CN2158157Y - Customer self-disconnecting ring apparatus for interface circuit of subscriber's line - Google Patents
Customer self-disconnecting ring apparatus for interface circuit of subscriber's line Download PDFInfo
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- CN2158157Y CN2158157Y CN 93206771 CN93206771U CN2158157Y CN 2158157 Y CN2158157 Y CN 2158157Y CN 93206771 CN93206771 CN 93206771 CN 93206771 U CN93206771 U CN 93206771U CN 2158157 Y CN2158157 Y CN 2158157Y
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- interface circuit
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- subscriber line
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Abstract
The utility model relates to a customer self-disconnecting ring apparatus for an interface circuit of the telephone customer line. When a program-controlled exchanger sends ringing current to a called customer, the called customer can disconnect the ringing current by oneself after a telephone is taken up. The utility model is composed of a sampling part, a filtering part, a comparing part, a clamping part, a ring driving part, a filtering control switch part and an external-connection identifying control part which are connected. The utility model carries out sampling detection for the circuit of customers and reduces or eliminates the influence of ringing current signal through filtering waves so as to obtain signal which can accurately reflect the operating state of customer and make the customer disconnect the ringing current signal by oneself after the telephone is taken up.
Description
The user that the utility model relates to a kind of telephone subscriber line interface circuit cuts out the bell device, and particularly a kind of switch can be cut out the device except that ringing-current voluntarily behind called subscriber's off-hook when the called subscriber send ringing-current.
Subscriber Line Interface Circuit is the interface phone between switch control circuit and user, and nearly all Subscriber Line Interface Circuit all must have functions such as feed, ring, overvoltage protection, test, monitoring, mixing.
At present in several Subscriber Line Interface Circuit of using, the MH88500 of Canada Mitel company is more common, the deficiency of its existence is not enough to the monitoring function of subscriber line circuit, promptly work as switch and present ringing-current to the called subscriber, after called subscriber's off-hook is replied, can not disconnect ringing-current immediately, and the User Status can only rely on CPU in the switch to go to detect identification ring gap the time, the user is after during the ring like this, ringing-current can not break immediately, makes the high pressure ringing signal seal in the talking path, both substation is caused damage, may make substation produce powerful ringing-current noise again, the physical and mental health of speaking sarcastically is arranged.
The purpose of this utility model is to provide a kind of user of Subscriber Line Interface Circuit the bell device of committing suicide, and it can cut out the device except that ringing-current voluntarily behind called subscriber's off-hook at switch when the called subscriber send ringing-current.
The utility model is achieved through the following technical solutions: shown in figure one, a kind of user of Subscriber Line Interface Circuit bell device of committing suicide, it is characterized in that: this device is connected in the circuit of programme-controlled exchange machine testing user job state, by sampling part (1), filtering part (2), rating unit (3), clamp part (4), ring drive part (5), filtering control switch part (6), external identification control part (7) connects to form, the input of sampling part (1) is connected in the programme-controlled exchange machine testing user job status circuit, the input of output termination filtering part (2), the input of the output termination rating unit (3) of filtering part (2), the output of rating unit (3) connects clamp part (4) respectively, the input of external identification control part (7), the input of the output termination ring drive part (5) of clamp part (4), the output of external identification control part (7) connects another input of ring drive part (5) and the input of filtering control switch part (6), another input of the output termination filtering part (2) of filtering control switch part (6) respectively.
This device also can include a state display part branch (8), links to each other with an output of rating unit (3), and this state display part branch (8) can adopt a light-emitting diode.
Sampling part (1) can adopt a lead to be connected on directly that a sampling point forms in the local loop, and sampled signal is transferred to filtering part (2); Also can adopt a transformer or photoelectrical coupler to be serially connected in the local loop, the signal of output reflection local loop state is given filtering part (2); Also can adopt a differential amplifier, a string sample resistance in local loop is arranged between the in-phase input end of this difference amplifier and the inverting input, its output is transferred to filtering part (2) as sampling point with sampled signal.
Filtering part (2) can be connected and composed by a resistance, an electric capacity, the output of resistance one termination sampling part (1) wherein, the output of the one termination filtering control switch part (6) of electric capacity, the other end of resistance and electric capacity links to each other and with the input that connects rating unit (3), can weaken or eliminate the influence of ringing signal.
Rating unit (3) can adopt an amplifier, the accept filter output signal of part (2) of its normal phase input end, the external variable voltage signal of inverting input, the input of output termination clamp part (4), external identification control part (7); Also can adopt a comparator, its normal phase input end accept filter the part (2) output signal, inverting input receives the voltage ratio signal of relevant power supply of two resistance and ground wire, or external one variable voltage signal, output termination clamp part (4), the input of external identification control part (7).
Clamp part (4) can adopt a diode to form; Also can adopt a resistance and a triode to be in series; Also can adopt a resistance and a metal-oxide-semiconductor to be in series; Also can adopt outer computer control, import a signal at the input of rating unit (3) and output respectively and play clamping action.
Ring drive part (5) can adopt a resistance, a transistor, a diode and a relay to connect and compose, transistor base connects the output of clamp part (4), and by a resistance or voltage-stabiliser tube and external identification control partly the output of (7) link to each other, grounded emitter, one end of collector connecting relay, another termination positive supply of relay, diode is connected in the two ends of relay, is used for suppressing the induced voltage and the induced current that produce when being disconnected by relay.
Filtering control switch part (6) can adopt two resistance (or a resistance, a voltage-stabiliser tube), a transistor to connect and compose, the output of the external identification control of a termination of a resistance or voltage-stabiliser tube part (7) wherein, the base stage of another termination triode, the grounded emitter of triode is connected to another resistance between base stage and collector electrode; Filtered switch control section (6) also can adopt a relay switch or a simulant electronic switch.
External identification control part (7) can adopt a computer, to detect User Status and to be discerned, sends corresponding control information.
Advantage of the present utility model is by detection that user loop is taken a sample, and weakens or eliminates the influence of ringing signal through filtering, thereby obtains accurately reflecting the signal of user job state, makes to cut out except that ringing signal voluntarily behind called subscriber's circuit off-hook.
Description of drawings:
Fig. 1 is a functional-block diagram of the present utility model
Fig. 2 is the circuit diagram of the utility model most preferred embodiment
Most preferred embodiment: as shown in Figure 1 and Figure 2.
A kind of user of Subscriber Line Interface Circuit bell device of committing suicide, be connected in the circuit of programme-controlled exchange machine testing user job state, by sampling part (1), filtering part (2), rating unit (3), clamp part (4), ring drive part (5), filtering control switch part (6), external identification control part (7) connects to form, the input of sampling part (1) is connected in the programme-controlled exchange machine testing user job status circuit, the input of output termination filtering part (2), the input of the output termination rating unit (3) of filtering part (2), the output of rating unit (3) connects clamp part (4) respectively, the input of external identification control part (7), the input of the output termination ring drive part (5) of clamp part (4), the output of external identification control part (7) connects another input of ring drive part (5) and the input of filtering control switch part (6), another input of the output termination filtering part (2) of filtering control switch part (6) respectively.
This device also includes a state display part branch, links to each other with an output of rating unit (3), and this state display part divides employing one light-emitting diode.
Sampling part (1) adopts a lead to be connected on directly that a sampling point A forms in the local loop, and sampled signal is transferred to filtering part (2).
Filtering part (2) is made of a resistance, an electric capacity parallel connection.
Rating unit (3) adopts an amplifier, its normal phase input end accept filter the part (2) output signal, the voltage ratio signal of inverting input relevant power supply of external two resistance and ground wire, the input of output termination clamp part (4), external identification control part (7).
Clamp part (4) adopts a diode to form.
Ring drive part (5) adopts a resistance, a transistor, a diode and a relay to connect and compose, transistor base connects the output of clamp part (4), and by a resistance or voltage-stabiliser tube and external identification control partly the output of (7) link to each other, grounded emitter, one end of collector connecting relay, another termination positive supply of relay, diode is connected in the two ends of relay, is used for suppressing the induced voltage and the induced current that produce when being disconnected by relay.
Filtering control switch part (6) adopts two resistance, transistors to connect and compose, the output of the external identification control of a termination of resistance part (7) wherein, the base stage of another termination triode, the grounded emitter of triode is connected to another resistance between base stage and collector electrode.
External identification control part (7) adopts a computer, to detect User Status and to be discerned, sends corresponding control information.
State display part divides employing one light-emitting diode.
Claims (19)
1, a kind of user of Subscriber Line Interface Circuit bell device of committing suicide, it is characterized in that: this device is connected in the circuit of programme-controlled exchange machine testing user job state, by sampling part (1), filtering part (2), rating unit (3), clamp part (4), ring drive part (5), filtering control switch part (6), external identification control part (7) connects to form, the input of sampling part (1) is connected in the programme-controlled exchange machine testing user job status circuit, the input of output termination filtering part (2), the input of the output termination rating unit (3) of filtering part (2), the output of rating unit (3) connects clamp part (4) respectively, the input of external identification control part (7), the input of the output termination ring drive part (5) of clamp part (4), the output of external identification control part (7) connects another input of ring drive part (5) and the input of filtering control switch part (6), another input of the output termination filtering part (2) of filtering control switch part (6) respectively.
2, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: this device also can include a state display part branch (8), links to each other with an output of rating unit (3).
3, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: sampling part (1) can adopt a lead directly to be connected in the local loop sampling sampling part (1) and can adopt a lead to be connected on directly that a sampling point forms in the local loop, sampled signal is transferred to filtering part (2).
4, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: sampling part (1) can adopt the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: sampling part (1) can adopt a transformer or photoelectrical coupler to be serially connected in the local loop, and the signal of output reflection local loop state is given filtering part (2).
5, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: sampling part (1) can adopt and can adopt a differential amplifier, a string sample resistance in local loop is arranged between the in-phase input end of this difference amplifier and the inverting input, its output is transferred to filtering part (2) as sampling point with sampled signal.
6, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: filtering part (2) can be connected and composed by a resistance, an electric capacity, the output of resistance one termination sampling part (1) wherein, the output of the one termination filtering control switch part (6) of electric capacity, the other end of resistance and electric capacity links to each other and with the input that connects rating unit (3), can weaken or eliminate the influence of ringing signal.
7, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: rating unit (3) can adopt an amplifier, its normal phase input end accept filter the part (2) output signal, the external variable voltage signal of inverting input, the input of output termination clamp part (4), external identification control part (7).
8, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: rating unit (3) can adopt a comparator, its normal phase input end accept filter the part (2) output signal, inverting input receives the voltage ratio signal of relevant power supply of two resistance and ground wire, or external one variable voltage signal, output termination clamp part (4), the input of external identification control part (7).
9, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide is characterized in that: clamp part (4) can adopt a diode to form.
10, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide is characterized in that: clamp part (4) can adopt a resistance and a triode to be in series.
11, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide is characterized in that: clamp part (4) can adopt a resistance and a metal-oxide-semiconductor to be in series.
12, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide is characterized in that: clamp part (4) can adopt outer computer control, imports a signal at the input of rating unit (3) and output respectively and plays clamping action.
13, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: ring drive part (5) can adopt a resistance, one transistor, one diode and a relay connect and compose, transistor base connects the output of clamp part (4), and by a resistance or voltage-stabiliser tube and external identification control partly the output of (7) link to each other, grounded emitter, one end of collector connecting relay, another termination positive supply of relay, diode is connected in the two ends of relay, is used for suppressing the induced voltage and the induced current that produce when being disconnected by relay.
14, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: filtering control switch part (6) can adopt two resistance, a transistor to connect and compose, the output of the external identification control of a termination of resistance part (7) wherein, the base stage of another termination triode, the grounded emitter of triode is connected to another resistance between base stage and collector electrode.
15, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: filtering control switch part (6) can adopt a resistance, a voltage-stabiliser tube, a transistor to connect and compose, the output of the external identification control of a termination of voltage-stabiliser tube part (7) wherein, the base stage of another termination triode, the grounded emitter of triode is connected to another resistance between base stage and collector electrode
16, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: filtered switch control section (6) can adopt a relay switch.
17, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide, it is characterized in that: filtered switch control section (6) can adopt a simulant electronic switch.
18, the user of the Subscriber Line Interface Circuit according to claim 1 bell device of committing suicide is characterized in that: external identification control part (7) can adopt a computer, to detect User Status and to be discerned, sends corresponding control information.
19, the user of the Subscriber Line Interface Circuit according to claim 2 bell device of committing suicide is characterized in that: state display part is divided can adopt a light-emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93206771 CN2158157Y (en) | 1993-03-25 | 1993-03-25 | Customer self-disconnecting ring apparatus for interface circuit of subscriber's line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93206771 CN2158157Y (en) | 1993-03-25 | 1993-03-25 | Customer self-disconnecting ring apparatus for interface circuit of subscriber's line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158157Y true CN2158157Y (en) | 1994-03-02 |
Family
ID=33789693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93206771 Expired - Fee Related CN2158157Y (en) | 1993-03-25 | 1993-03-25 | Customer self-disconnecting ring apparatus for interface circuit of subscriber's line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158157Y (en) |
-
1993
- 1993-03-25 CN CN 93206771 patent/CN2158157Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |