not need the subscribers feeder voltage U moved to the direct current supply voltage [2] of switch and equate fully.As long as the DC power supply [8] that control device [7] is inner can draw high certain more than the threshold voltage with the subscribers feeder voltage U, just can make the electric current I of the internal resistance of flowing through in the switch [1] [3] enough little, make switch think user's on-hook and finish session services.This threshold voltage magnitude of voltage is greater than 2/3rds of the direct current supply voltage [2] of switch [1], but is no more than the supply power voltage value [2] of telephone exchange usually.For example for the stored-program control exchange of 48 volts of power supplies, this threshold voltage approximately is 40 volts.For the crossbar switch of 60 volts of power supplies, then above 40 volts.

In the utility model embodiment operation principle schematic diagram of figure (2), internal resistance [15] and [17] of the DC power supply [8] that control device [7] is inner have been considered, and a plurality of power supplys [14] and [16] have been adopted, so that a plurality of different supply voltages are provided, for control device at the different power voltage of different switches and distinguish use.Subscribers feeder voltage measurement parts [10] are parallel to telephone loop by measurement terminal [19], are used for measuring normal on-hook voltage on the subscribers feeder, and current magnitude of voltage on the subscribers feeder.Control assembly [11] is according to the testing result of measurement component [10], decision applies or does not apply specific control voltage to telephone loop, and by band switch or MUX [12], with required control voltage by control voltage generation part [13] generation, be applied on the control terminal [18], export by control terminal [18].

Before calling out at the telephone that cuts off the disabled user, monitor and write down the telephone number of disabled user's dial-out, can design a telephone number identification component [20], and be parallel on the telephone loop by measurement terminal [21].

In some design, control assembly [11] can provide a manual toggle switch, whether implements, allows or forbids to apply control voltage by legal telephone subscriber's decision, thereby might omit voltage detecting parts [10].Comprehensive manually and automatic two kinds of control modes, can increase the intelligent degree of supervising device.Better method is to utilize a current sensing means of connecting with the validated user phone, the dislodging machine state of validated user phone is provided to control assembly [11], and when the validated user phone is got machine, perhaps when telephone number identification component [20] detects an effective validated user password, temporarily cancel the control of supervising device to this conversation on the subscriber's telephone line.

In order not influence the normal talking service of validated user, after illegal online phone was hung up reliably, control device should in time be cancelled its control voltage that applies, and can be taken as the hundreds of millisecond this time of delay usually to a few minutes.

Implement main points of the present utility model, be to select suitably power supply.Usually can use battery, [8] as shown in schematic diagram or [14] and [16] are perhaps selected stabilized voltage power supply for use.

Claims (3)

1. supervising device at the telephone subscribers feeder, it is characterized in that: have a pair of control terminal that inserts wired telephone loop in parallel, a control voltage generation part that is connected in this control terminal, control assembly with this control voltage generation part work of a scheduling, the direct voltage that this control assembly produces control voltage generation part, by above-mentioned control terminal, be applied on the telephone loop, make the magnitude of voltage on this telephone loop, during greater than hook state 2/3rds of dc voltage value, thereby unconditionally stop the session services of online phone on this subscribers feeder.

2. supervising device according to claim 1, it is characterized in that: have a pair of measurement terminal that inserts wired telephone loop in parallel, and voltage measurement parts that are connected in this measurement terminal, these voltage measurement parts can be by above-mentioned measurement terminal, measure the magnitude of voltage on the telephone loop, above-mentioned measurement terminal can with the multiplexing same physical connection of aforementioned control terminal.

3. supervising device according to claim 1 and 2, it is characterized in that: have a pair of measurement terminal that inserts wired telephone loop in parallel, and dialing measurement component that is connected in this measurement terminal, this dialing measurement component can be by above-mentioned measurement terminal, identify the pulse or the DTMF pulsing signal that transmit by this telephone loop, above-mentioned measurement terminal can with aforementioned control terminal or the multiplexing same physical connection of aforementioned measurement terminal.