CN101262528B - A multi-gateway backup method for voice access of network call - Google Patents

A multi-gateway backup method for voice access of network call Download PDF

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CN101262528B
CN101262528B CN2008100062055A CN200810006205A CN101262528B CN 101262528 B CN101262528 B CN 101262528B CN 2008100062055 A CN2008100062055 A CN 2008100062055A CN 200810006205 A CN200810006205 A CN 200810006205A CN 101262528 B CN101262528 B CN 101262528B
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voice
voice gateway
gateway
source
address
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CN101262528A (en
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陈云
王萌
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a multi gateway back-up method for VoIP voice access, which comprises: the numbers of destination IP audio gateways configured under dial-peer (dial-peer) are increased and different priorities are assigned to a plurality of destination IP audio gateways. The invention realizes the back-up among the audio gateways by the method, ensures the normal establishment of the VoIP voice calls when the main destination IP audio gateway has faults or cannot be connected; .moreover, the method of the invention ensures that voice access services can be provided again after the recovery of the main destination IP audio gateway, thus ensuring the orderliness and flexibilities of the network.

Description

The multi-gateway backup method that a kind of networking telephone voice insert
Technical field
The present invention relates to VoIP (voice over IP network, the networking telephone) speech communication field, relate in particular to the multiple gateway redundancy technique that the VoIP voice insert.
Background technology
VoIP is (Voice Over IP network, the networking telephone) abbreviation, our daily said IP phone is exactly typical case's application of VoIP, and the application of VoIP on router makes speech business to carry by IP network, as traditional telephone service.VoIP realizes that by packets of voice in VoIP, digital signal processor (DSP, Digital Signal Processor) encapsulates framing with voice signal and is stored in the grouping bag and transmits.VoIP mainly is a kind of software solution, but need install voice interface card additional on router or voice module provides speech interface to realize.
It is that the technology of IP message is increasingly mature and practical that technological accumulation in the past few years makes speech conversion, integrated circuit (IC, Integrated Circuit) high speed development of technology makes that the core parts of IP phone---the price of digital processing unit descends significantly, and this all provides technical possibility for the popularization of IP phone.The driving of market interest also is the major reason that IP phone develops rapidly.Utilize the voip network that equipment such as ip voice gateway is set up toll telephone can be switched on the data network, thereby save a large amount of long-distance telephone expenses expenses, for the user brings benefit.IP phone developed into now from the beginning of the nineties, enter into ip voice gateway period period by IP phone software, and present voip technology uses also PC (home computer) product from simply having voice service, develop into have multi-service, high reliability and the better telecommunication service of meeting speech, fax and the data transport functions of service quality.At present, mainly utilize the ip voice gateway to realize PSTN (Public Switched Telephone Network, PSTN) and the Internet intercommunication, simultaneously PC to phone, phone to PC, phone is to the technology of phone maturation, the quality of speech also improves greatly.
Be used to realize that the interconnected implementation method of VoIP voice mainly is by dispose dial-peer (Dial-Peer) on voice gateways on the router voice gateways at present, under dial-peer, dispose the IP address of the voice gateways of specific destination Mobile Station International ISDN Number office direction (set that some have the telephone number of same characteristic features is similar to the area code in the traditional voice system) and these office directions of management then; When certain ip voice gateway receives call request, can set up voip call with the corresponding relation of address with the purpose voice gateway router after being configured to like this and be connected, thereby realize the transmission of voice on IP network according to the office direction under the local dial-peer.
Because general down destination Mobile Station International ISDN Number office direction of configuration and the purpose voice gateways IP address of only allowing of the dial-peer on the existing ip voice gateway, cause audio call normally to set up when the purpose voice gateways down machine that disposes or IP address are unreachable in actual like this use, this just causes this type of VoIP reliability of applying and stability to have defective.
Existing patent documentation comprises: number of patent application is the United States Patent (USP) " Voiceover IP auto-switching/backup for emergency calls " of US2006221938.
The US2006221938 patent exists above not enough: one, this patent has only illustrated that the gateway of argument switches to when unavailable on the standby destination device but has not illustrated that main equipment recovers the back hand-off process, and the flexibility of device backup is not enough.Two, this patent is being judged the active and standby method that continues to send the Ping bag to the equipment of argument that adopted when unavailable with equipment, and this method is the burden of increasing ip voice gateway itself and whole network obviously.
Number of patent application is that the patent of CN101051883 has also just proposed how to carry out the business switching after main voice server recovers, and the business that does not propose behind the main speech server failure is switched.
Summary of the invention
Technical problem solved by the invention is to provide a kind of multi-gateway backup method of VoIP voice access, to solve in the prior art paralysis problem of VoIP speech network when purpose ip voice gateway device is unavailable.
In order to address the above problem, the invention provides the multi-gateway backup method that a kind of networking telephone voice insert, be applied in the VoIP voice system, this voice system comprises calling/called user, source ip voice gateway, IP network, active/standby purpose ip voice gateway and called PSTN, and it may further comprise the steps:
(1) called PSTN linked office to Dial-Peer under the IP address of a plurality of backup purpose ip voice gateways of configuration, and different priority is set; Calling subscriber under the ip voice gateway of source makes a call, called-number is in the called PSTN network during user, source ip voice gateway receives the Dial-Peer tabulation of calling out the local configuration of back inquiry, find according to called number argument the ip voice gateway the IP address and initiate voip call to this address and set up request, forward step (3) to if access success is set up, then do not forward next step to if the ip voice gateway of argument has response;
(2) the IP address of a plurality of backup purpose ip voice gateways of disposing in step (1) of described source ip voice gateway is according to the priority request that makes a call successively from high to low, if wherein certain IP address call is successfully set up and is then forwarded step (3) to, if then this call failure all can not successfully be set up when calling out in the IP address of the backup purpose ip voice gateway of all configurations, send busy tone to the calling subscriber and finish;
(3) purpose ip voice gateway and source ip voice gateway are successfully set up after voip call is connected, and the calling and called user can carry out normal talking.
Method of the present invention, wherein, described step (1) further is included in the relevant Dial-Peer of configuration under the ip voice gateway of source before.
Method of the present invention, wherein, described step (3) further comprises: when purpose ip voice gateway and source ip voice gateway are successfully set up after voip call is connected, described source ip voice gateway is transferred to called PSTN network with calling after searching the local number table according to called number, call setup is finished behind called subscriber's ring off-hook in the described called PSTN network, and the calling and called user can carry out normal talking.
Wherein, the ip voice gateway of argument does not have response described in the step (1), further sets up voip call when being connected for failing at the appointed time when source ip voice gateway with the ip voice gateway of argument, and the ip voice gateway of argument does not have response.
The described fixed time, set up voip call for the ip voice gateway of described source ip voice gateway and argument and be connected the needed time.
In the described step (1) to the different priority of IP address setting of a plurality of backup purpose ip voice gateways, further the IP address for the ip voice gateway of described argument is a limit priority, successively the different priority of the IP address setting of a plurality of backup purpose ip voice gateways all is lower than the priority of IP address of the ip voice gateway of argument.
Compared with prior art, the present invention increased dial-peer (Dial-Peer) down the number of the purpose ip voice gateway of configuration realized backup between these voice gateways, the ip voice gateway that has guaranteed argument breaks down or the normal foundation of the VoIP audio call temporarily can't connect the time.
In addition, the present invention also provides to a plurality of purpose ip voice gateways distribute different priority, has guaranteed that like this ip voice gateway of argument recovers can provide the voice access service again later, thereby has guaranteed the order and the flexibility of network.
Description of drawings
Fig. 1 is the networking structure schematic diagram that adopts the specific implementation of the multi-gateway backup method that networking telephone voice of the present invention insert;
Fig. 2 is the multi-gateway backup method flow chart that the described networking telephone voice of the embodiment of the invention insert;
Fig. 3 is a call proceeding process process chart in the multi-gateway backup method that inserts of the described networking telephone voice of the embodiment of the invention.
Embodiment
The multi-gateway backup method that the present invention provides a kind of VoIP voice to insert here is to solve in the prior art paralysis problem of VoIP speech network when purpose ip voice gateway device is unavailable.Below embodiment is described in detail, but not as a limitation of the invention.
As shown in Figure 1, be typical application scene of the present invention, system equipment and unit in this application scenarios comprise: calling/called voice user PHONE, source ip voice gateway, purpose ip voice gateway, the Internet of Packet Data Network and traditional public switch telephone network (PSTN).
Generally speaking in networking structure schematic diagram shown in Figure 1, when the user PHONE1 under being arranged in source ip voice gateway 1 will converse with the user PHONE2 of traditional public switch telephone network, source ip voice gateway 1 receives that setting up the VoIP voice with purpose ip voice gateway 1 after the dialing request of PHONE1 is connected, by purpose ip voice gateway 1 calling is relayed to the PSTN network again, the voice user PHONE1 that after this is positioned at the ip voice gateway just can carry out voice call with the voice user PHONE2 that is positioned at the traditional PSTN telephone network.
In the present invention when breaking down appears in purpose ip voice gateway 1, source ip voice gateway 1 can monitor fault and attempt setting up voip call with the purpose ip voice gateway 2 of backup and be connected, by purpose ip voice gateway 2 calling is relayed to the PSTN network again, the voice user PHONE1 that after this is positioned at the ip voice gateway just can carry out voice call with the voice user PHONE2 that is positioned at the traditional PSTN telephone network.
Because purpose ip voice gateway 1 has different priority with purpose ip voice gateway 2 on the ip voice gateway of source, so will provide the trunk connection service for the calling between PHONE1 and the PHONE again after 1 fault recovery of purpose ip voice gateway.
Furtherly, in networking shown in Figure 1, calling between PHONE1 and the PHONE2 provides the calling trunk connection by source ip voice gateway 1 and purpose ip voice gateway 1 generally speaking, and changing when purpose ip voice gateway 1 breaks down by source ip voice gateway 1 and purpose ip voice gateway 2 provides the calling trunk connection.Similarly, calling between PHONE3 and the PHONE2 provides the calling trunk connection by source ip voice gateway 2 and purpose ip voice gateway 2 generally speaking, and changing when purpose voice gateways 2 break down by source ip voice gateway 2 and purpose ip voice gateway 1 provides the calling trunk connection.
As shown in Figure 2, the concrete steps of the method for the invention are as follows:
Step 201, the relevant dial-peer (Dial-Peer) of configuration under the ip voice gateway of source, simultaneously have purpose PSTN linked office to dial-peer under the IP address of a plurality of backup purpose ip voice gateways of configuration, the IP address of above-mentioned these ip voice gateways has different priority, wherein, what priority was the highest is the ip voice gateway ip address of argument, other be the IP address of standby purpose voice gateways, their priority is all low than the IP address of the ip voice gateway of argument;
The call initiator PHONE that is positioned under the ip voice gateway of source makes a call, and the number of calling is the user in the called PSTN network; Source ip voice gateway receives the dial-peer tabulation of calling out the local configuration of back inquiry, find according to called number argument the ip voice gateway the IP address and initiate voip call to this address and set up request, forward step 203 to if access success is set up, then do not forward step 202 to if the ip voice gateway of argument has response.
Step 202, when source ip voice gateway is failed at the appointed time and the ip voice gateway of argument is set up when calling out, source ip voice gateway will be to the highest request of making a call of purpose ip voice gateway medium priority of a plurality of backups, if setting up, access success forwards step 203 to, if when setting up audio call (be fail in the stipulated time with the backup purpose ip voice gateway of current calling) is then to the lower backup purpose ip voice gateway request of making a call of priority call setup failure, this call failure when the purpose ip voice gateway of all configurations all can not successfully be set up calling sends busy tone to call initiator and finishes.
Step 203, the ip voice gateway of argument and source ip voice gateway are successfully set up after voip call is connected, after searching the local number table according to called number calling is transferred to called PSTN network, call setup is finished behind called subscriber's ring off-hook in the described PSTN network, and the calling and called user can normal talking.
Below in conjunction with shown in Figure 3, introduce specific implementation of the present invention and flow process in detail, an audio call subsequent steps that realizes according to the present invention is as follows:
Step 300 is positioned at the calling subscriber's off-hook dialing under the ip voice gateway of source;
Step 310, source ip voice gateway is received user's off hook signal and is collected called number;
Step 320, source ip voice gateway are inquired about the local directory that disposes after having collected called number;
Step 330, the local available dial-peer that whether has coupling is judged in the back of tabling look-up, if execution in step 340; Otherwise execution in step 390;
Step 340, the priority supreme good ip voice gateway connection that makes a call under the dial-peer of coupling;
Step 350 judges to call out to connect in the stipulated time whether set up success, if then enter step 400, access success is set up; Otherwise execution in step 360;
Step 360 is judged the purpose ip voice gateway that whether has lower priority under the dial-peer, if execution in step 370; Otherwise execution in step 390;
Step 370 is to the connection that makes a call of the lower purpose ip voice gateway of priority;
Step 380 judges to call out to connect in the stipulated time whether set up success, if then enter step 400, access success is set up; Otherwise execution in step 360;
Step 390, this call failure finishes;
Step 400, called subscriber's ring, access success is set up.
Compared with prior art, the present invention increased dial-peer (Dial-Peer) down the number of the purpose ip voice gateway of configuration realized backup between these voice gateways, the ip voice gateway that has guaranteed argument breaks down or the normal foundation of the VoIP audio call temporarily can't connect the time.
In addition, the present invention also provides to a plurality of purpose ip voice gateways distribute different priority, has guaranteed that like this ip voice gateway of argument recovers can provide the voice access service again later, thereby has guaranteed the order and the flexibility of network.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (6)

1. the multi-gateway backup method that inserts of networking telephone VoIP voice, be applied in the VoIP voice system, this voice system comprises calling/called user, source ip voice gateway, IP network, active/standby purpose ip voice gateway and called public switch telephone network PSTN, it is characterized in that, may further comprise the steps:
(1) called PSTN linked office to Dial-Peer under the IP address of a plurality of backup purpose ip voice gateways of configuration, and different priority is set; Calling subscriber under the ip voice gateway of source makes a call, called-number is in the called PSTN network during user, source ip voice gateway receives the Dial-Peer tabulation of calling out the local configuration of back inquiry, find according to called number argument the ip voice gateway the IP address and initiate voip call to this address and set up request, forward step (3) to if access success is set up, then do not forward next step to if the ip voice gateway of argument has response;
(2) the IP address of a plurality of backup purpose ip voice gateways of disposing in step (1) of described source ip voice gateway is according to the priority request that makes a call successively from high to low, if wherein certain IP address call is successfully set up and is then forwarded step (3) to, if then this call failure all can not successfully be set up when calling out in the IP address of the backup purpose ip voice gateway of all configurations, send busy tone to the calling subscriber and finish;
(3) purpose ip voice gateway and source ip voice gateway are successfully set up after voip call is connected, and the calling and called user can carry out normal talking.
2. the method for claim 1 is characterized in that, described step (1) further is included in the relevant Dial-Peer of configuration under the ip voice gateway of source before.
3. the method for claim 1, it is characterized in that, described step (3) further comprises: when purpose ip voice gateway and source ip voice gateway are successfully set up after voip call is connected, described source ip voice gateway is transferred to called PSTN network with calling after searching the local number table according to called number, call setup is finished behind called subscriber's ring off-hook in the described called PSTN network, and the calling and called user can carry out normal talking.
4. method as claimed in claim 2, it is characterized in that, the ip voice gateway of argument does not have response described in the step (1), further sets up voip call when being connected for failing at the appointed time when source ip voice gateway with the ip voice gateway of argument, and the ip voice gateway of argument does not have response.
5. method as claimed in claim 4 is characterized in that, the described fixed time, sets up voip call for the ip voice gateway of described source ip voice gateway and argument and is connected the needed time.
6. method as claimed in claim 2, it is characterized in that, in the described step (1) to the different priority of IP address setting of a plurality of backup purpose ip voice gateways, further the IP address for the ip voice gateway of described argument is a limit priority, successively the different priority of the IP address setting of a plurality of backup purpose ip voice gateways all is lower than the priority of IP address of the ip voice gateway of argument.
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CN102026242A (en) * 2009-09-22 2011-04-20 中兴通讯股份有限公司 Multimedia session method and device
US8626174B2 (en) 2009-12-09 2014-01-07 Telefonaktiebolaget L M Ericsson (Publ) Call switching in packet-based communication networks
JP2011211554A (en) * 2010-03-30 2011-10-20 Hitachi Plant Technologies Ltd Radio sensor network system
CN101944987B (en) * 2010-05-27 2013-02-20 迈普通信技术股份有限公司 Method for setting and switching dial-on-demand lines of master and slave backups, and system and equipment
CN101951346B (en) * 2010-10-27 2013-06-19 迈普通信技术股份有限公司 SIP (Session Initiation Protocol) relay routing method and system thereof
CN101969512B (en) * 2010-10-29 2015-04-01 迈普通信技术股份有限公司 IP (Internet Protocol) voice private line control method and equipment thereof
CN102255750B (en) * 2011-06-28 2017-05-10 中兴通讯股份有限公司 Method and device for service disaster recovery protection
CN103391378B (en) * 2012-05-07 2015-12-02 华为技术有限公司 A kind of Voice over IP method of calling, Apparatus and system
CN108632476B (en) * 2018-04-26 2021-10-15 贵阳朗玛信息技术股份有限公司 PSTN-fused mobile internet voice platform system and communication method thereof

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