CN106603984A - Server-free dialing algorithm under visual intercommunication local area network environment - Google Patents

Server-free dialing algorithm under visual intercommunication local area network environment Download PDF

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Publication number
CN106603984A
CN106603984A CN201611200132.4A CN201611200132A CN106603984A CN 106603984 A CN106603984 A CN 106603984A CN 201611200132 A CN201611200132 A CN 201611200132A CN 106603984 A CN106603984 A CN 106603984A
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China
Prior art keywords
dialing
mode
server
tcp
sip
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Granted
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CN201611200132.4A
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Chinese (zh)
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CN106603984B (en
Inventor
李政沆
于晓亮
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SHENZHEN EISEN VAIL TECHNOLOGY Co Ltd
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SHENZHEN EISEN VAIL TECHNOLOGY Co Ltd
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Priority to CN201611200132.4A priority Critical patent/CN106603984B/en
Publication of CN106603984A publication Critical patent/CN106603984A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • H04N7/186—Video door telephones
    • 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
    • H04L65/1069—Session establishment or de-establishment
    • 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
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention discloses a server-free dialing algorithm under a visual intercommunication local area network environment; more than one visual intercommunication outdoor unit, a wireless router, more than one mobile phone and more than one visual intercommunication indoor unit can form a visible dialogue system; if all terminals are in a same LAN environment, dialing dialogue can be realized between the terminals without changing a dialing mode and using the server; in dialing, the system can automatically select a server dialing mode or a server-free dialing mode. The communication algorithm using TCP and small amount of multicast can allow conversational both parties to realize dialing dialogue under the same LAN without using a server and changing the dialing mode; the multicast and TCP mixed communication mode can maximumly prevent communication packet loss problems caused by using only the multicast mode; in dialing, the system can automatically identify the LAN and an external network environment, thus automatically selecting the optical mode for dialing.

Description

A kind of algorithm that serverless backup dialing is carried out under video intercom LAN environment
Technical field
The present invention relates to computer realm, and in particular to one kind carries out serverless backup under video intercom LAN environment and dials Number algorithm.
Background technology
Video intercom has self-defining communication protocol based on TCP/IP, this kind of video intercom, also has s ip etc. famous Communication protocol, no matter using what communication protocol, visible dialogue system is generally provided with server to manage account, number simultaneously Call terminal is assisted to carry out audio/video flow transmission.In the case where communicating without server or server, call terminal energy It is enough to be dialled by manually entering ip addresses, but do so is difficult to know and remember the ip addresses of other side, not to mention have A little terminals ip addresses of starting shooting every time all can change.
Can there is shortcoming described below in above-mentioned visible dialogue system：
First, dialing intercommunication cannot be carried out by number in the case of without server；
2nd, other side ip addresses can be obtained by specific process, then dialing intercommunication is carried out with ip addresses, but this method is not General, sometimes other side ip addresses are changes；
3rd, with pure multicast mode dynamic access other party number, then dialing intercommunication is carried out with ip addresses, cast communication is adopted UDP modes, UDP communication modes have certain packet loss in communication environments such as WIFI, so as to cause dialing failure.
The content of the invention
The technical problem to be solved is to provide one kind by server, adopts TCP in LAN and coordinates The communication mode of a small amount of multicast is by the algorithm that dialing intercommunication is carried out between terminal.
The present invention is achieved through the following technical solutions：One kind is carried out without service under video intercom LAN environment The algorithm of device dialing, by the video intercom off-premises station of more than, wireless router, the mobile phone of more than and more than one Visual intercommunicating indoor set composition visible dialogue system；
If all terminals are in same LAN environment, then not by server, dial mode is constant, between terminal Dialing intercommunication can be carried out, during dialing, system automatically selects the dial mode with or without server, and sip phone loops are described below The implementation method and step of program under border：
(1) a particular port is monitored with tcp services when dialing party starts, is sent with specific multicast mode during dialing and is connect The sip numbers of the side of listening and the ip address informations of itself；
(2) all sides of answering add in advance specific multicast, be received in compliance with the side of answering of the number itself ip address with Response to dialing party, the side of answering gets dialing party to sip listening ports information tcp modes in the cast communication for starting Tcp information on services；
(3) dialing party builds special sip numbers, such as " sip in tcp services with the ip addresses and port numbers that receive: 192.168.1.111:5060；
(4) local dialing, the similar routine dial mode of subsequent process are carried out with above-mentioned number；
(5) when dialling, internal system first attempts to use serverless backup mode, makes again when certain time-out cannot dial With there is server dial mode.
The invention has the beneficial effects as follows：By the present invention in that with TCP and coordinating the communication of algorithms of a small amount of multicast, solve following Problem：
(1) in the case of without server, both call sides can also carry out dialing intercommunication, and dialing party under LAN Formula constant (without being input into ip addresses)；
(2) with multicast and TCP mixed communication modes, avoid to greatest extent all with the communication packet loss problem of multicast mode；
(3) when dialling, system automatic identification LAN, outer network environment are dialled from optimum way automatically.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the system diagram of the present invention.
Specific embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically is chatted State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature It is an example in a series of equivalent or similar characteristics.
As shown in figure 1, mobile phone, visual intercommunicating indoor set, video intercom off-premises station are all the call ends of visible dialogue system End.If all terminals are in same LAN environment, then not by server, dial mode is constant (without manually inputting ip Address), dialing intercommunication can also be carried out between terminal, during dialing, system automatically selects the dial mode with or without server, under Face describes the implementation method and step of program under sip telephony environments：
A particular port is monitored with tcp services when dialing party starts, the side of answering is sent with specific multicast mode during dialing Sip numbers and the ip address informations of itself, the prior addition specific multicast in all sides of answering, be received in compliance with the side of answering of the number Itself ip address and sip listening ports information, with tcp modes, response to dialing party, (side of answering is in the cast communication for starting Get dialing party tcp information on services), dialing party builds special sip in tcp services with the ip addresses and port numbers that receive Number (such as " sip:192.168.1.111:5060 "), local dialing is then carried out with this number, subsequent process is similar conventional to be dialled Number mode.
During dialing, internal system is first attempted using serverless backup mode, and when certain time-out cannot dial clothes have been reused Business device dial mode.
The invention has the beneficial effects as follows：By the present invention in that with TCP and coordinate the communication of algorithms of a small amount of multicast, without clothes In the case of business device, both call sides can also carry out dialing intercommunication under LAN, and dial mode is constant；
With multicast and TCP mixed communication modes, avoid to greatest extent all with the communication packet loss problem of multicast mode, dialing When, system automatic identification LAN, outer network environment are dialled from optimum way automatically.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any The change or replacement expected without creative work, all should be included within the scope of the present invention.Therefore, it is of the invention The protection domain that protection domain should be limited by claims is defined.

Claims (1)

1. a kind of algorithm that serverless backup dialing is carried out under video intercom LAN environment, it is characterised in that：By more than one Video intercom off-premises station, wireless router, the visual intercommunicating indoor set composition of the mobile phone of more than and more than Visible dialogue system；
If all terminals are in same LAN environment, then not by server, dial mode is constant, can also between terminal Dialing intercommunication is carried out, during dialing, system automatically selects the dial mode with or without server, under sip telephony environments are described below The implementation method and step of program：
(1) particular port is monitored with tcp services when dialing party starts, the side of answering is sent with specific multicast mode during dialing Sip numbers and the ip address informations of itself；
(2) all sides of answering add in advance specific multicast, and itself ip address and sip are supervised by the side of answering for being received in compliance with the number Listen port number information tcp mode response to dialing party, the side of answering gets dialing party tcp services in the cast communication for starting Information；
(3) dialing party builds special sip numbers, such as " sip in tcp services with the ip addresses and port numbers that receive: 192.168.1.111:5060；
(4) local dialing, the similar routine dial mode of subsequent process are carried out with above-mentioned number；
(5) when dialling, internal system first attempts to use serverless backup mode, has reused when certain time-out cannot dial Server dial mode.
CN201611200132.4A 2016-12-22 2016-12-22 A method of carrying out serverless backup dialing under video intercom LAN environment Active CN106603984B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611200132.4A CN106603984B (en) 2016-12-22 2016-12-22 A method of carrying out serverless backup dialing under video intercom LAN environment

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Application Number Priority Date Filing Date Title
CN201611200132.4A CN106603984B (en) 2016-12-22 2016-12-22 A method of carrying out serverless backup dialing under video intercom LAN environment

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CN106603984B CN106603984B (en) 2019-06-14

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