CN104243296A - Ethernet-PSTN (Public Switched Telephone Network) gateway - Google Patents
Ethernet-PSTN (Public Switched Telephone Network) gateway Download PDFInfo
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- CN104243296A CN104243296A CN201410545891.9A CN201410545891A CN104243296A CN 104243296 A CN104243296 A CN 104243296A CN 201410545891 A CN201410545891 A CN 201410545891A CN 104243296 A CN104243296 A CN 104243296A
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Abstract
The invention provides an Ethernet-PSTN gateway. The Ethernet-PSTN gateway comprises a DDA (Digital Differential Analyzer) module, an FSK (Frequency Shift Keying) receiving module, an MCU(Micro Controller unit) module and an Ethernet module, wherein the DDA module is used for ringing current detection and output and performing off-hook/on-hook operation according to off-hood/on-hook control signals; the FSK receiving module is used for outputting information after decoding the FSK standard incoming call information; the MCU module is used for detecting the ringing current detection output to confirm an incoming call, converting ringing current signals into ringing information and outputting the information, converting analog call signals from RX line into digital call signals in an A/D mode or converting the digital call signals from TX line into analog call signals in a D/A mode and outputting the signals, extracting incoming call information from the output of the FSK receiving module and outputting the incoming call information, converting dial control information into off-hook/on-hook control signals and DTMF (Dual Tone Multi Frequency) dial signals and outputting the signals; the Ethernet module is used for bearing the incoming call information, the ringing information, the dial control information and the digital call signals. The Ethernet-PSTN gateway focuses on the characteristics of single wire line and China PSTN telephone, relies on a reasonably arranged time control and utilizes a concise design of a single MCU, thereby being low in cost and very convenient and affordable.
Description
Technical field
The present invention relates to a kind of Ethernet-PSTN 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.
Summary of the invention
The present invention 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 Ethernet-PSTN gateway.For this reason, the invention provides following technical scheme:
A kind of Ethernet-PSTN gateway, comprising:
DDA module, for Boll traits and export, according to plucking/on-hook control signal carries out plucking/on-hook operation, telephone line is carried out the conversion of 2-4 line is divided into RX and TX circuit;
FSK receiver module, for exporting after FSK standard incoming information of decoding;
MCU module, determine incoming call for detecting the output of described Boll traits and export after this Boll traits signal is converted to ringing information, convert analog telephone signal to digital telephone signal from described RX circuit A/D or digital telephone signal is exported after described TX circuit D/A is converted to analog telephone signal, incoming information is extracted from described FSK receiver module exports, and described incoming information is exported, and dialing control information is converted to pluck/on-hook control signal and dtmf dialing signal after export;
Ethernet module, for communicating with ethernet terminal, carries described incoming information, ringing information, dialing control information and digital telephone signal with IP datagram.
Technical scheme provided by the invention 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 Ethernet-PSTN 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 embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, 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 Ethernet-PSTN gateway that the specific embodiment of the present invention provides;
Fig. 2 is the structural representation that Ethernet-PSTN gateway that the specific embodiment of the present invention provides is connected with ethernet terminal (smart mobile phone) and PSTN terminal (phone);
Fig. 3 is the workflow schematic diagram of the Ethernet-PSTN gateway that the specific embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
This embodiment provides a kind of Ethernet-PSTN gateway, as shown in Figure 1, comprising:
DDA module, for Boll traits and export, according to plucking/on-hook control signal carries out plucking/on-hook operation, telephone line is carried out the conversion of 2-4 line is divided into RX and TX circuit;
FSK receiver module, for exporting after FSK standard incoming information of decoding;
MCU module, determine incoming call for detecting the output of described Boll traits and export after this Boll traits signal is converted to ringing information, convert analog telephone signal to digital telephone signal from described RX circuit A/D or digital telephone signal is exported after described TX circuit D/A is converted to analog telephone signal, incoming information is extracted from described FSK receiver module exports, and described incoming information is exported, and dialing control information is converted to pluck/on-hook control signal and dtmf dialing signal after export;
Ethernet module, for communicating with ethernet terminal, carries described incoming information, ringing information, dialing control information and digital telephone signal with IP datagram.
The application mode of the Ethernet-PSTN 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, Ethernet-PSTN the 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 Ethernet-PSTN gateway function.Different from PSTN gateway device in the past, Ethernet-PSTN the 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 workflow of the Ethernet-PSTN gateway that this embodiment provides is as shown in Figure 3: 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; 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; 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; 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 is 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, Ethernet-PSTN 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 Ethernet-PSTN 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 Ethernet-PSTN 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 present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (1)
1. an Ethernet-PSTN gateway, is characterized in that, comprising:
DDA module, for Boll traits and export, according to plucking/on-hook control signal carries out plucking/on-hook operation, telephone line is carried out the conversion of 2-4 line is divided into RX and TX circuit;
FSK receiver module, for exporting after FSK standard incoming information of decoding;
MCU module, determine incoming call for detecting the output of described Boll traits and export after this Boll traits signal is converted to ringing information, convert analog telephone signal to digital telephone signal from described RX circuit A/D or digital telephone signal is exported after described TX circuit D/A is converted to analog telephone signal, incoming information is extracted from described FSK receiver module exports, and described incoming information is exported, and dialing control information is converted to pluck/on-hook control signal and dtmf dialing signal after export; Ethernet module, for communicating with ethernet terminal, carries described incoming information, ringing information, dialing control information and digital telephone signal with IP datagram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410545891.9A CN104243296A (en) | 2014-10-15 | 2014-10-15 | Ethernet-PSTN (Public Switched Telephone Network) gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410545891.9A CN104243296A (en) | 2014-10-15 | 2014-10-15 | Ethernet-PSTN (Public Switched Telephone Network) gateway |
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