CN102487424A - Method and communication device for realizing internet protocol (IP) telephone escape - Google Patents

Method and communication device for realizing internet protocol (IP) telephone escape Download PDF

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Publication number
CN102487424A
CN102487424A CN201010577875XA CN201010577875A CN102487424A CN 102487424 A CN102487424 A CN 102487424A CN 201010577875X A CN201010577875X A CN 201010577875XA CN 201010577875 A CN201010577875 A CN 201010577875A CN 102487424 A CN102487424 A CN 102487424A
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phone
voice
address
survival equipment
escape
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CN201010577875XA
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CN102487424B (en
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郭晓军
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New H3C Technologies Co Ltd
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Hangzhou H3C Technologies Co Ltd
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Abstract

The invention discloses a method for realizing internet protocol (IP) telephone escape, which is applied in a voice Over Internet Protocol network. The method comprises the following steps that: a voice server in a headquarter network preassign an IP telephone charged by escape equipment in an remote station; and when the voice server is unavailable, the escape equipment finishes calling of the IP telephone in the remote station according to escape information calls route list generated from the voice server. The invention also discloses a communication device for realizing the IP telephone escape. Through the method and the communication device, the IP telephone in the remote station can also dial and answer a call when the voice server is unavailable, and the IP address of the IP telephone can be changed.

Description

A kind of method and communicator of realizing the escape of IP phone
Technical field
The present invention relates to voice-bearer on Internet Protocol (VoIP) technical field, particularly a kind of method and communicator of realizing the escape of Internet Protocol (IP) phone.
Background technology
Along with popularizing rapidly of IP network, VoIP has obtained development fast as a kind of new application, and the main flow that becomes the enterprises communication network is selected.In voip network, the IP phone is main terminal equipment, and it is the important carrier that the user uses miscellaneous service.Therefore, the IP phone is in a single day unavailable, and the user can't be communicated.
Cause the disabled reason of IP phone to have a lot, as: voice server fault, IP network interruption, IP phone fault, outage etc.In the design of voip network, can adopt various means to improve reliability, as: server master-slave redundancy, IP network redundancy, IP phone POE power supply etc.But the problems referred to above may appear, therefore, the escape of IP phone has just become one of problem that needs consideration in the ip voice solution and solve.
Fig. 1 is the networking sketch map of voip network of the prior art.As shown in Figure 1, in VoIP net net, the characteristic that network topology structure has also adopted general enterprise to have is divided into usually: main office network, branch office network and remote site.Wherein, in branch office network,, can dispose the telex network that voice server and voice gateways are managed this branch because it is larger.And in remote site; Because its scale is less,, generally can not dispose voice server from cost-effective consideration; Only dispose voice gateways and come and local public switch telephone network (PSTN) network interworking, user's IP phone directly is registered on the voice server of main office network.
In Fig. 1, the IP phone of remote site directly is registered on the voice server of main office network through the wide area IP network, accepts the management of general headquarters' voice server.Usually, in order to improve the reliability of networking, can dispose active and standby part of voice server in the main office network; For the IP phone provides the redundancy backup function; Under the situation of main speech server failure, can switch in real time on the backup voice server, guarantee the availability of IP phone to greatest extent.But this mainly is to guarantee on the reliability of slave unit, if interrupting appears in IP network, still can cause IP phone in the remote site owing to the contact that loses with main office network becomes unavailable.In addition, when active and standby voice server all under the situation of fault, the IP phone of remote site also can be unavailable, though the generation probability of this situation is very little.Both of these case all classifies as the disabled situation of general headquarters' voice server.
When general headquarters' voice server is unavailable, (comprise that IP network interrupts and the equal fault of active and standby voice server), how to realize that the IP phone escape in the remote site becomes the existing problem of needing solution badly.
Summary of the invention
In view of this, the invention provides a kind of method of the IP of realization phone escape, make that the IP phone in the remote site can be escaped when voice server is unavailable.
The present invention also provides a kind of communicator, makes that the IP phone in the remote site can be escaped when voice server is unavailable.
In order to achieve the above object, the technical scheme of the present invention's proposition is:
A kind of method that realizes Internet Protocol IP phone escape is applied on Internet Protocol in the voice-bearer voip network, and this method comprises:
Voice server in the main office network is the IP phone be responsible for of the survival equipment in the assigning remote website in advance;
When voice server was unavailable, the call routing table that survival equipment generates according to the escape information from voice server was accomplished the calling of the inner IP phone of remote site.
Voice server in the main office network is the voice gateways be responsible for of the survival equipment in the assigning remote website in advance further; When voice server was unavailable, this method further comprised: the call routing table that route stand-by that voice gateways generated according to when registration and survival equipment generate according to the escape information from voice server is accomplished the calling between the IP phone of the outside phone of remote site and remote site inside.
The calling that the call routing table that said survival equipment generates according to the escape information from voice server is accomplished the inner IP phone of remote site comprises:
Survival equipment finds out the corresponding IP address of number according to the number of called IP phone from call routing table, to IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
The calling that the call routing table that route stand-by that said voice gateways generated according to when registration and survival equipment generate according to the escape information from voice server is accomplished between the IP phone of the outside phone of remote site and remote site inside comprises:
The IP address that survival equipment is corresponding according to voice gateways in the call routing table sends to calling to voice gateways that should the IP address, with accomplish the outside phone of the inner IP phone call remote website of remote site and,
Voice gateways are according to the IP address of the survival equipment in the route stand-by; Route the call to the corresponding survival equipment in this IP address; From call routing table, find out the IP address of called number by survival equipment, to accomplish the inner IP phone of the outside phone call remote website of remote site.
The generation of said route stand-by and call routing table comprises:
Survival equipment, IP phone and voice gateways are registered self identify label number ID and IP address on voice server;
The IP phone that said voice server is responsible with survival equipment and the escape information of voice gateways send to survival equipment; And the IP address of said survival equipment sent to said IP phone and voice gateways, voice gateways generate route stand-by according to the IP address of said survival equipment;
Survival equipment is subscribed to the IP phone and the escape information of voice gateways that this survival equipment is responsible for escaping to voice server, and said escape information comprises the phone number of said IP phone and voice gateways and the IP address of correspondence thereof;
Voice server sends to said survival equipment with the escape information of said IP phone and voice gateways;
Survival equipment generates call routing table according to the phone number of IP phone in the said escape information and voice gateways and corresponding IP address thereof.
Said survival equipment is subscribed to SIP SUBSCRIBE message through Session initiation Protocol and is subscribed to the IP phone that this survival equipment is responsible for escaping and the escape information of voice gateways to voice server;
Said voice server notifies the SIP NOTIFY that the escape information of IP phone and voice gateways is sent to survival equipment through Session initiation Protocol.
When IP phone and voice gateways at every turn when voice server is registered, voice server sends to said survival equipment with the escape information of said IP phone and voice gateways.
Said voice server periodically sends the escape information of said IP phone and voice gateways to survival equipment.
A kind of communicator; Be applied on Internet Protocol in the voice-bearer voip network, and this communicator is designated as survival equipment, this communicator comprises Registering modules, first receiver module, subscribing module, second receiver module, list item generation module and escape module; Wherein
Said Registering modules is used for registering to voice server;
Said first receiver module; Be used for after said Registering modules has been registered; Reception is by the Internet Protocol IP phone of voice server transmission and the escape information of voice gateways, and said escape information comprises the phone number and the corresponding IP address thereof of said IP phone and voice gateways;
Said subscribing module is used for subscribing to the IP phone that this survival equipment is responsible for escaping and the escape information of voice gateways to said voice server;
Said second receiver module is used to receive the IP phone of the said subscribing module subscription of being sent by voice server and the escape information of voice gateways;
Said list item generation module; The IP phone of the escape information that is used for receiving according to said first receiver module and the phone number of voice gateways and corresponding IP address thereof generate call routing table, and according to the said call routing table of escape information updating of said second receiver module reception;
Said escape module is used for when voice server is unavailable, accomplishes the calling of the inner IP phone of remote site according to the call routing table of list item generation module generation.
The calling that the call routing table that said escape module generates according to the list item generation module is accomplished the inner IP phone of remote site comprises:
The escape module finds out the corresponding IP address of number according to the number of called IP phone from call routing table, to IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
The IP address that the escape module is corresponding according to voice gateways in the call routing table sends to calling to voice gateways that should the IP address, with accomplish the outside IP phone of the inner IP phone call remote website of remote site and,
Receive voice gateways according to the IP of this survival equipment in the route stand-by go to the calling of this survival equipment; Be routed to corresponding IP phone with calling out according to the IP address that finds out called number in the call routing table, to accomplish the inner IP phone of the outside phone call remote website of remote site.
This communicator also comprises: acquisition module, be used for the IP address that the protocol DHCP server obtains ID, IP address and voice server being set through DynamicHost, then,
Said Registering modules, register on the corresponding voice server in the IP address of said voice server the ID and the IP address that are used for said acquisition module is got access to.
Said subscribing module is used for subscribing to SIP SUBSCRIBE message is subscribed to said IP phone and escape information from voice gateways to said voice server through Session initiation Protocol;
Said second receiver module is used to receive by voice server through the IP phone of the said subscribing module subscription of Session initiation Protocol notice SIPNOTIFY message transmission and the escape information of voice gateways.
When IP phone and voice gateways at every turn when voice server is registered, said second receiver module receives the IP phone that the said subscribing module of being sent by voice server subscribes to and the escape information of voice gateways.
Said second receiver module periodically receives the IP phone of the said subscribing module subscription of being sent by voice server and the escape information of voice gateways.
In sum; The method of the realization IP phone escape that the present invention adopted; Be through by IP phone and the voice gateways be responsible for of the survival equipment in the assigning remote website in advance of the voice server in the main office network; Thereby when voice server was unavailable, survival equipment can be accomplished the calling of the inner IP phone of remote site according to the IP address in the call routing table.Therefore, the present invention program not only can make the IP phone in the remote site when voice server is unavailable, also can dial and receive calls, and the IP address of IP phone can change.
Description of drawings
Fig. 1 is the networking sketch map of voip network of the prior art;
Fig. 2 realizes the workflow diagram of IP phone escape method embodiment for the present invention;
The structural representation of the communicator that Fig. 3 the present invention is adopted.
Embodiment
In order to solve the problem that exists in the prior art; The present invention proposes a kind of method of the IP of realization phone escape; Promptly through by the survival equipment in the assigning remote website in advance of the voice server in the main office network; When voice server was unavailable, survival equipment can be accomplished the calling of the inner IP phone of remote site according to the IP address in the call routing table.
Before introducing concrete implementation; At first survival equipment is explained as follows: survival equipment is the standard Linux equipment of operation escape module; It both can be independent computer, server or an embedded device; Also can be integrated in the voice gateways, and the escape module is the software of a session initiation protocol based user agent (SIP UA), can accomplishes software download, the registration to voice server, subscription, reception notification, reach route etc. is carried out in calling.Present embodiment is to describe as survival equipment with independent computer, server or embedded device, and the mode that is integrated in the voice gateways is the same on thinking and flow process, repeats no more here.
Based on above-mentioned introduction, the concrete realization of scheme according to the invention comprises:
Voice server in the main office network is the IP phone be responsible for of the survival equipment in the assigning remote website in advance; When voice server was unavailable, the call routing table that survival equipment generates according to the escape information from voice server was accomplished the calling of the inner IP phone of remote site.
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing and specific embodiment that the present invention is done to describe in detail further below.
Fig. 2 realizes the workflow diagram of IP phone escape method embodiment for the present invention.This method is applied in the voip network, and the computer in the voip network, server or embedded device are designated as the survival equipment in the remote site, and then this method comprises:
Step 201: the voice server in the main office network is the survival equipment in the assigning remote website in advance.
In this step; In the time of survival equipment in the voice server assigning remote website, IP phone and the voice gateways that also need specify this survival equipment to be responsible for are because this step is that example describes with a remote site; Therefore; What the survival equipment in remote site was responsible for is IP phone and voice gateways all in this remote site, and the situation that has a plurality of remote sites in the voip network roughly the same repeats no more.
Need to prove that voice server identifies survival equipment, IP phone and voice gateways through ID.
Step 202:IP phone, voice gateways and survival equipment obtain relevant configuration separately through Dynamic Host Configuration Protocol server respectively.
IP phone, voice gateways and survival equipment all need obtain the IP address of this equipment, the ID of this equipment and the IP address of voice server through DHCP 184 options when starting; Here; DHCP 184 options are scaling options in the existing dynamic host configuration protocol DHCP; Through this option, can carry the self-defining parameter of some equipment.
Step 203:IP phone, voice gateways and survival equipment are registered to the voice server of correspondence according to the IP address of the voice server that gets access to respectively.
Need to prove; In this step; IP phone, voice gateways and survival equipment are periodically registered to voice server; So that voice server gets access to the up-to-date IP address of each equipment, thereby make follow-up IP phone and voice gateways can get access to the up-to-date IP address of survival equipment, survival equipment also can get access to the up-to-date IP address of IP phone and voice gateways.
What also need explain is that survival equipment is at the ID that when voice server is registered, need carry equipment, so that voice server can judge whether to be survival equipment according to this ID.
Step 204: after voice server receives registration message; The IP phone that the survival equipment of prior appointment of registration is responsible for escaping and the escape information of voice gateways send to survival equipment; And the IP address of said survival equipment sent to IP phone and the voice gateways that it is responsible for escaping; Wherein, escape information is meant survival equipment needed necessary information when the IP phone is called out route.
In this step, voice server can be handed down to survival equipment with escape information through Session initiation Protocol notice (SIP NOTIFY) message, specifically can adopt following form:
NOTIFY?sip:survive-point-1192.168.0.100?SIP/2.0
Via:SIP/2.0/UDP?10.0.0.1:5060;branch=ab364ef7b6d7ef?cebedb9
From:<sip:voice-server10.0.0.1>;tag=6e89184dbbe625?ab364ef7b6d
To:<sip:survive-point-1192.168.0.100>
Call-ID:fa997c74a364fadae8a9b201cb3cc9be10.0.0.1
CSeq:1?NOTIFY
Max-Forwards:70
Contact:sip:10.0.0.1:5060
Event:survive-info
Subscription-State:active;expires=3600
Content-Type:application/survive-info
Content-Length:34
NUMBER=1000
IPADDRESS=192.168.0.1。
Need to prove that when the ID of the survival equipment of request registration in the step 203 was designated in advance in voice server, this step is carried out just can be successfully; Otherwise, finish whole workflow with registration failure.
Step 205: voice gateways generate route stand-by according to the IP address of the survival equipment that receives, when unavailable, will from calling that PSTN come in through routing gateway be routed to survival equipment according to route stand-by with convenient voice server.
Step 206: survival equipment is subscribed to the escape information of its IP phone being responsible for escaping and voice gateways to voice server.
In this step, survival equipment is to subscribe to escape information through the ID that sends self to voice server, and escape information is meant survival equipment needed necessary information when the IP phone is called out route.With regard to the most basic calling escape,, that is to say that escape information comprises these two and gets final product as long as have phone number and corresponding IP address thereof just can generate call routing table.In reality, escape information is the portability out of Memory also, is as the criterion with the realization that does not influence the embodiment of the invention.
Need to prove that survival equipment obtained escape information when voice server is registered, further subscribe to escape information, is in order to make survival equipment can obtain up-to-date escape information.In this step, survival equipment can be subscribed to (SIP SUBSCRIBE) message through Session initiation Protocol and subscribe to escape information to voice server, also can subscribe to escape information through other message in the reality.As to subscribe to the escape information in the survive-point-1 group, comprise in this group that number is 1000,2000,3000 IP phone and voice gateways GW-1, then SIP SUBSCRIBE form specifically can for:
SUBSCRIBE?sip:voice-server10.0.0.1?SIP/2.0
Via:SIP/2.0/UDP?192.168.0.100:5060;branch=af7b8130b20106b5786aodbc33913be
From:<sip:
survive-point-1192.168.0.100>;tag=cc307b72b8e8d6729807712abc55214718
To:<sip:voice-server10.0.0.1>
call-ID:e3f07a4cbbb34c1d83fa12757467343b192.168.0.100
Contact:<sip:192.168.0.100:5060>
CSeq:1?SUBSCRIBE
Event:phone-info
Expires:3600
Content-Length:0。
Step 207: voice server is handed down to survival equipment to generate up-to-date call routing table with up-to-date escape information.
Need to prove; In this step; When IP phone and voice gateways at every turn when voice server is registered, voice server all need be handed down to survival equipment with the IP phone of registration and the escape information of voice gateways, further; In order to guarantee that survival equipment can get access to the up-to-date escape information of IP phone and voice gateways (being mainly the IP address of IP phone and voice gateways), voice server can also periodically issue escape information to survival equipment.
Step 208: survival equipment generates call routing table according to the escape information that receives.
After survival equipment is received escape information, can generate complete call routing table according to the telephone number of IP phone in the escape information and voice gateways and corresponding IP address, the concrete form of call routing table can be referring to table 1:
Table 1
Telephone number The IP address
GW-1 (voice gateways) 192.168.0.200
1000 (IP phones) 192.168.0.1
2000 (IP phones) 192.168.0.2
3000 (IP phones) 192.168.0.2
... ...
Wherein, the telephone number in the table 1 has partly comprised the ID of voice gateways and the number of IP phone, and the IP address part is voice gateways and each IP phone corresponding address, and this address is the address that voice gateways and IP phone are registered to voice server in real time.
Step 209: when voice server is unavailable, survival equipment according to call routing table or/and route stand-by makes the IP phone in the remote site realize escape.
When voice server is unavailable; The IP phone realizes that escape has two kinds of situation; Only realize the escape between the inner IP phone of remote site and realize the escape between the outside phone of IP phone that remote site is inner and remote site jointly promptly that the outside phone of said remote site is conversed through the PSTN net that links to each other with voice gateways and the IP phone of remote site inside according to call routing table and route stand-by according to call routing table.
In this step; Survival equipment makes the inner IP phone of remote site realize that escape comprises according to call routing table: survival equipment finds out the corresponding IP address of number according to the number of called IP phone from call routing table; To IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
Make IP phone and the outside phone of remote site that remote site is inner realize that escape comprises according to call routing table and route stand-by: the IP address that survival equipment is corresponding according to voice gateways in the call routing table; Calling is sent to voice gateways that should the IP address; To accomplish the outside phone of the inner IP phone call remote website of remote site; With, voice gateways route the call to the corresponding survival equipment in this IP address according to the IP address of the survival equipment in the route stand-by; From call routing table, find out the IP address of called number by survival equipment, to accomplish the inner IP phone of the outside phone call remote website of remote site.
Certainly; In actual networking; Sometimes do not exist voice gateways to realize the conversation between the inner IP phone of remote site and the outside PSTN net in the network, communicating with each other between the inner IP phone of remote site just, the escape of this moment only need realize that the escape between the IP phone of remote site inside gets final product; Promptly; Survival equipment finds out the corresponding IP address of number according to the number of called IP phone from call routing table, to IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
As long as step 206 wherein, 207 execution sequences be step 204 after, and when 207 carrying out when having upgraded call routing table in steps, step 209 realizes escaping with the call routing table of renewal.
So far, promptly accomplished the whole workflow that the present invention realizes IP phone escape method embodiment.
Based on said method, Fig. 3 is the structural representation of the communicator that the present invention adopted.As shown in Figure 3; This communicator is applied in the voip network; PC in the voip network, server or embedded device are communicator, and this communicator is designated as survival equipment, and this communicator comprises: acquisition module 31, Registering modules 32, first receiver module 33, subscribing module 34, second receiver module 35, list item generation module 36 and escape module 37; Wherein
Said acquisition module 31 is used for obtaining relevant configuration through Dynamic Host Configuration Protocol server, and said relevant configuration comprises the IP address of ID, IP address and voice server.
Said Registering modules 32, register on the corresponding voice server in the IP address of said voice server the ID and the IP address that are used for said acquisition module 31 is got access to.
Said first receiver module 33; Be used for after said Registering modules 32 has been registered; Reception is by the IP phone of voice server transmission and the escape information of voice gateways, and said escape information comprises the phone number and the corresponding IP address thereof of said IP phone and voice gateways.What preferably, said first receiver module 33 received is through the said IP phone of Session initiation Protocol notice SIP NOTIFY transmission and the escape information of voice gateways by voice server.
Said subscribing module 34 is used for subscribing to the IP phone that this survival equipment is responsible for escaping and the escape information of voice gateways to said voice server.
In the present embodiment, said subscribing module is subscribed to SIP SUBSCRIBE message is subscribed to said IP phone and escape information from voice gateways to said voice server through Session initiation Protocol.
Said second receiver module 35 is used to receive the IP phone of said subscribing module 34 subscription of being sent by voice server and the escape information of voice gateways.
In the present embodiment; What said second receiver module 35 received is the IP phone of being subscribed to by the said subscribing module that voice server sends through Session initiation Protocol notice SIP NOTIFY and the escape information of voice gateways, and what receive is the IP phone of the said subscribing module subscription of being sent by voice server and the escape information of voice gateways.
Need to prove; In the present embodiment; When IP phone and voice gateways at every turn when voice server is registered, voice server all need be handed down to second receiver module 35 with the IP phone of registration and the escape information of voice gateways, further; In order to make second receiver module 35 can get access to the up-to-date escape information of IP phone and voice gateways (being mainly the IP address of IP phone and voice gateways), voice server can also periodically issue escape information to second receiver module 35.
Said list item generation module 36; The IP phone of the escape information that is used for receiving according to said first receiver module 33 and the phone number of voice gateways and corresponding IP address thereof generate call routing table, and according to the said call routing table of escape information updating of said second receiver module 35 receptions.
Said escape module 37 is used for when voice server is unavailable, accomplishes the calling of the inner IP phone of remote site according to the call routing table of list item generation module 36 generations.Be specially: the escape module finds out the corresponding IP address of number according to the number of called IP phone from call routing table, to IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
Further; Said escape module 37 also is used for when voice server is unavailable, the IP address that escape module 37 is corresponding according to voice gateways in the call routing table; Calling is sent to voice gateways that should the IP address; With accomplish the outside phone of the inner IP phone call remote website of remote site and, receive voice gateways according to the IP of this survival equipment in the route stand-by go to the calling of this survival equipment; Be routed to corresponding IP phone with calling out according to the IP address that finds out called number in the call routing table, to accomplish the inner IP phone of the outside phone call remote website of remote site.
So far, promptly obtained the communicator that the present invention adopted.
In a word; The method of the realization IP phone escape that the present invention adopted; Through by IP phone and the voice gateways be responsible for of the survival equipment in the assigning remote website in advance of the voice server in the main office network; Thereby when voice server is unavailable; Survival equipment can be accomplished the calling of the IP phone of remote site inside according to the IP address in the call routing table, further, and the calling between the IP phone that the call routing table completion remote site that can also generate according to route stand-by and the survival equipment by the voice gateways generation is inner and the phone of remote site outside.Therefore, the present invention program not only can make the IP phone in the remote site when voice server is unavailable, also can dial and receive calls, and the IP address of IP phone can change.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.

Claims (15)

1. method that realizes Internet Protocol IP phone escape is applied in the voice-bearer voip network, it is characterized in that on Internet Protocol this method comprises:
Voice server in the main office network is the IP phone be responsible for of the survival equipment in the assigning remote website in advance;
When voice server was unavailable, the call routing table that survival equipment generates according to the escape information from voice server was accomplished the calling of the inner IP phone of remote site.
2. method according to claim 1; It is characterized in that; Voice server in the main office network is the voice gateways be responsible for of the survival equipment in the assigning remote website in advance further; When voice server was unavailable, this method further comprised: the call routing table that route stand-by that voice gateways generated according to when registration and survival equipment generate according to the escape information from voice server is accomplished the calling between the IP phone of the outside phone of remote site and remote site inside.
3. method according to claim 1 is characterized in that, the calling that the call routing table that said survival equipment generates according to the escape information from voice server is accomplished the inner IP phone of remote site comprises:
Survival equipment finds out the corresponding IP address of number according to the number of called IP phone from call routing table, to IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
4. method according to claim 2; It is characterized in that the calling that the call routing table that route stand-by that said voice gateways generated according to when registration and survival equipment generate according to the escape information from voice server is accomplished between the IP phone of the outside phone of remote site and remote site inside comprises:
The IP address that survival equipment is corresponding according to voice gateways in the call routing table sends to calling to voice gateways that should the IP address, with accomplish the outside phone of the inner IP phone call remote website of remote site and,
Voice gateways are according to the IP address of the survival equipment in the route stand-by; Route the call to the corresponding survival equipment in this IP address; From call routing table, find out the IP address of called number by survival equipment, to accomplish the inner IP phone of the outside phone call remote website of remote site.
5. according to claim 2 or 4 described methods, it is characterized in that the generation of said route stand-by and call routing table comprises:
Survival equipment, IP phone and voice gateways are registered self identify label number ID and IP address on voice server;
The IP phone that said voice server is responsible with survival equipment and the escape information of voice gateways send to survival equipment; And the IP address of said survival equipment sent to said IP phone and voice gateways, voice gateways generate route stand-by according to the IP address of said survival equipment;
Survival equipment is subscribed to the IP phone and the escape information of voice gateways that this survival equipment is responsible for escaping to voice server, and said escape information comprises the phone number of said IP phone and voice gateways and the IP address of correspondence thereof;
Voice server sends to said survival equipment with the escape information of said IP phone and voice gateways;
Survival equipment generates call routing table according to the phone number of IP phone in the said escape information and voice gateways and corresponding IP address thereof.
6. method according to claim 5 is characterized in that, said survival equipment is subscribed to SIP SUBSCRIBE message through Session initiation Protocol and subscribed to the IP phone that this survival equipment is responsible for escaping and the escape information of voice gateways to voice server;
Said voice server notifies the SIP NOTIFY that the escape information of IP phone and voice gateways is sent to survival equipment through Session initiation Protocol.
7. method according to claim 5 is characterized in that, when IP phone and voice gateways at every turn when voice server is registered, voice server sends to said survival equipment with the escape information of said IP phone and voice gateways.
8. method according to claim 7 is characterized in that, said voice server periodically sends the escape information of said IP phone and voice gateways to survival equipment.
9. communicator; Be applied on Internet Protocol in the voice-bearer voip network; And this communicator is designated as survival equipment, it is characterized in that, this communicator comprises Registering modules, first receiver module, subscribing module, second receiver module, list item generation module and escape module; Wherein
Said Registering modules is used for registering to voice server;
Said first receiver module; Be used for after said Registering modules has been registered; Reception is by the Internet Protocol IP phone of voice server transmission and the escape information of voice gateways, and said escape information comprises the phone number and the corresponding IP address thereof of said IP phone and voice gateways;
Said subscribing module is used for subscribing to the IP phone that this survival equipment is responsible for escaping and the escape information of voice gateways to said voice server;
Said second receiver module is used to receive the IP phone of the said subscribing module subscription of being sent by voice server and the escape information of voice gateways;
Said list item generation module; The IP phone of the escape information that is used for receiving according to said first receiver module and the phone number of voice gateways and corresponding IP address thereof generate call routing table, and according to the said call routing table of escape information updating of said second receiver module reception;
Said escape module is used for when voice server is unavailable, accomplishes the calling of the inner IP phone of remote site according to the call routing table of list item generation module generation.
10. communicator according to claim 9 is characterized in that, the calling that the call routing table that said escape module generates according to the list item generation module is accomplished the inner IP phone of remote site comprises:
The escape module finds out the corresponding IP address of number according to the number of called IP phone from call routing table, to IP phone that should the IP address is made a call, to accomplish the calling between the inner IP phone of remote site.
11. communicator according to claim 10 is characterized in that,
The IP address that the escape module is corresponding according to voice gateways in the call routing table sends to calling to voice gateways that should the IP address, with accomplish the outside IP phone of the inner IP phone call remote website of remote site and,
Receive voice gateways according to the IP of this survival equipment in the route stand-by go to the calling of this survival equipment; Be routed to corresponding IP phone with calling out according to the IP address that finds out called number in the call routing table, to accomplish the inner IP phone of the outside phone call remote website of remote site.
12. communicator according to claim 9 is characterized in that, this communicator also comprises: acquisition module, be used for the IP address that the protocol DHCP server obtains ID, IP address and voice server being set through DynamicHost, then,
Said Registering modules, register on the corresponding voice server in the IP address of said voice server the ID and the IP address that are used for said acquisition module is got access to.
13. communicator according to claim 9 is characterized in that, said subscribing module is used for subscribing to SIP SUBSCRIBE message is subscribed to said IP phone and escape information from voice gateways to said voice server through Session initiation Protocol;
Said second receiver module is used to receive by voice server through the IP phone of the said subscribing module subscription of Session initiation Protocol notice SIPNOTIFY message transmission and the escape information of voice gateways.
14. communicator according to claim 9; It is characterized in that; When IP phone and voice gateways at every turn when voice server is registered, said second receiver module receives the IP phone that the said subscribing module of being sent by voice server subscribes to and the escape information of voice gateways.
15. communicator according to claim 15 is characterized in that, said second receiver module periodically receives the IP phone of the said subscribing module subscription of being sent by voice server and the escape information of voice gateways.
CN201010577875.XA 2010-12-02 2010-12-02 Method and communication device for realizing internet protocol (IP) telephone escape Expired - Fee Related CN102487424B (en)

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CN113765894A (en) * 2021-08-13 2021-12-07 武汉极物智联科技有限公司 Method and system for intercommunication between soft and hard telephones in hospital based on SIP protocol

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