CN209731293U - A kind of VOIP voice terminal suitable for power distribution network O&M - Google Patents
A kind of VOIP voice terminal suitable for power distribution network O&M Download PDFInfo
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- CN209731293U CN209731293U CN201920705749.4U CN201920705749U CN209731293U CN 209731293 U CN209731293 U CN 209731293U CN 201920705749 U CN201920705749 U CN 201920705749U CN 209731293 U CN209731293 U CN 209731293U
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Abstract
The utility model discloses a kind of VOIP voice terminals suitable for power distribution network O&M, including subscriber line interface circuit module and central battery telephone apparatus, subscriber line interface circuit module to be connected with microprocessor module, and instruction interaction is carried out between microprocessor module；It further include touch-tone signal module, the first sound card module and the second sound card module；First sound card module receives original sound signal and carries out stereo process；VOIP phone data are stored as the audio file of reference format by the second sound card module；Microprocessor module is used to receive and store the VOIP IP telephone numbers book that management platform issues, and determines the connection relationship between local terminal and other terminals, realizes voice data transmission by network transmission module.The utility model can reduce communications cost, and encoding and decoding, Compress softwares and the automatic recording of voice data are realized using alliteration card, provide and the interfaces such as the other operation system information exchanges of power distribution network, low in cost, integrated services degree height.
Description
Technical field
The present invention relates to a kind of VOIP voice terminals, more specifically to a kind of VOIP suitable for power distribution network O&M
Voice terminal.
Background technique
With the deep development for writing smart grid, urban construction, the extensive construction of unattended distribution station, for being set in station
The power distribution networks O&M such as standby tour, maintenance, operation safety proposes requirements at the higher level.Urban public area is occupied to reduce, it is some
10KV distribution station build basement in, is not only fitted without fixed-line telephone, but also do not have mobile phone signal, patrol officer can not open scene
Closing folding position and power distribution automation recording status, this is to finding the problem in time, when the breaking-closing operating being even more important, scene work
Industry personnel can not be with the timely communication exchange in control centre, and there are security risks.
The VOIP networking telephone is a kind of idea and method to solve the above problems.VOIP(Voice Over IP and
VOIP Protocols), that is, refer to and transmits voice in a manner of data packet using IP agreement on ip networks.Using VOIP agreement,
Either internet, enterprises Internet or local area network can realize voice communication.One uses in the network of VOIP,
Voice signal compresses and is converted into IP packet by digitlization, then transmitted in an ip network.VOIP signaling protocol is used for
Calling is established and cancelled, is transmitted for information needed for positioning user and negotiation ability.
The voice transmitting-receiving process of VOIP voice terminal is: then reception analog voice signal first carries out A/D conversion, language
Sound compressed encoding is finally transferred on network after being packaged encapsulation；In receiving end, VOIP voice terminal receives transmission over networks
Analog voice signal is supplied to user after decapsulation, speech decompression decoding and D/A conversion by the data packet come.
This is higher for the general usual price of VOIP terminal, while grid company is forbidden interior from the point of view of information security
Net equipment accesses outer net VOIP gateway, need to purchase Intranet VOIP gateway, since distribution station quantity is big, it is fast to increase, causes to build
Entire VOIP system cost is higher；Some particular/special requirements of power distribution network O&M, as power distribution station runs the operation monitoring system of rehearsing, it is desirable that
Breaking-closing operating process automatic recording is in case retrospect；Some distribution station network bandwidths are low；Many VOIP system interface openness
Not enough, difficult integrated with the other operation systems of power distribution network.
Summary of the invention
The present invention to solve the above-mentioned problems, provides a kind of VOIP voice terminal suitable for power distribution network O&M, to realize
Power distribution network O&M VOIP voice terminal at low cost, integrated services degree is high.
In order to achieve the above object, the present invention provides a kind of VOIP voice terminals suitable for power distribution network O&M, including
Subscriber line interface circuit module, the subscriber line interface circuit module are connected by user's line with central battery telephone apparatus, and to
The central battery telephone apparatus power supply and transmitting signal；The subscriber line interface circuit module is connected with microprocessor module, and with
Instruction interaction is carried out between the microprocessor module.
Touch-tone signal module is also set up between the central battery telephone apparatus and the microprocessor module, the double-tone is more
Frequency signaling module is exported for the dialed number of the central battery telephone apparatus to be acquired and encoded to the microprocessor mould
Block.
The subscriber line interface circuit module is connected with the first sound card module and the second sound card module respectively.
First sound card module is connected by communication by the first McASP interface with the microprocessor module, and described first
Sound card module receives the original sound signal that the subscriber line interface circuit module is sent and carries out stereo process, receiving
Analoging sound signal be converted into digital audio and video signals and be conveyed to the microprocessor module；Meanwhile first sound card module
The digital audio and video signals that the microprocessor module is sent are received to be reduced into analoging sound signal and be sent to the subscribers' line
Interface module.
Second sound card module is connected by communication by the 2nd McASP interface with the microprocessor module, and described second
VOIP phone data are stored as the sound of reference format by the sound card module instruction that the microprocessor module is sent based on the received
Frequency file.
The microprocessor module is connected with network transmission module, and the microprocessor module is for receiving and storing management
The VOIP IP telephone numbers book that platform issues determines that the connection between local terminal and other terminals is closed by lookup table mode
System, and voice data transmission is realized by the network transmission module.
A kind of above-mentioned VOIP voice terminal suitable for power distribution network O&M, under preferred embodiment, the VOIP networking telephone number
Codebook includes site number, telephone number, IP address, serve port.
A kind of above-mentioned VOIP voice terminal suitable for power distribution network O&M, under preferred embodiment, first sound card module and
Second sound card module is the serial codec of mixed signal.
The present invention can be realized between distribution station and with control centre, safety supervision department SIP software terminal without acting on behalf of mould
Formula voice communication, can reduce communications cost, and encoding and decoding, Compress softwares and the automatic record of voice data are realized using alliteration card
Sound provides and the interfaces such as the other operation system information exchanges of power distribution network, low in cost, integrated services degree height.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is VOIP interaction process flow chart of the invention.
In figure, 1, subscriber line interface circuit module, 2, central battery telephone apparatus, 3, microprocessor module, 4, dual-tone multifrequency letter
Number module, 5a, the first sound card module, 5b, the second sound card module, 6, network transmission module.
Specific embodiment
As shown in Figure 1, a kind of VOIP voice terminal suitable for power distribution network O&M of the present invention, including subscriber line interface electricity
Road module 1, the subscriber line interface circuit module 1 are connected by user's line with central battery telephone apparatus 2, and are talked about to the common battery type
The power supply of machine 2 and transmitting signal；The subscriber line interface circuit module 1 is connected with microprocessor module 3, and with the micro process
Instruction interaction is carried out between device module 3.
Touch-tone signal module 4 is also set up between the central battery telephone apparatus 2 and the microprocessor module 3, it is described double
Sound multiple-frequency signal module 4 is exported for the dialed number of the central battery telephone apparatus 2 to be acquired and encoded to micro- place
Manage device module 3.
The subscriber line interface circuit module 1 is connected with the first sound card module 5a and the second sound card module 5b respectively.
The first sound card module 5a is connected by communication by the first McASP interface with the microprocessor module 3, and described the
One sound card module 5a receives the original sound signal that the subscriber line interface circuit module 1 is sent and carries out stereo process,
The analoging sound signal received is converted into digital audio and video signals and is conveyed to the microprocessor module 3；Meanwhile first sound
Card module 5a receives the digital audio and video signals that the microprocessor module 3 is sent and is reduced into analoging sound signal and is sent to described
Subscriber line interface circuit module 1.
The second sound card module 5b is connected by communication by the 2nd McASP interface with the microprocessor module 3, and described the
VOIP communicating data is stored as reticle by the two sound card module 5b instruction that the microprocessor module 3 is sent based on the received
The audio file of formula.The first sound card module 5a and the second sound card module 5b is the serial codec of mixed signal.
The microprocessor module 3 is connected with network transmission module 6, and the microprocessor module 3 is for receiving and storing
The VOIP IP telephone numbers book that management platform issues, determines the connection between local terminal and other terminals by lookup table mode
Relationship, and voice data transmission is realized by the network transmission module 6.The VOIP IP telephone numbers book includes that website is compiled
Number, telephone number, IP address, serve port.
Session Initiation Protocol is one of core of this system.SIP is the agreement based on request-response mode, is used
It is related to modification in the control of calling, including call establishment, maintenance and termination, and according to call progress situation dynamic adjustment
Attribute.The relevant operation of Session Initiation Protocol includes: the sending and receiving of sip message, the generation of message and analysis, the preservation of state machine
At conversion, the management of SIP dialog, the operation of SIP transaction processing facility, the construction of SDP message, parsing and both sides' media negotiation
The functions such as the registration of reason and terminal.
A kind of VOIP voice terminal suitable for power distribution network O&M of the present invention, hardware elementary diagram is as shown in Figure 1, VOIP language
Voice terminal include: external analog station (RJ11) interface and the DTMF module positioned at terminal inner of the present invention, SLIC module,
Two sound card modules, MCU module and embedded software, RJ45 module and relevant accessory circuit.
Wherein, DTMF module is touch-tone signal module 4, and SLIC module is subscriber line interface circuit module 1, two
A sound card module is respectively the first sound card module 5a and the second sound card module 5b, and MCU module is microprocessor module 3, RJ45 mould
Block is network transmission module 6.
Subscriber line interface circuit module 1 completes following function using KS0835F module: by user's line to common battery type
2 DC feedback of phone prevents the voltge surge or over-voltage on user's line and damages the overvoltage protection of terminal, to called subscriber's phone
Ringing current is fed, by the off-hook of scanning element detection phone, on-hook, the subscriber line signals such as dial impulse are simultaneously exported to micro process
Device module 3.
Touch-tone signal module 4 realizes acquisition and the coding of analog station dialed number using MT8870 module, and defeated
Out to microprocessor module 3.
Two sound card (Audio Codec) modules, are all made of TLV320AIC3101 chipset, are to meet AC ' 97
The serial codec of mixed signal of (Audio Codec ' 97) specification, MCU AM335X, that is, microprocessor module 3 pass through 2
MCASP interface is interacted with 2 sound cards respectively, and McASP is a kind of access interface of the DSP of American TI Company.Referred to as answer channel sound
Frequency access interface.This is a kind of general audio access interface.
First sound card module 5a is responsible for the pulse code modulation (PCM) to original sound signal, and pulse code modulation is
Received analoging sound signal, is converted into digital signal, using selected coding standard by a kind of mode for sampling stereo process
(G.729a) compressed encoding is carried out to digital signal, it is undistorted that 64Kbps audio digital signals are compressed to 8Kbps, to adapt to one
The relatively low situation of a little distribution station network bandwidths；Also received digital audio and video signals will be passed through by decompression, then decoded
Signal demodulation is reduced into analog signal.
Second sound card module 5b receives the instruction of microprocessor module 3, is responsible for VOIP phone data being stored as reference format
Audio file it is for future reference.
Microprocessor module 3 uses TI AM335X industry level processor, and operating system is built-in Linux 2.6, is responsible for
Receive and store VOIP IP telephone numbers thin (site number, telephone number, IP address, server-side that management platform issues
Mouthful), realize that local terminal is connect with other terminal rooms without VOIP gateway proxy mode by lookup table mode；Microprocessor simultaneously
Module 3 is responsible for the control that voice communication course is realized in the parsing of SIP soft switch control protocol；By RTP media transport technology, realize
The reliable transmission of voice data；Management and the upload service interface of VOIP recording file are provided, realized and the other systems of power distribution network
Data exchange and business cooperation.
Network transmission module 6 is responsible for receiving the instruction of microprocessor module 3, to the control instruction and voice data of VOIP
Carry out reliable transmission.
The present invention follows Session Initiation Protocol, for the control of calling, including call establishment, maintenance and termination, the creation of call
It is as shown in Figure 2 with speech processes process.
The voice transmitting-receiving process of VO ip voice terminal is: the microprocessor module 3 of calling party passes through subscriber line interface electricity
Road module 1 detects user's off hook signal, obtains dialed number coding by touch-tone signal module 4, passes through inquiry network electricity
Words directory obtains callee's IP address and voice port, it then follows and Session Initiation Protocol creation call connection receives analog voice signal,
Then the first sound card module 5a carries out modulus (A/D) conversion, voice compression coding, finally beats voice data according to Real-time Transport Protocol
It is transferred on network after encapsulation.
In receiving end, VOIP voice terminal receives the data packet that transmission over networks is come, by decapsulation, speech decompression solution
After code and digital-to-analogue (D/A) conversion, analog voice signal is supplied to user.It is complete by the second sound card module 5b in communication process
Cheng Luyin formation audio file is for future reference, and both terminal monitors user's on-hook signal by subscriber line interface circuit module 1 at any time,
Terminate call process.
The present invention follows SIP signaling and Softswitch technology, utilizes DTMF technology, SLIC technology, alliteration card audio coding decoding
Technology, RTCP transmission and control technology, realize distribution station between and the nothing with control centre, safety supervision department SIP software terminal
Proxy mode voice communication realizes encoding and decoding, Compress softwares and the automatic record of voice data using alliteration card to reduce cost
Sound provides and the interfaces such as the other operation system information exchanges of power distribution network, low in cost, integrated services degree height.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of VOIP voice terminal suitable for power distribution network O&M, which is characterized in that including subscriber line interface circuit module
(1), the subscriber line interface circuit module (1) is connected by user's line with central battery telephone apparatus (2), and is talked about to the common battery type
Machine (2) power supply and transmitting signal；The subscriber line interface circuit module (1) is connected with microprocessor module (3), and with it is described
Microprocessor module carries out instruction interaction between (3)；
It is also set up between the central battery telephone apparatus (2) and the microprocessor module (3) touch-tone signal module (4), it is described
Touch-tone signal module (4) is exported for the dialed number of the central battery telephone apparatus (2) to be acquired and encoded to institute
State microprocessor module (3)；
The subscriber line interface circuit module (1) is connected with the first sound card module (5a) and the second sound card module (5b) respectively；
First sound card module (5a) is connected by communication by the first McASP interface with the microprocessor module (3), and described the
One sound card module (5a) receives the original sound signal that the subscriber line interface circuit module (1) sends and carries out at audio mixing
The analoging sound signal received, is converted into digital audio and video signals and is conveyed to the microprocessor module (3) by reason；Meanwhile institute
It states the digital audio and video signals that the first sound card module (5a) reception microprocessor module (3) sends and is reduced into analoging sound signal
And it is sent to the subscriber line interface circuit module (1)；
Second sound card module (5b) is connected by communication by the 2nd McASP interface with the microprocessor module (3), and described the
VOIP phone data are stored as standard by two sound card modules (5b) instruction that the microprocessor module (3) sends based on the received
The audio file of format；
The microprocessor module (3) is connected with network transmission module (6), and the microprocessor module (3) is for receiving and depositing
The VOIP IP telephone numbers book that storage management platform issues, determines the company between local terminal and other terminals by lookup table mode
Relationship is connect, and realizes voice data transmission by the network transmission module (6).
2. a kind of VOIP voice terminal suitable for power distribution network O&M according to claim 1, which is characterized in that the VOIP
IP telephone numbers book includes site number, telephone number, IP address, serve port.
3. a kind of VOIP voice terminal suitable for power distribution network O&M according to claim 1, which is characterized in that described first
Sound card module (5a) and second sound card module (5b) are the serial codec of mixed signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920705749.4U CN209731293U (en) | 2019-05-15 | 2019-05-15 | A kind of VOIP voice terminal suitable for power distribution network O&M |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920705749.4U CN209731293U (en) | 2019-05-15 | 2019-05-15 | A kind of VOIP voice terminal suitable for power distribution network O&M |
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| CN209731293U true CN209731293U (en) | 2019-12-03 |
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| CN201920705749.4U Active CN209731293U (en) | 2019-05-15 | 2019-05-15 | A kind of VOIP voice terminal suitable for power distribution network O&M |
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