CN106060028A - Internal and external power network voice communication safety isolation gateway - Google Patents

Internal and external power network voice communication safety isolation gateway Download PDF

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Publication number
CN106060028A
CN106060028A CN201610354455.2A CN201610354455A CN106060028A CN 106060028 A CN106060028 A CN 106060028A CN 201610354455 A CN201610354455 A CN 201610354455A CN 106060028 A CN106060028 A CN 106060028A
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CN
China
Prior art keywords
voice
decoding
electric power
communication
service unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610354455.2A
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Chinese (zh)
Other versions
CN106060028B (en
Inventor
黄秋岑
张明扬
李宏发
刘超颖
陈曦
王川丰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Information and Telecommunication Branch of State Grid Fujian Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Fujian Electric Power Co Ltd
Information and Telecommunication Branch of State Grid Fujian Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Fujian Electric Power Co Ltd, Information and Telecommunication Branch of State Grid Fujian Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201610354455.2A priority Critical patent/CN106060028B/en
Publication of CN106060028A publication Critical patent/CN106060028A/en
Application granted granted Critical
Publication of CN106060028B publication Critical patent/CN106060028B/en
Active legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/70—Media network packetisation

Abstract

The invention relates to an internal and external power network voice communication safety isolation gateway. The gateway comprises a soft switch multimedia communication platform disposed in an internal power network, a voice coding and decoding control unit, a voice coding service unit, a voice decoding service unit and one-way conversation communication control isolation equipment; the voice coding and decoding control unit is used to receive a voice communication request of the soft switch multimedia communication platform and sends the voice communication request to the voice decoding service unit through the one-way conversation communication control isolation equipment; and the voice decoding service unit initiates a voice communication request to external power network voice communication equipment and receives voice network data of an external power network to perform decoding, and the data after decoding are transmitted to the soft switch multimedia communication platform through the voice coding service unit and the voice coding and decoding control unit so that one-way voice safety transmission between the internal and external power networks is achieved. Voice safety isolation communication between the internal and external power networks can be achieved, and effective safety communication supports are provided for various works such as electric power emergency command and work site remote guidance.

Description

A kind of electric power intranet and extranet voice communication security isolation gateway
Technical field
The present invention relates to the outer net voice data transmission device to the security isolation platform of electric power Intranet of power system, special It it not a kind of electric power intranet and extranet voice communication security isolation gateway.
Background technology
Along with Intelligent transformer station, the progressively popularization construction of unattended operation transformer station, improve substation field job safety, Emergency processing means when working site occurs abnormal will be particularly important, at present, and the covering of 3G, 4G network of public network Rate is more and more higher, and what transformer station WiFi built is continuously increased, and is covered in the on-the-spot wireless network of work about electric power more extensive, bandwidth Resource is sufficient, provides the foundation condition for the on-the-spot wireless emergency communication of work about electric power, telework on-the-spot guidance.But, by Higher in the safety of electric power networks, the voice communication how realizing the safety between outer net and Intranet remains a needs solution A difficult problem certainly, by solving this difficult problem, by wireless voice communication means, is introduced to the wireless emergency communication of electric power, long-range work Make in every power generation work such as on-the-spot guidance, significantly more efficient communication technology hands will be provided for power grid security, production run Section.
Summary of the invention
It is an object of the invention to provide a kind of electric power intranet and extranet voice communication security isolation gateway, the language of outer net can be realized Voice communication is realized between the voice communication apparatus of sound communication equipment and electric power Intranet soft switch multimedia communication platform, thus real The voice communication of existing safety between outer net and Intranet, power grid security, production run provide significantly more efficient communication technique.
For achieving the above object, the technical scheme is that a kind of electric power intranet and extranet voice communication security isolation gateway, Including the soft switch multimedia communication platform being deployed in electric power Intranet and the electric power being connected with this soft switch multimedia communication platform Intranet voice communication apparatus, also include encoding and decoding speech control unit, voice coding service unit, tone decoding service unit, One-way coversation Control on Communication xegregating unit, electric power outer net voice communication apparatus；Described encoding and decoding speech control unit is deployed in electricity Power Intranet, for receiving the voice communication request of soft switch multimedia communication platform, and by described one-way coversation Control on Communication Xegregating unit sends to described tone decoding service unit, and tone decoding service unit is initiated to electric power outer net voice communication apparatus Voice communication request, and accept the speech network decoding data of electric power outer net, decoded data are passed by artificial line Transport to described voice coding service unit, then put down to described soft switch multimedia communication by the transmission of encoding and decoding speech control unit Platform, it is achieved the one-way voice safe transmission between electric power intranet and extranet.
In an embodiment of the present invention, described tone decoding service unit realizes receiving IP network voice packet, passes through digital-to-analogue Modular converter, is converted to IP network voice packet analog voice, and uses artificial line to be externally transmitted, can support to decode 32 tunnels Speech data, and exported by analog channel.
In an embodiment of the present invention, described tone decoding service unit uses the proprietary protocol of outer net voice communication terminal Realize the collection to speech data.
In an embodiment of the present invention, described encoding and decoding speech control unit can control single tone decoding service unit Multi-path voice session connection, it is possible to the voice conversation controlling more voice decoding service unit connects, it is possible to control more voice decoding Communication for coordination between service unit, more voice encoding service unit.
In an embodiment of the present invention, described encoding and decoding speech control unit is realized by SIP+SDP agreement, RTP/RTCP Carry out voice conversation communication respectively with voice coding service unit, soft switch multimedia communication platform, use SIP to realize session control System, employing SDP realize conversation media and consult, use RTP/RTCP to realize the mutual of speech data.
In an embodiment of the present invention, described encoding and decoding speech control unit possesses active control function and the monitoring of session Function, user can pass through this service, and ongoing voice call is actively suspended, stops and being monitored, and possesses according to height Priority users mode, the preferential communication authority ensureing high-priority users.
In an embodiment of the present invention, described voice coding service unit is able to receive that tone decoding control unit is exported Analog voice data, and encoded speech data is become the ip voice packet of multiple format.
In an embodiment of the present invention, realized electricity by described voice coding control unit and voice coding service unit The proprietary protocol of power outer net voice communication apparatus is converted to standard agreement, it is achieved and the mark between soft switch multimedia communication platform Quasi-communication.
In an embodiment of the present invention, described electric power Intranet voice communication apparatus, electric power outer net voice communication apparatus all wrap Include multiple stage voice communication terminal.
Compared to prior art, the method have the advantages that (1) can be accessed outside different manufacturers different model Net voice communication apparatus；(2) ensure that the internet security of voice communications channel between system intranet and extranet；(3) system uses SIP+SDP session control protocol and RTP/RTCP media transmission protocol, possess the Protocol Standard parasexuality of voice communication, it is possible to many Communicate between the multimedia communication platform of type；(4) possesses protocol conversion function, it is possible to led to by off-gauge for outer net voice The communication protocol of letter equipment and media data format, be converted to the SIP+SDP session control protocol of standard, RTP/RTCP media biography Transmission protocol and media data format, improve the broad applicability of systems/platforms, it is ensured that the pine between platform is accessed in front end Coupling；(5) extensibility of system includes many aspects: the extensibility of access, the extensibility of power system capacity, system should The aspect such as extensibility；(7) equipment can carry out forwarding to the real time data of request the function of distribution, thus avoids multiplex When family is to data access, relatively greatly headend equipment is caused due to visit capacity bigger pressure.
Accompanying drawing explanation
Fig. 1 be the present invention be block schematic illustration.
Fig. 2 is communication signaling flow chart of the present invention.
Fig. 3 is embodiment of the present invention connection diagram in a particular application.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is specifically described.
A kind of electric power intranet and extranet voice communication security isolation gateway of the present invention, including the soft switch being deployed in electric power Intranet Multimedia communication platform and the electric power Intranet voice communication apparatus being connected with this soft switch multimedia communication platform, also include voice Encoding and decoding control unit, voice coding service unit, tone decoding service unit, one-way coversation Control on Communication xegregating unit, electricity Power outer net voice communication apparatus；Described encoding and decoding speech control unit is deployed in electric power Intranet, is used for receiving soft switch multimedia The voice communication request of communications platform, and sent to described tone decoding clothes by described one-way coversation Control on Communication xegregating unit Business unit, tone decoding service unit is initiated voice communication request to electric power outer net voice communication apparatus, and is accepted electric power outer net Speech network decoding data, by decoded data by artificial line transmission to described voice coding service unit, then By the transmission of encoding and decoding speech control unit to described soft switch multimedia communication platform, it is achieved unidirectional between electric power intranet and extranet Voice safe transmission.
Described tone decoding service unit realizes receiving IP network voice packet, by D/A converter module, by IP network language Sound bag is converted to analog voice, and uses artificial line to be externally transmitted, and can support to decode the speech data on 32 tunnels, and pass through mould Intend passage to export.Described tone decoding service unit uses the proprietary protocol of outer net voice communication terminal to realize voice number According to collection.
Described encoding and decoding speech control unit can control the multi-path voice session connection of single tone decoding service unit, energy The voice conversation enough controlling more voice decoding service unit connects, it is possible to control more voice decoding service unit, more voice coding Communication for coordination between service unit.Described encoding and decoding speech control unit is realized respectively by SIP+SDP agreement, RTP/RTCP Carry out voice conversation communication with voice coding service unit, soft switch multimedia communication platform, use SIP realize session control, Use SDP to realize conversation media to consult, use RTP/RTCP to realize the mutual of speech data.Described encoding and decoding speech control unit Possessing active control function and the monitor function of session, user can pass through this service, to ongoing voice call actively Suspend, stop and monitoring, possess according to high low priority user mode, the preferential communication authority ensureing high-priority users.
Described voice coding service unit is able to receive that the analog voice data that tone decoding control unit is exported, and will Encoded speech data becomes the ip voice packet of multiple format.Service single by described voice coding control unit and voice coding Unit realizes the proprietary protocol of electric power outer net voice communication apparatus is converted to standard agreement, it is achieved put down with soft switch multimedia communication Standard traffic between platform.
Described electric power Intranet voice communication apparatus, electric power outer net voice communication apparatus all include multiple stage voice communication terminal.
It it is below the specific implementation process of the present invention.
A kind of electric power intranet and extranet voice communication security isolation gateway of the present invention, including Intranet equipment and outer net equipment:
Intranet equipment includes: voice communication terminal, soft switch multimedia communication platform, encoding and decoding speech control unit, voice Encoding service unit.
Outer net equipment includes: tone decoding service unit, voice communication terminal.
The intranet and extranet unidirectional communication isolating equipment of communication: one-way coversation Control on Communication xegregating unit.
The Message Processing flow process of the present invention comprises the steps:
Intranet voice communication terminal initiates a session request to soft switch multimedia communication platform, and request message is SIP+SDP, SIP Carrying session control, SDP carries session voice format negotiation.
After soft switch multimedia communication platform receives the SIP request of Intranet voice communication terminal, first send Temporary Response SIP Ringing, to Intranet voice communication terminal, represents and receives conversation request, meanwhile, SIP request is forwarded to voice coder solution Code controls service unit.
Encoding and decoding speech controls after service unit receives SIP request, first by this request by the way of TCP message again Encapsulation messages, is forwarded to one-way coversation Control on Communication xegregating unit, waits the TCP ACK of equipment to be received；Meanwhile, voice coder Decoding controls service unit and SIP request is forwarded to voice coding service unit.
After voice coding service unit receives the SIP request that encoding and decoding speech controls service unit, first respond interim sound SIP Ringing is answered to control service unit to encoding and decoding speech, after SIP request and SDP Context resolution are completed, session negotiation Success, replys 200 OK sip messages and controls service unit to encoding and decoding speech.
After encoding and decoding speech control service unit receives 200 OK sip messages, forward and reply 200 OK sip messages extremely Soft switch multimedia communication platform, further, soft switch multimedia communication platform replys 200 OK sip messages to Intranet voice Communication terminal.
So far, the session negotiation of Intranet completes.
After one-way coversation Control on Communication xegregating unit receives the voice request that encoding and decoding speech controls service unit, by voice Conversation request is sent to tone decoding service unit by Transmission Control Protocol.
Tone decoding service unit is replied unidirectional session communication and is controlled xegregating unit ACK message, and outside converting the request into The interface protocol of net voice communication terminal, sends to outer net voice communication apparatus, in the request receiving outer net voice communication terminal After response, voice conversation has all been set up.
After outer net voice conversation has been set up, voice coding service unit accepts what outer net voice communication terminal sended over Ip voice data, after receiving, are converted to analog voice data by inner decoding unit, and pass through by ip voice media data packet Artificial line sends to electric power Intranet voice coding service unit.
After electric power Intranet voice coding service unit receives analog voice data, by in-line coding unit by analog voice Data, according to session negotiation requirement before, are encoded into the speech-encoded format specified, and by the ip voice number after coding Send to encoding and decoding speech control service unit according to using RTP/RTCP agreement.
Encoding and decoding speech controls service unit, soft switch multimedia communication platform and RTP/RTCP agreement will be used step by step to send Ip voice data be forwarded to the voice communication terminal of Intranet.
By above-mentioned handling process, complete all of communication process flow process.
IP network involved in the present invention includes outer net and electric power Intranet, uses one-way coversation Control on Communication xegregating unit Achieve the one-way safety transmission of communication protocol, use voice coding service unit and tone decoding service unit to achieve voice Data unidirectional Network Isolation safe transmission.
In the present invention, it is preferable that system have employed two kinds of process means and ensure that the network between system intranet and extranet Safety: the voice-over-net data of outer net front end voice communication apparatus are converted to simulation by (1) described tone decoding service unit Speech data, is transmitted by analog data line, is linked into voice coding service unit, it is to avoid direct employing IP network passes Internet security during defeated voice；(2) network security xegregating unit is used to realize the electric power data network one-way data transfer to public network Voice command signaling, it is ensured that the safety of network.
In the present invention, it is preferable that system have employed SIP+SDP session control protocol and RTP/RTCP media transmission protocol, Possess the Protocol Standard parasexuality of voice communication, it is possible to and communicate between eurypalynous multimedia communication platform, it is ensured that system Standard.
In the present invention, it is preferable that encoding and decoding speech control unit possesses active control function and the monitor function of session, use This service can be passed through in family, ongoing voice call is actively suspended, stops and being monitored, possesses and use according to high low priority Family mode, the preferential communication authority ensureing high-priority users.
In the present invention, it is preferable that possess protocol conversion function, it is possible to by the communication of off-gauge for outer net voice communication apparatus Agreement and media data format, be converted to the SIP+SDP session control protocol of standard, RTP/RTCP media transmission protocol and media Data form, improves the broad applicability of systems/platforms, it is ensured that the loose coupling between platform is accessed in front end, uses mark After quasi-safe access gateway, do not affect the properly functioning of original system.
In the present invention, it is preferable that the extensibility of system includes many aspects: the extensibility of access, power system capacity Extensibility, the aspect such as extensibility of system application.
The invention provides a kind of thinking and the method for electric power intranet and extranet voice communication security isolation gateway, implement this The method of technical scheme and approach are a lot, and the above is only the preferred embodiment of the present invention, it is noted that for this technology For the those of ordinary skill in field, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, this A little improvements and modifications also should be regarded as protection scope of the present invention.Each ingredient the clearest and the most definite in the present embodiment all can use existing skill Art is realized.
Being above presently preferred embodiments of the present invention, all changes made according to technical solution of the present invention, produced function is made With during without departing from the scope of technical solution of the present invention, belong to protection scope of the present invention.

Claims (9)

1. an electric power intranet and extranet voice communication security isolation gateway, including the soft switch multimedia communication being deployed in electric power Intranet Platform and the electric power Intranet voice communication apparatus being connected with this soft switch multimedia communication platform, it is characterised in that: also include language Sound encoding and decoding control unit, voice coding service unit, tone decoding service unit, one-way coversation Control on Communication xegregating unit, Electric power outer net voice communication apparatus；Described encoding and decoding speech control unit is deployed in electric power Intranet, is used for receiving the many matchmakers of soft switch The voice communication request of body communication platform, and sent to described tone decoding by described one-way coversation Control on Communication xegregating unit Service unit, tone decoding service unit is initiated voice communication request to electric power outer net voice communication apparatus, and is accepted outside electric power The speech network decoding data of net, by decoded data by artificial line transmission to described voice coding service unit, Again by the transmission of encoding and decoding speech control unit to described soft switch multimedia communication platform, it is achieved the list between electric power intranet and extranet To voice safe transmission.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: institute's predicate Sound decoding service unit realizes receiving IP network voice packet, by D/A converter module, IP network voice packet is converted to simulation Voice, and use artificial line to be externally transmitted, can support to decode the speech data on 32 tunnels, and carry out defeated by analog channel Go out.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: institute's predicate Sound decoding service unit uses the proprietary protocol of outer net voice communication terminal to realize the collection to speech data.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: institute's predicate Sound encoding and decoding control unit can control the multi-path voice session connection of single tone decoding service unit, it is possible to controls more voice solution The voice conversation of code service unit connects, it is possible to control between more voice decoding service unit, more voice encoding service unit Communication for coordination.
5. according to a kind of electric power intranet and extranet voice communication security isolation gateway described in claim 1 or 4, it is characterised in that: institute State encoding and decoding speech control unit by SIP+SDP agreement, RTP/RTCP realize respectively with voice coding service unit, soft switch Multimedia communication platform carries out voice conversation communication, uses SIP to realize session control, use SDP to realize conversation media negotiation, adopt The mutual of speech data is realized with RTP/RTCP.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: institute's predicate Sound encoding and decoding control unit possesses active control function and the monitor function of session, and user can pass through this service, to entering The voice call of row actively suspends, stops and monitoring, and possesses according to high low priority user mode, and preferential guarantee high priority is used The communication authority at family.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: institute's predicate Sound encoding service unit is able to receive that the analog voice data that tone decoding control unit is exported, and is become by encoded speech data The ip voice packet of multiple format.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: by institute Predicate sound coding control unit and voice coding service unit realize the proprietary protocol to electric power outer net voice communication apparatus and change For standard agreement, it is achieved and the standard traffic between soft switch multimedia communication platform.
A kind of electric power intranet and extranet voice communication security isolation gateway the most according to claim 1, it is characterised in that: described electricity Power Intranet voice communication apparatus, electric power outer net voice communication apparatus all include multiple stage voice communication terminal.
CN201610354455.2A 2016-05-26 2016-05-26 A kind of electric power intranet and extranet voice communication security isolation gateway Active CN106060028B (en)

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