CN201328133Y

CN201328133Y - A telephone interface circuit and telephone interface device

Info

Publication number: CN201328133Y
Application number: CNU2008202358800U
Authority: CN
Inventors: 胡建和; 徐国权
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2009-10-14
Anticipated expiration: 2018-12-30

Abstract

The utility model is applicable to the communication technology and provides a telephone interface circuit and a telephone interface device. The telephone interface circuit comprises a switch control module connected with the control circuit of the telephone interface device, an interface module connected with the switch control module and a telephone line. In the utility model, the control circuit of the telephone interface device only needs to send control signals to the switch control module, and the interface module can achieve different interface functions to make the telephone interface circuit be respectively operated in a user interface state, a relay interface state or a magnet interface state, thereby the telephone interface device can achieve arbitrary connection functions through a single telephone line and a telephone set, other telephone switches and a magneto telephone set. Such telephone has the advantages of small size and low use cost.

Description

A kind of telephone interface circuit and telephony interface equipment

Technical field

The utility model belongs to the technical field of communication, relates in particular to a kind of telephone interface circuit and telephony interface equipment.

Background technology

Telephony interface equipment is widely used in the military communication field, be indispensable military communication equipment, the telephone interface circuit of existing telephony interface equipment as shown in Figure 1, it mainly comprises Subscriber Interface Module SIM 10, TIM trunk interface module 20 and magnetite interface module 30, one end of Subscriber Interface Module SIM 10 links to each other with telephone wire by relay, its other end links to each other with the control circuit of telephony interface equipment, one end of TIM trunk interface module 20 links to each other with telephone wire by relay, its other end links to each other with the control circuit of telephony interface equipment, one end of magnetite interface module 30 links to each other with telephone wire by relay, its other end links to each other with the control circuit of telephony interface equipment, telephone wire by switch respectively with telephone set, other telephone exchange links to each other with local battery apparatus.

Break-make by control relay can make telephone interface circuit realize different interface functions, as user interface function, trunk interface function or magnetite interface function.The explanation of giving one example, the relay closes that control links to each other with Subscriber Interface Module SIM 10 is controlled other two relays and is disconnected, and makes telephone interface circuit realization user interface function, and telephony interface equipment and telephone set just can be realized communication like this.But, because Subscriber Interface Module SIM 10, TIM trunk interface module 20 and magnetite interface module 30 all are to be provided with separately, and adopt relay to carry out the function switching, make that like this telephone interface circuit volume is big, the cost height.

The utility model content

The purpose of this utility model is to provide a kind of telephone interface circuit, is intended to solve present telephone interface circuit and exists volume big, the problem that cost is high.

The utility model is achieved in that a kind of telephone interface circuit, and described telephone interface circuit comprises:

The switching controls module that links to each other with the control circuit of telephony interface equipment, according to the control signal of described control circuit output, the output switch-over control signal; And

Interface module with described switching controls module is connected with telephone wire makes described interface module realize different interface functions according to described switch-over control signal.

Another purpose of the present utility model is to provide a kind of telephony interface equipment, and the telephone interface circuit of described telephony interface equipment comprises:

In the utility model, the control circuit of telephony interface equipment only needs to send control signal to the switching controls module, interface module just can realize different interface functions, make telephone interface circuit be operated in user interface state, trunk interface state or magnetite Interface status respectively, realize the function that telephony interface equipment is connected arbitrarily by single phone line and telephone set, other telephone exchange and local battery apparatus, it is little that this telephone interface circuit has a volume, the advantage that use cost is low.

Description of drawings

Fig. 1 is the structure chart of existing telephone interface circuit;

Fig. 2 is the structure chart of the telephone interface circuit that provides of the utility model embodiment;

Fig. 3 is the examples of circuits figure of the telephone interface circuit that provides of the utility model embodiment.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Telephony interface equipment comprises telephone interface circuit, and telephone interface circuit is the interface that telephony interface equipment and external equipment carry out communication, and the telephony interface equipment that the utility model embodiment provides is telephone exchange.

Fig. 2 shows the structure of the telephone interface circuit that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model.

The telephone interface circuit that the utility model embodiment provides comprises interface module 100 and switching controls module 200.

Switching controls module 200 links to each other with the control circuit of telephony interface equipment, according to the control signal of control circuit output, and the output switch-over control signal; Interface module 100 is connected with telephone wire with switching controls module 200 respectively, make interface module 100 realize different interface functions according to switch-over control signal, switch to user interface circuit as interface module 100 according to switch-over control signal, trunk interface circuit or magnetite interface circuit, when interface module 100 switches to user interface circuit, when realizing user interface function, telephony interface equipment and telephone set are realized communication, when interface module 100 switches to the trunk interface circuit, when realizing the trunk interface function, telephony interface equipment and other telephone exchange are realized communication, when interface module 100 switches to the magnetite interface circuit, when realizing the magnetite interface function, telephony interface equipment and local battery apparatus are realized communication.

Fig. 3 shows the exemplary circuit structure of the telephone interface circuit that the utility model embodiment provides.

Interface module 100 comprises first electronic switch 101, second electronic switch 102, the 3rd electronic switch 103, quadrielectron switch 104, the 5th electronic switch 105, the first feed bridge 106, the second feed bridge 107, constant-current circuit 108 and fictitious load 109, the T line of one termination telephone wire of first electronic switch 101, the other end of first electronic switch 101 is by the first feed bridge, 106 ground connection, the T line of one termination telephone wire of second electronic switch 102, the other end ground connection of second electronic switch 102, the R line of one termination telephone wire of the 3rd electronic switch 103, the other end of the 3rd electronic switch 103 is by the answer the call T line of line of fictitious load 109, the R line of one termination telephone wire of quadrielectron switch 104, another termination second feed bridge 107 of quadrielectron switch 104, the second feed bridge 107 connects-the 48V power supply by constant-current circuit 108, the R line of one termination telephone wire of the 5th electronic switch 105, another termination ringing-current source of the 5th electronic switch 105.

Switching controls module 200 is connected with the T line of telephone wire, the R line of telephone wire and the control circuit of telephony interface equipment respectively, switching controls module 200 is connected with the 5th electronic switch 105 with first electronic switch 101, second electronic switch 102, the 3rd electronic switch 103, quadrielectron switch 104 respectively by control line, as the utility model one embodiment, switching controls module 200 is a controller, more than first electronic switch 101, second electronic switch 102, the 3rd electronic switch 103, quadrielectron switch 104 and the 5th electronic switch 105 be the high-pressure electronic switch.

The course of work of the telephone interface circuit that the utility model embodiment provides is:

When interface module 100 will realize user interface function, the control circuit of telephony interface equipment sends first via control signal A, the second tunnel control signal B and Third Road control signal C are to switching controls module 200, A=1, B=0, C=0, switching controls module 200 sends switch-over control signal by control line to each electronic switch of interface module 100 respectively, wherein, when first

electronic switch

101 and 104 conductings of quadrielectron switch, other electronic switch all disconnects, interface module 100 realizes user interface function, and be in to the telephone set feed condition, when first

electronic switch

101 and 105 conductings of the 5th electronic switch, other electronic switch all disconnects, interface module 100 realizes user interface functions, and is in to telephone set and sends out the bell state.

When interface module 100 will realize the trunk interface function, the control circuit of telephony interface equipment sends first via control signal A, the second tunnel control signal B and Third Road control signal C are to switching controls module 200, A=0, B=1, C=0, switching controls module 200 sends switch-over control signal by control line to each electronic switch of interface module 100 respectively, wherein, when 103 conductings of the 3rd electronic switch, other electronic switch all disconnects, and interface module 100 realizes the trunk interface function, and be in off hook state, when all electronic switches all disconnect, interface module 100 realizes the trunk interface functions, and is in hook state.

When interface module 100 will realize the magnetite interface function, the control circuit of telephony interface equipment sends first via control signal A, the second tunnel control signal B and Third Road control signal C are to switching controls module 200, A=0, B=0, C=1, switching controls module 200 sends switch-over control signal by control line to each electronic switch of interface module 100 respectively, wherein, when second

electronic switch

102 and 105 conductings of the 5th electronic switch, other electronic switch all disconnects, interface module 100 realizes the magnetite interface function, and be in to local battery apparatus and send out the bell state, when all electronic switches all disconnect, interface module 100 realizes the magnetite interface functions, and is in and the local battery apparatus talking state.

In the utility model embodiment, the control circuit of telephony interface equipment only needs to send control signal to the switching controls module, interface module just can realize different interface functions, make telephone interface circuit be operated in user interface state, trunk interface state or magnetite Interface status respectively, realize the function that telephony interface equipment is connected arbitrarily by single phone line and telephone set, other telephone exchange and local battery apparatus, it is little that this telephone interface circuit has a volume, the advantage that use cost is low.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1, a kind of telephone interface circuit is characterized in that, described telephone interface circuit comprises:

2, telephone interface circuit as claimed in claim 1, it is characterized in that, described interface module comprises first electronic switch, second electronic switch, the 3rd electronic switch, quadrielectron switch, the 5th electronic switch, the first feed bridge, the second feed bridge, constant-current circuit and fictitious load, the T line of the described telephone wire of one termination of described first electronic switch, the other end of described first electronic switch is by the first feed bridge joint ground, the T line of the described telephone wire of one termination of described second electronic switch, the other end ground connection of described second electronic switch, the R line of the described telephone wire of one termination of described the 3rd electronic switch, the other end of described the 3rd electronic switch connects the T line of described telephone wire by fictitious load, the R line of the described telephone wire of one termination of described quadrielectron switch, another termination second feed bridge of described quadrielectron switch, the described second feed bridge connects power supply by constant-current circuit, the R line of the described telephone wire of one termination of described the 5th electronic switch, another termination ringing-current source of described the 5th electronic switch.

3, telephone interface circuit as claimed in claim 2, it is characterized in that, described switching controls module is connected with the T line of described telephone wire, the R line of telephone wire and the control circuit of telephony interface equipment respectively, and described switching controls module is connected with the 5th electronic switch with described first electronic switch, second electronic switch, the 3rd electronic switch, quadrielectron switch respectively by control line.

As claim 1 or 2 or 3 described telephone interface circuits, it is characterized in that 4, described interface module switches to user interface circuit, trunk interface circuit or magnetite interface circuit according to the switch-over control signal of described switching controls module.

As claim 2 or 3 described telephone interface circuits, it is characterized in that 5, described first electronic switch, second electronic switch, the 3rd electronic switch, quadrielectron switch and the 5th electronic switch are the high-pressure electronic switch.

6, a kind of telephony interface equipment, the telephone interface circuit of described telephony interface equipment comprises:

7, telephony interface equipment as claimed in claim 6, it is characterized in that, described interface module comprises first electronic switch, second electronic switch, the 3rd electronic switch, quadrielectron switch, the 5th electronic switch, the first feed bridge, the second feed bridge, constant-current circuit and fictitious load, the T line of the described telephone wire of one termination of described first electronic switch, the other end of described first electronic switch is by the first feed bridge joint ground, the T line of the described telephone wire of one termination of described second electronic switch, the other end ground connection of described second electronic switch, the R line of the described telephone wire of one termination of described the 3rd electronic switch, the other end of described the 3rd electronic switch connects the T line of described telephone wire by fictitious load, the R line of the described telephone wire of one termination of described quadrielectron switch, another termination second feed bridge of described quadrielectron switch, the described second feed bridge connects power supply by constant-current circuit, the R line of the described telephone wire of one termination of described the 5th electronic switch, another termination ringing-current source of described the 5th electronic switch.

8, telephony interface equipment as claimed in claim 7, it is characterized in that, described switching controls module is connected with the T line of described telephone wire, the R line of telephone wire and the control circuit of telephony interface equipment respectively, and described switching controls module is connected with the 5th electronic switch with described first electronic switch, second electronic switch, the 3rd electronic switch, quadrielectron switch respectively by control line.

9, as claim 7 or 8 described telephony interface equipment, it is characterized in that described first electronic switch, second electronic switch, the 3rd electronic switch, quadrielectron switch and the 5th electronic switch are the high-pressure electronic switch.

10, telephony interface equipment as claimed in claim 6 is characterized in that, described telephony interface equipment is telephone exchange.