CN204089863U

CN204089863U - PSTN-Ethernet gateway

Info

Publication number: CN204089863U
Application number: CN201420596753.9U
Authority: CN
Inventors: 梁欣涛; 林文昌; 范清宇; 王苗苗; 侨仲姝; 潘盼
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2014-10-15
Filing date: 2014-10-15
Publication date: 2015-01-07
Anticipated expiration: 2024-10-15

Abstract

The utility model provides a kind of PSTN-ethernet gateway, belongs to communication terminal technology field, comprises DDA module, FSK receiver module, MCU module and ethernet module, the FSK standard incoming information output of described DDA module is connected with the FSK standard incoming information input of described FSK receiver module, the FSK standard incoming information output of described FSK module is connected with the FSK standard incoming information input of described MCU module, the array signal output of described DDA module is connected with the bell signal input of described MCU, the plucking of the plucking of described MCU module/on-hook signal output and described DDA module/on-hook signal input is connected, the TX voice signal output of described DDA module and the TX speech signal input of described MCU module, RX voice and the dtmf dialing signal input part of the RX voice of described MCU and dtmf dialing signal output part and described DDA module are connected, the address of described ethernet module and described MCU module, data and control end connect.The utility model, for single line and Chinese pstn telephone signal characteristic, adopts the compact design of single MCU by reasonable arrangement sequencing control, the low very convenient material benefit of cost.

Description

PSTN-ethernet gateway

Technical field

The utility model relates to a kind of PSTN-ethernet gateway, be specifically related to a kind of fixed network and mobile network merge in terminal fusion device, belong to communication terminal technology field.

Background technology

It is increasingly tight that the facilitation of Modern communications terminals makes intelligent mobile terminal and our daily life contact, but still the wireless signal of Existence dependency operator or Internet just can complete the defect of corresponding communication function to intelligent mobile terminal compared with traditional landline telephone.And the defect that traditional landline telephone cannot install application software also makes landline telephone be difficult to meet consumers' demand.

Development communication technologies was rapid in recent years, and communications industry also presents the scene of a slice prosperity.The abundant development of industry makes competition fiercer.The particularly fast development of mobile communication, has nibbled the market share of fixed network in a large number.In this case, fixed network operator starts to rethink FMC (Fixed-Mobile Convergence, mobile network is merged), wishes the seamless roam realizing between mobile network and fixed network by FMC, encourage user to use fixed network, thus recapture certain market share.Mobile network and fixed network mixed operation business then wish to play cooperative effect by FMC, integrate the resource of two kinds of networks, for user provide more convenient, personalized service more, to attract user.And in the prior art, can not be applicable to the gateway device of FMC, therefore cannot realize fixed network and mobile network merge in terminal merge.

Utility model content

The utility model be solve prior art cannot realize fixed network and mobile network merge in the problem that merges of terminal, and then provide a kind of PSTN-ethernet gateway.For this reason, the utility model provides following technical scheme:

A kind of PSTN-ethernet gateway, comprises DDA module, FSK receiver module and MCU module, the FSK standard incoming information output of described DDA module is connected with the FSK standard incoming information input of described FSK receiver module, the FSK standard incoming information output of described FSK module is connected with the FSK standard incoming information input of described MCU module, the array signal output of described DDA module is connected with the bell signal input of described MCU, the plucking of the plucking of described MCU module/on-hook signal output and described DDA module/on-hook signal input is connected, the TX voice signal output of described DDA module and the TX speech signal input of described MCU module, RX voice and the dtmf dialing signal input part of the RX voice of described MCU and dtmf dialing signal output part and described DDA module are connected, the address of described ethernet module and described MCU module, data and control end connect.

The technical scheme that the utility model provides is by changing analog telephone signal and IP datagram, realize ethernet terminal to use as phone, make ethernet terminal can environmentally handoff functionality, realize pstn telephone function when IP phone under Internet condition and PSTN-ethernet gateway respectively, and not only make use of existing ethernet terminal when using as pstn telephone and reduce cost but also experience easily can be provided for fixed telephone subscriber, expand the using forestland of fixed line, made fixed line more press close to people's use habit now.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of the PSTN-ethernet gateway that embodiment of the present utility model provides;

Fig. 2 is the structural representation that PSTN-ethernet gateway that embodiment of the present utility model provides is connected with ethernet terminal (smart mobile phone) and PSTN terminal (phone);

Fig. 3 is the electrical block diagram of the MCU module that embodiment of the present utility model provides;

Fig. 4 is the electrical block diagram of the FSK receiver module that embodiment of the present utility model provides;

Fig. 5 is the electrical block diagram of the ethernet module that embodiment of the present utility model provides;

Fig. 6 is the electrical block diagram of the DDA module that embodiment of the present utility model provides.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

This embodiment provides a kind of PSTN-ethernet gateway, as shown in Figure 1, comprises DDA module, FSK receiver module, MCU module and ethernet module, the FSK standard incoming information output of described DDA module is connected with the FSK standard incoming information input of described FSK receiver module, the FSK standard incoming information output of described FSK module is connected with the FSK standard incoming information input of described MCU module, the array signal output of described DDA module is connected with the bell signal input of described MCU, the plucking of the plucking of described MCU module/on-hook signal output and described DDA module/on-hook signal input is connected, the TX voice signal output of described DDA module and the TX speech signal input of described MCU module, RX voice and the dtmf dialing signal input part of the RX voice of described MCU and dtmf dialing signal output part and described DDA module are connected, the address of described ethernet module and described MCU module, data and control end connect.

The application mode of the PSTN-ethernet gateway that this embodiment provides as shown in Figure 2, when the external world has phone to squeeze into, ethernet module is connected by the ethernet terminal such as IP datagram and mobile phone, and by this connection, the incoming information obtained from FSK receiver module being sent to ethernet terminal, user selects to converse and namely in this connection of having set up, realizes communication; In communication process, transmit telephone signal in Ethernet side with IP datagram form, transmit telephone signal at fixation phone line trackside with analog signal form; When ethernet end-user needs to call, use and also can realize communicating with the reverse flow process shown in Fig. 2.

Compare prior art, the PSTN-ethernet gateway that this embodiment provides adopts single MCU module to be combined with DDA module, by MCU module self modulus, digital to analog conversion communicate with ethernet module and realize the bi-directional conversion of analog telephone signal and IP datagram, and then realize PSTN-ethernet gateway function.Different from PSTN gateway device in the past, the PSTN-ethernet gateway that this embodiment provides is by rational sequential and interrupt controlling and adopt simplified design for single line phone and Chinese pstn telephone signal characteristic, allows single MCU module not only as controller but also as the signal processor of A/D, D/A and ethernet communication.FSK caller identification (Chinese pstn telephone incoming information mainly FSK), dtmf dialing (synthesizing dtmf signal by the D/A of MCU) can be realized, pluck/the function such as on-hook, voice call.

The operation principle of the PSTN-ethernet gateway that this embodiment provides comprises: as shown in Figure 3, MCU module can adopt C5051F120 chip, when there being incoming call to enter this DDA module, MCU module extracts ringing pulse signal from the incoming telephone signal that DDA module exports; As shown in Figure 4, FSK module can adopt HT9032D chip, and FSK receiver module extracts and changes incoming information and sends to MCU module from the incoming telephone signal that DDA module exports; Incoming information and ringing pulse signal can be sent to ethernet terminal by ethernet module with the form of IP datagram by MCU module; As shown in Figure 5, ethernet module can adopt CP2200 chip, and ethernet terminal plucks the/control information such as on-hook or dialing by Ethernet to MCU module transmission; MCU module can control DDA module pluck/hook state; As shown in Figure 6, DDA module can adopt CPC5622 chip, and after DDA module enters off hook state, MCU module can carry out A/D, D/A conversion by RX, TX circuit of DDA module, analog telephone signal and digital telephone signal are carried out bi-directional conversion, and then realizes voice communication; MCU module controls to send this A/D by ethernet module with IP datagram form and converts the digital telephone signal obtained, and the digital telephone signal received from this ethernet module is transformed to analog telephone signal through D/A; Digital signal is by being sent to ethernet terminal correlation module after the process of IP phone software; Described in communication process, PSTN-ethernet gateway completes ethernet terminal and the two-way signal conversion of landline telephone in real time, thus realizes the PSTN function of this ethernet terminal.Corresponding ethernet terminal can use as pstn telephone in the environment of described PSTN-ethernet gateway, do not need to use common mobile phone signal or Internet, thus switch above-mentioned three kinds of circuits and number thereof easily, make the convenient unification of the management of contact person.

Adopt the technical scheme that this embodiment provides, by changing analog telephone signal and IP datagram, realize ethernet terminal to use as phone, make ethernet terminal can environmentally handoff functionality, realize pstn telephone function when IP phone under Internet condition and PSTN-ethernet gateway respectively, and not only make use of existing ethernet terminal when using as pstn telephone and reduce cost but also experience easily can be provided for fixed telephone subscriber, expand the using forestland of fixed line, fixed line is made more to press close to the use habit of people.

The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model embodiment discloses; the change that can expect easily or replacement, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.

Claims

1. a PSTN-ethernet gateway, is characterized in that, comprises DDA module, FSK receiver module, MCU module and ethernet module, the FSK standard incoming information output of described DDA module is connected with the FSK standard incoming information input of described FSK receiver module, the FSK standard incoming information output of described FSK module is connected with the FSK standard incoming information input of described MCU module, the array signal output of described DDA module is connected with the bell signal input of described MCU, the plucking of the plucking of described MCU module/on-hook signal output and described DDA module/on-hook signal input is connected, the TX voice signal output of described DDA module and the TX speech signal input of described MCU module, RX voice and the dtmf dialing signal input part of the RX voice of described MCU and dtmf dialing signal output part and described DDA module are connected, the address of described ethernet module and described MCU module, data and control end connect.