CN103795878A - Protection method, device and system for voice-over-internet-protocol service - Google Patents
Protection method, device and system for voice-over-internet-protocol service Download PDFInfo
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- CN103795878A CN103795878A CN201210435775.2A CN201210435775A CN103795878A CN 103795878 A CN103795878 A CN 103795878A CN 201210435775 A CN201210435775 A CN 201210435775A CN 103795878 A CN103795878 A CN 103795878A
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Abstract
The invention provides a protection method, device and system for a voice-over-internet-protocol (VoIP) service. The method, device and system are applied to the technical field of communication. The protection method includes: a standby call control device receives and stores registration information of a call access device in a protective group and takes over the VoIP service of the call access device according to the registration information when a fault occurs to a main call control device in the protective group. In the protection method, in a protection switching process, re-registration of the call access device is not needed and after the switching, the VOIP service of the call access device can be taken over in a seamless manner and dropped calls are not caused so that realizing complexity of protection of the VoIP service is reduced, call quality is also guaranteed and user experience is improved.
Description
Technical field
The present invention relates to optical communication technique field, be specifically related to a kind of guard method, equipment and system of Voice over IP business.
Background technology
Along with the development of IP network, the use of Voice over IP (Voice over Internet Protocol, VoIP) is more and more general.Voip network comprises call control device and calls out access device, in order to ensure stable, the reliability of business, also disposes backup call control appliance, for bearer service in the time that primary call control device breaks down.Call out access device, need to monitor at any time the running status of primary call control device, in the time finding that primary call control device is unavailable, must again be connected with backup call control appliance, guarantee normally carrying out of follow-up business.
But, the active and standby switching of call control device is mainly initiated and is completed by calling out access device, this just requires to call out access device and configures the device address of multiple call control devices, and calls out access device and need to automatically monitor the running status of primary call control device and carry out as required corresponding active and standby switching.The function that configures active and standby switching at calling access device, by increasing the cost of calling out access device, in fact, has a lot of calling access devices not support these functions in the market.In the time that the primary call control device being connected with the calling access device that does not configure active and standby handoff functionality breaks down, communication link cannot be realized masterslave switchover, occur service disconnection.
Summary of the invention
For the guard method that solves existing ip voice bearer service high to calling out access device configuration requirement, and the problem of protection weak effect, the embodiment of the present invention provides a kind of guard method, equipment and system of ip voice bearer service, concrete:
According to the first aspect of the embodiment of the present invention, a kind of guard method of Voice over IP business is provided, be applied in Voice over IP service protection group, described protection group at least comprises interconnective the first call control device and the second call control device, all-calls control appliance in described protection group connects calls out access device, the Voice over IP business that described Voice over IP business is described calling access device, described guard method comprises: the second call control device as the stand-by equipment in described protection group receives the message from the first call control device as host apparatus in described protection group, obtain the log-on message of the described calling access device carrying in described message in described protection group, described the second call control device is monitored the state of described the first call control device, in the time detecting that described the first call control device breaks down, described the second call control device is using the IP address of described protection group as the IP address of self, send the free address resolution protocol message of the MAC Address of having carried described protection group to described calling access device, and become master state from stand-by state, described the second call control device obtains from described calling access device or points to the call request of described calling access device, processes described Voice over IP business according to described call request and described log-on message.
In the possible implementation of the first of first aspect, when described the second call control device is after stand-by state becomes master state, according to calling out the current Voice over IP business of access device described in described log-on message and call conversation information processing, the call conversation information of the current Voice over IP business of described calling access device that described call conversation information sends before it breaks down for described the first call control device.
In the possible implementation of the second of first aspect, described log-on message comprises: the mark of described calling access device and/or authentication challenge code.
According to the second aspect of the embodiment of the present invention, a kind of call control device is provided, described call control device comprises: receiver module, for receipt message; Memory module, for storing the first log-on message that the received message of described receiver module is carried, described the first log-on message is the log-on message of the first calling access device in protection group being connected with described call control device, and described protection group is the protection group at described call control device place; Processing module, be used for judging whether described call control device need to become master state from stand-by state, if, IP address using the IP address of described protection group as described call control device, send the free address resolution protocol message of the MAC Address of having carried described protection group to described the first calling access device, and described call control device is set to master state; Obtain from described calling access device or point to the call request of described calling access device, processing the Voice over IP business of described calling access device according to described call request and described the first log-on message; Described processing module is connected with described receiver module and described memory module.
In the possible implementation of the first of second aspect, described processing module, also for judging that whether described call control device need to become non-active status from master state, if so, stops process IP carry voice traffic.
In the possible implementation of the second of second aspect, described memory module, the call conversation information of also carrying for storing the received message of described receiver module, described call conversation information is the call conversation information of the current Voice over IP business of described calling access device; Described processing module, also for being set to after master state at described call control device, according to current Voice over IP business described in described the first log-on message from described memory module and described call conversation information processing.
In the third possible implementation of second aspect, described processing module, also for when described call control device is during in master state, call out second log-on message of access device in described protection group according to generating described second from the second login request message of calling out access device being connected with described call control device, and process the described second Voice over IP business of calling out access device according to described the second log-on message, generate the notice message that carries described the second log-on message; Described memory module, also for storing described the second log-on message; Described call control device also comprises sending module, also sends described notice message for other call control devices to described protection group.
According to the third aspect of the embodiment of the present invention, a kind of Voice over IP system is also provided, described system comprises interconnective protection group and calls out access device; Described protection group at least comprises interconnective as the first call control device of host apparatus with as the second call control device of stand-by equipment; Described the first call control device, for generating log-on message according to the registration request from described calling access device, after succeeding in registration, according to from described calling access device or point to the call request of this calling access device, and described log-on message is processed the Voice over IP business of described calling access device; Generation carries the first message of described registration message, and other call control devices in described protection group send described the first message; During it is as host apparatus, timed sending is used for noticing the second message of its operating state, and/or, in the time that becoming non-active status, master state sends the 3rd message at it; Described the second call control device, for receiving described the first message and storing the described log-on message that described the first message is carried; Monitor the state of described the first call control device according to described the second message and/or described the 3rd message, in the time detecting that described the first call control device breaks down, using the IP address of described protection group as the IP address of self, send the free address resolution protocol message of the MAC Address of having carried described protection group to described calling access device, and become master state from stand-by state; Obtain from described calling access device or point to the call request of described calling access device, processing described Voice over IP business according to described call request and described log-on message.
In the possible implementation of the first of the third aspect, described the second call control device, also for becoming after master state at it, take over the current Voice over IP business of described calling access device according to described log-on message and call conversation information, the call conversation information of the current Voice over IP business of described calling access device that described call conversation information sends before it breaks down for described the first call control device.
Guard method, the equipment and system of the VoIP business of the calling access device disclosing according to the embodiment of the present invention first and second and three aspects:; in protection reversed process; call out access device without re-registering; primary call control device after switching can seamless pipe VOIP business; and can not cause dropped calls; therefore simplified the complexity that VoIP service protection is realized, speech quality is also protected, and has improved user's experience.Simultaneously, do not need to call out access device call control device is carried out to abnormality detection and corresponding masterslave switchover, do not need to call out two upper row addresses of access device configuration, reduced and called out the configuration requirement of access device, thereby reduced the cost of calling out access device yet.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention and related embodiment, provide the following drawings:
Fig. 1 is for providing the flow chart of calling out access device Voice over IP service protecting method in the embodiment of the present invention one;
Fig. 2 is registration process and the calling procedure Signalling exchange figure that calls out access device in prior art;
The structure chart that Fig. 3 is the call control device that provides in the embodiment of the present invention two;
The structure chart that Fig. 4 is the network equipment that provides in the embodiment of the present invention three;
The internal system Signalling exchange figure of Fig. 5 for providing in the embodiment of the present invention four;
Fig. 6 is the Signalling exchange figure of Voice over IP service protection mechanism in prior art.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, schematic description and description of the present invention is used for explaining the present invention, but not as a limitation of the invention.
Embodiment mono-: the embodiment of the present invention provides a kind of guard method of Voice over IP (VOIP) business of calling out access device, as shown in Figure 1.
This guard method can be applicable in protection group, and described protection group at least comprises interconnective the first call control device and the second call control device, and the all-calls control appliance in described protection group connects described calling access device.Protection group also claims backup group, is made up of a primary call control device and a backup call control appliance, also can be made up of a primary call control device and multiple backup call control appliance.Protection group can be connected with calling access device by convergent type switching equipment, and protection group is connected to the network simultaneously, and the each call control device in protection group interconnects.Conventionally, can connect multiple calling access devices below protection group, in this embodiment, only set forth a guard method of calling out the VOIP business of access device, other guard methods of calling out access devices are identical therewith.Call control device described in the embodiment of the present invention, refer to the equipment that there is IP routing function and there is VOIP service management and control ability, according to the different VOIP agreements in voice call network, call control device can be, as there is conversation initialized protocol (Session Initiation Protocol, SIP) the core I P multimedia system of registrar and call proxy server function (IP Multimedia Subsystem, IMS), there is the core side Softswitch of the gatekeeper function in agreement H.323, there is Media Gateway Controller (Media Gateway Controller, MGC) switching equipment of side MGCP (as MGCP or Megaco/H.248) function and there is couple in router (the Access Router of similar functions, AR).Calling access device described in the embodiment of the present invention, refer to the equipment with call function of supporting corresponding VOIP agreement, concrete according to the different VOIP protocol devices in voice call network, can be, as gateway device of the soft Phone of IP phone, the equipment (as IP group telephone) that possesses VOIP access capability or support VOIP, support VOIP agreement etc.In prior art, after calling access device is registered on call control device, its call request is by the call control device processing by being its registration.As an example of Session Initiation Protocol example (other VOIP protocol class seemingly), in prior art, concrete registration process and the signaling diagram of calling procedure are as shown in Figure 2, call out the operation conditions of access device periodic monitoring call control device, in the time noting abnormalities, need again again to register by the REGISTER in figure and 200K signaling to call control device for subsequent use.In the embodiment of the present invention, replace the call control device in Fig. 2 and realize corresponding function with protection group, being processed the business of protection group in protection group inside by IP routing protocol by the primary call control device in protection group.
In embodiments of the present invention, the order line that can provide by call control device or webmaster are configured the first call control device and the second call control device or more call control device, and these call control devices are configured in protection group.The method of configuration can be to utilize existing IP route redundancy protocol, as Virtual Router Redundacy Protocol, HSRP etc.Protection group after configuration has an IP address, and the IP address that this IP address can be certain call control device in protection group can be also other IP addresses, has a virtual MAC Address simultaneously.The calling access device connecting for this protection group; this protection group is equivalent to a virtual call control appliance; the IP address of protection group is the IP address of this virtual call control appliance; the virtual mac address of protection group is the MAC Address of this virtual call control appliance, therefore the call control device address of its collocating uplink is above-mentioned IP address.In protection group inside, mail to the message of this IP address or message by the primary call control device processing in protection group, call control device for subsequent use is in ready state, to not processing from the signaling outside protection group.In the time that protection group is enabled, all broadcasting packets of each equipment, can be then primary by the call control device of the priority value maximum of a configuration of election consulting tactical election, other be for subsequent use, can certainly be other election consulting tactical.
The guard method of the VOIP business of the calling access device of the embodiment of the present invention specifically comprises:
Step 101; the second call control device as the stand-by equipment in described protection group receives the message from the first call control device as host apparatus in described protection group, obtains the log-on message of the described calling access device carrying in described message in described protection group.Primary call control device in protection group, i.e. the first call control device, the call request after the registration request that responsible processing calling access device sends to protection group and registration complete.If call control device has also been enabled the function of authentication simultaneously, in the time of registration, also need to carry out authentication, to determine whether providing service to the calling access device of applying for the registration of, the process of authentication is prior art, no longer describes in detail.Primary call control device is often received a new registration request, completes after registration, log-on message can be sent to all backup call control appliances in protection group.Communication mode between active and standby call control device does not retrain herein, can expand IP route redundancy protocol and realize, and also can complete by self-defining communication mode.Optionally, in the notice message that can send at host apparatus, carry log-on message, also can send above-mentioned information by communication mode of self-defining, analogy host apparatus sends a VOICE_BACKUP message based on User Datagram Protoco (UDP) to stand-by equipment, carry foregoing and an incremented sequence number, after stand-by equipment is received, all the elements are preserved, and reply a bar response VOICE_BACKUP_ACK based on User Datagram Protoco (UDP), carry the sequence number of receiving, notice host apparatus has been received backup information and has preserved; If primary AR receives the VOICE_BACKUP_ACK of corresponding sequence number, finish alternately, otherwise primary AR regularly (such as 4 seconds) retransmits VOICE_BACKUP message, until receive VOICE_BACKUP_ACK or retransmit certain number of times (such as 3 times) and stop afterwards.About the content of log-on message, take Session Initiation Protocol as example, the partial content of calling out the mutual registration of access device and call control device and response signaling is as follows:
REGISTER?sip：10.71.44.35:5060SIP/2.0
Call-ID：4c9197107b94fb5f76ab7b603e49abf5@10.71.44.33
From：<sip:scscf.huawei.com>；tag＝60846f68
To：<sip:28781217@huawei.com>
Contact：<sip:scscf.huawei.com：5060；Dpt＝2894-4>；expires＝1200
Status-Line：SIP/2.0200OK
Call-ID：4c9197107b94fb5f76ab7b603e49abf5@10.71.44.33
From：<sip:scscf.huawei.com>；tag＝60846f68
To：<sip:28781217@huawei.com>；tag＝fe478ea1
Contact：<sip:scscf.huawei.com:5060；Dpt＝2894-4>；expires＝1200
Can find out from above signaling, log-on message generally comprises but is not limited to, the information (registered or unregistered) whether the mark (be generally telephone number, be the PublicID in signaling) of the calling access device of initiation registration request, contact address (the Contact header field content in signaling), login dialog information (Call-ID in signaling and From tag, to tag etc.) and this calling access device of this calling access device are registered.Registration process and the Session Initiation Protocol registration process of other VOIP agreement are similar, the content that log-on message comprises is also roughly the same, such as according to the mark that H.248 only need to call out access device with the log-on message of MGCP agreement, and H.323 comprise contact address and the last point identification (endpoint identity) of calling out access and penetrate barium in the log-on message of agreement.Optionally, in all log-on messages, can carry authentication information, be specially the described calling access device authentication challenge code that call control device produces in authentication process.All backup call control appliances in protection group, are the second call control device in the present embodiment, certainly can also comprise other backup call control appliances in described protection group, can receive described log-on message and store this log-on message.
Step 102, described the second call control device is monitored the state of described the first call control device, in the time detecting that described the first call control device breaks down, described the second call control device is using the IP address of described protection group as the IP address of self, send the free address resolution protocol message of the MAC Address of having carried described protection group to described calling access device, and become master state from stand-by state; Described the second call control device obtains from described calling access device or points to the call request of described calling access device, processes described Voice over IP business according to described call request and described log-on message.Primary call control device in protection group is that described the first call control device is while normally working; send notification packet every certain time interval; inform backup call control appliance in protection group its in normal work; backup call control appliance is received notification packet and is learnt that host apparatus is normal, continues to keep stand-by state.Described certain time interval is optional in the time that protection group configures, as 1 second, and 0.01 second etc. for another example.Backup call control appliance is not received notification packet within continuous several time intervals, such as not receiving in continuous 3 time intervals, thinks that primary call control device breaks down.Or host apparatus can send a specific message in the time exiting master state, as the notification packet that a priority is zero, inform the stand-by equipment in protection group, it has exited master state.When not receiving the notice message that host apparatus is working properly or received that host apparatus exits the notice message of master state in the time interval of setting, backup call control appliance, be described the second call control device in the present embodiment, become new primary call control device.Concrete, if only have a backup call control appliance in protection group, this backup call control appliance becomes master state from stand-by state, and outside timed sending notification packet.If there is two or more backup call control appliance in protection group, these backup call control appliances elect a new primary call control device by the election consulting tactical of IP routing protocol.Optionally, described election consulting tactical can be: in the time that primary call control device current in described protection group breaks down, become new primary call control device according to the backup call control appliance of the priority value maximum of described IP route redundancy protocol configuration; Or in the time that primary call control device current in described protection group breaks down, the backup call control appliance of the value maximum of IP address becomes new primary call control device.The second call control device, using the IP address of described protection group as the IP address of self, sends the free address resolution protocol message of the MAC Address of having carried described protection group, and becomes master state from stand-by state to described calling access device.Send described free address resolution protocol message and can be broadcast, this message has been carried the Virtual MAC of protection group, and this concrete message is to send take the virtual mac address of protection group as source MAC.This message can arrive each calling access device by convergent type switch, for calling out access device, the information of carrying in this message and the items of address analyzing protocol table of depositing before it does not have essence difference, and for convergent type switch, can learn the corresponding forwarding port of this virtual mac address by this message, transmit thereby upgrade, thereby guarantee that the message of later this Virtual MAC of sensing can successfully be forwarded to new host apparatus.In the present embodiment, described the second call control device becomes after primary call control device, the log-on message of the described calling access device sending according to described the first call control device receiving is before taken over this calling access device, be specially and take over the registration management of this calling access device, and process according to described log-on message the VOIP business that described calling access device is produced after by adapter.Concrete, described the second call control device, receiving from described calling access device or pointing to the call request of described calling access device, is processed described Voice over IP business according to described call request and described log-on message.Certainly, the second call control device becomes after primary call control device, and other that also simultaneously take over that protection group connects are called out access devices and process their VOIP business, identical with the mode of described calling access device, no longer describe in detail.Processing VOIP business that described calling access device produced after by adapter mainly comprises and receives the call request of described calling access device and be that it connects voice call by signaling, or even video calling, and be that it finishes call according to finishing call request by signaling; Certainly, also comprising according to the call request of pointing to this calling access device, is that it is connected by signaling, and finishes call according to finishing call request for it.
Optionally, when described the second call control device is after stand-by state becomes master state, can also be according to calling out the current VOIP business of access device described in described log-on message and call conversation information processing, the call conversation information of the current VOIP business of described calling access device that described call conversation information sends before breaking down for described the first call control device.Call conversation information refers to, set up the dialog information of call connection procedure, can be for using in the signaling that finishes this call, mainly comprise mark and the contact address of both call sides, and the corresponding information producing according to each VOIP agreement, as in SIP, also comprise call-id, from tag and to tag etc., certainly because stand-by equipment has backed up a part of information in the time backing up log-on message, host apparatus also can select only to send a part of described call conversation information, and the content before having sent in log-on message no longer sends.Described the first call control device is before breaking down, as primary call control device, described calling access device make a call or receipt of call success after, the call conversation information that is current VOIP business by this calling sends to backup call control appliance.Here the mode sending does not limit, and can be the message of IP routing protocol expansion, can be also other communication modes.After the end of conversation of described calling access device, send a message to backup call control appliance equally, inform that backup call control appliance removes described call conversation information.If when the first call control device is in the time breaking down, described calling access device is also in communication process, described the second call control device becomes primary call control device and takes over after described calling access device taking over described the first call control device, according to calling out the current VOIP business of access device described in described log-on message and call conversation information processing.Because described log-on message and call conversation information have all been stored in the second call control device and have suffered, can realize seamless pipe.The current VOIP business of the described calling access device of processing here, is mainly according to finishing call request, finishes current talking according to signaling for it.In general; only have the signaling message of registration process, foundation call connection procedure and end communication process need to pass through the call control device in protection group; and media message in the communication process call control device in can obstructed overprotection group; therefore in the time that protection group is carried out active and standby switching; in prior art, call out the protection mechanism that access device needs first dropped calls to re-register again; the calling access device of the present embodiment is without re-registering; primary call control device after switching can directly be taken over current call, therefore can not cause dropped calls.
The guard method of the VoIP business of the calling access device that the embodiment of the present invention discloses; in protection reversed process; call out access device without re-registering; primary call control device after switching can seamless pipe VOIP business; and can not cause dropped calls; therefore simplified the complexity that VoIP service protection is realized, speech quality is also protected, and has improved user's experience.Simultaneously; described guard method does not need to call out access device call control device is carried out to abnormality detection and corresponding masterslave switchover; do not need to call out two upper row addresses of access device configuration, reduced and called out the configuration requirement of access device, thereby reduced the cost of calling out access device yet.
Embodiment bis-: the embodiment of the present invention provides a kind of call control device, as shown in Figure 3.Receiver module, for receipt message; Memory module, for storing the first log-on message that the received message of described receiver module is carried, described the first log-on message is the log-on message of the first calling access device in protection group being connected with described call control device, and described protection group is the protection group at described call control device place; Processing module, be used for judging whether described call control device need to become master state from stand-by state, if, IP address using the IP address of described protection group as described call control device, send the free address resolution protocol message of the MAC Address of having carried described protection group to described the first calling access device, and described call control device is set to master state; Obtain from described calling access device or point to the call request of described calling access device, processing the Voice over IP business of described calling access device according to described call request and described the first log-on message; Described processing module is connected with described receiver module and described memory module.
Optionally, described processing module, also for judging that whether described call control device need to become non-active status from master state, if so, stops process IP carry voice traffic.Optionally, described memory module, the call conversation information of also carrying for storing the received message of described receiver module, described call conversation information is the call conversation information of the current Voice over IP business of described calling access device; Described processing module, also for being set to after master state at described call control device, according to current Voice over IP business described in described the first log-on message from described memory module and described call conversation information processing.Optionally, described processing module, also for when described call control device is during in master state, call out second log-on message of access device in described protection group according to generating described second from the second login request message of calling out access device being connected with described call control device, and process the described second Voice over IP business of calling out access device according to described the second log-on message, generate the notice message that carries described the second log-on message; Described memory module, also for storing described the second log-on message; Described call control device also comprises sending module, sends described notice message for other call control devices to described protection group.Further, described for judging whether described call control device need to become master state from stand-by state, be specifically as follows: in the time that primary call control device current in described protection group breaks down, become new primary call control device according to the backup call control appliance of the priority value maximum of described IP route redundancy protocol configuration; Or in the time that primary call control device current in described protection group breaks down, the backup call control appliance of the value maximum of IP address becomes new primary call control device.
Concrete, memory module is for the first received log-on message of storing received module, the first log-on message generally comprises but is not limited to, take Session Initiation Protocol as example, the information (registered or unregistered) whether the mark (be generally telephone number, be the PublicID in signaling) of the calling access device of initiation registration request, contact address (the Contact header field content in signaling), login dialog information (Call-ID in signaling and From tag, to tag etc.) and this calling access device of this calling access device are registered.Registration process and the Session Initiation Protocol registration process of other VOIP agreement are similar, the content that log-on message comprises is also roughly the same, such as H.248 basis only need to call out the mark of access device with the log-on message of MGCP agreement, and H.323 in the log-on message of agreement, comprise last point identification (endpointidentity).Optionally, in all log-on messages, can carry authentication information, be specially the described calling access device authentication challenge code that call control device produces in authentication process.Protection group is in VOIP networking, to protect the protection mechanism of VoIP business, and concrete composition and annexation are identical with the protection group in embodiment mono-, no longer describes in detail.Processing module; for judging that the method whether described call control device need to become master state from stand-by state is specifically as follows; primary call control device in protection group at regular intervals interval will send notification packet other equipment in protection group of informing and self normally works; if if the backup call control appliance in protection group is not received notification packet within the time in the time interval of regulation number, select new primary call control device according to corresponding agreement by election consulting tactical.Or; the notice message that stand-by equipment can be zero according to the priority that in the received protection group of receiver module, host apparatus sends; think that this host apparatus has exited master state, judge whether it need to become master state from stand-by state according to corresponding agreement.If only have stand-by equipment of the second call control device, can directly become host apparatus.Finding described call control device when described processing module need to be when stand-by state becomes master state; IP address using the IP address of described protection group as described call control device; send the free address resolution protocol message of the MAC Address of having carried described protection group to described the first calling access device, and described call control device is set to master state.Concrete, free address resolution protocol message has been carried the Virtual MAC of protection group, and this concrete message is to send take the virtual mac address of protection group as source MAC.This message make for connecting protection group and each calling access device convergent type switch can by this information updating, it be transmitted, thereby guarantee in the new host apparatus that is forwarded to protection group that message after this can be correct.Simultaneously, take over described first according to the first log-on message and call out access device, be specially the registration management that access device is called out in management described first, obtain from described calling access device or point to the call request of described calling access device, and processing described first according to described the first log-on message and call out the Voice over IP business that access device is produced after by adapter.Optionally; becoming after host apparatus; processing module needs regularly to generate the first notice message; be used for informing other call control devices its in normal work; if in former protection group, only have one for subsequent use; it transfers to when primary and has not had other stand-by equipments in protection group, can not send notice message.Optionally, processing module is also for judging that whether described call control device need to become non-active status from master state, if so, stops process IP carry voice traffic.Non-active status is other states except master state, according to the difference of route redundancy protocol, can comprise stand-by state, init state, or can comprise stand-by state, init state and dialogue state.Optionally, described call control device is being taken over after described the first calling access device, if finding described the first calling access device converses, there is current Voice over IP business, according to the current Voice over IP business of the first calling access device described in described the first log-on message from described memory module and described call conversation information processing.As an example of Session Initiation Protocol example (other agreements are similar), call conversation information spinner will include but not limited to: Call-ID and From tag, to tag etc. in the ID (being generally telephone number, i.e. PublicID in signaling) of calling both sides, contact address and the dialog procedure of calling both sides.Described call control device is being taken over after the first calling access device, if find not only to exist described first log-on message of described the first calling access device, and find that described first calls out the call conversation information of access device, illustrate described first call out access device converse, so after its end of conversation by signaling be its finish converse.In general; only have the signaling message of registration process, foundation call connection procedure and end communication process need to pass through the call control device in protection group; and media message in the communication process call control device in can obstructed overprotection group; therefore in the time that protection group is carried out active and standby switching; in prior art, call out the protection mechanism that access device needs first dropped calls to re-register again; the calling access device of the present embodiment is without re-registering; primary call control device after switching can directly be taken over current call, therefore can not cause dropped calls.Optionally, described processing module also can be used in the time of master state, for its registration, generates the second log-on message, and process the Voice over IP business producing after its registration according to the newly add second login request message of calling out access device.The notice message by the second log-on message is carried in generation, and sends to other call control devices in protection group by sending module, for protect the use of switching in the time that described call control device breaks down.
Call control device described in the embodiment of the present invention, according to the different VOIP agreements in voice call network, call control device can be, as there is conversation initialized protocol (Session InitiationProtocol, SIP) core I P multimedia system (the IPMultimedia Subsystem of registrar and call proxy server function, IMS), there is the core side Softswitch of the gatekeeper function in agreement H.323, there is Media Gateway Controller (Media Gateway Controller, MGC) switching equipment of side MGCP (as MGCP or Megaco/H.248) function and there is couple in router (the Access Router of similar functions, AR).
The call control device that the embodiment of the present invention discloses; in protection reversed process; the calling access device that it connects is without re-registering; can this calling access device of seamless pipe VOIP business after switching; and can not cause dropped calls; therefore simplified the complexity that VoIP service protection is realized, speech quality is also protected, and has improved user's experience.Simultaneously, described call control device does not need to call out access device it is carried out to abnormality detection and corresponding masterslave switchover, do not need to call out two upper row addresses of access device configuration, reduced and called out the configuration requirement of access device, thereby reduced the cost of calling out access device yet.
Embodiment tri-: the embodiment of the present invention also provides a kind of network equipment, as shown in Figure 4, comprises processor, memory, transceiver, wherein processor and rear both couplings.This network equipment can be for carrying out as embodiment mono-method.Concrete, transceiver is for receiving from the message of this network equipment outside and outwards sending message, and the function of described transceiver also can be replaced by a receiver and a transmitter, and wherein receiver is used for receiving message, and transmitter is used for sending message; Memory, for storage information; Processor is for the message receiving is processed, concrete, has as the function of processing module in embodiment bis-.
This processor can be general processor, and as integrated circuit (IC), the program of its execution is stored in memory so; This processor can be also application-specific integrated circuit (ASIC), as ASIC (Application SpecificIntegrated Circuit) or FPGA (Field-Programmable gate array), or other similar functions devices.
The network equipment that the embodiment of the present invention discloses; in protection reversed process; the calling access device that it connects is without re-registering; can this calling access device of seamless pipe VOIP business after switching; and can not cause dropped calls; therefore simplified the complexity that VoIP service protection is realized, speech quality is also protected, and has improved user's experience.Simultaneously, described call control device does not need to call out access device it is carried out to abnormality detection and corresponding masterslave switchover, do not need to call out two upper row addresses of access device configuration, reduced and called out the configuration requirement of access device, thereby reduced the cost of calling out access device yet.
Embodiment tetra-: the embodiment of the present invention provides a kind of Voice over IP system.
Described system comprises interconnective protection group and calls out access device; Described protection group at least comprises interconnective as the first call control device of host apparatus with as the second call control device of stand-by equipment; Described the first call control device, for generating log-on message according to the registration request from described calling access device, after succeeding in registration, according to from described calling access device or point to the call request of this calling access device, and described log-on message is processed the Voice over IP business of described calling access device; Generation carries the first message of described registration message, and other call control devices in described protection group send described the first message; During it is as host apparatus, timed sending is used for noticing the second message of its operating state, and/or, in the time that becoming non-active status, master state sends the 3rd message at it; Described the second call control device, for receiving described the first message and storing the described log-on message that described the first message is carried; Monitor the state of described the first call control device according to described the second message and/or described the 3rd message, in the time detecting that described the first call control device breaks down, using the IP address of described protection group as the IP address of self, send the free address resolution protocol message of the MAC Address of having carried described protection group to described calling access device, and become master state from stand-by state; Obtain from described calling access device or point to the call request of described calling access device, processing described Voice over IP business according to described call request and described log-on message.
Optionally, described the second call control device, also for becoming after master state at it, take over the current Voice over IP business of described calling access device according to described log-on message and call conversation information, the call conversation information of the current Voice over IP business of described calling access device that described call conversation information sends before it breaks down for described the first call control device.
In a word; the present embodiment protection group is made up of according to IP route redundancy protocol the call control device disclosing in multiple embodiment bis-; according to the guard method disclosing in embodiment mono-; Voice over IP business to the calling access device under this protection group is protected; take Session Initiation Protocol as example; concrete Signalling exchange figure in this system as shown in Figure 5; in figure only to only have the protection group of two call control devices as example; in fact; protection group can comprise plural call control device, and these equipment comprise a host apparatus and multiple stand-by equipment.The detail of the equipment in this protection group is referring to embodiment bis-, and this protection group realizes the method for Voice over IP service protection referring to embodiment mono-, no longer describes in detail.
In the protection mechanism of the prior art Session Initiation Protocol in Fig. 6; call out access device and need regularly to send OPTIONS message monitoring standby usage state; once host apparatus breaks down, call out access device and initiatively initiate active and standby switching, and again initiate registration to stand-by equipment.Compared with prior art; calling access device descending in the system of the embodiment of the present invention only need be registered once, in the time that the host apparatus in protection group breaks down, calls out access device without registration again; protection group inside is carried out active and standby switching voluntarily, and calling out access device even can not perception.Meanwhile, call out the current calling of access device by backup, can guarantee to call out access device and converse and do not interrupt in the time of the active and standby switching of protection group.
The protection group of the VoIP business that the embodiment of the present invention discloses; in protection reversed process; call out access device without re-registering; primary call control device after switching can seamless pipe VOIP business; and can not cause dropped calls; therefore simplified the complexity that VoIP service protection is realized, speech quality is also protected, and has improved user's experience.Simultaneously; described protection group does not need to call out access device call control device is carried out to abnormality detection and corresponding masterslave switchover; do not need to call out two upper row addresses of access device configuration, reduced and called out the configuration requirement of access device, thereby reduced the cost of calling out access device yet.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize with hardware, or firmware realization, or their compound mode realizes.In the time using software to realize, one or more instructions or the code that above-mentioned functions can be stored in computer-readable medium or on computer-readable medium transmit.Computer-readable medium comprises computer-readable storage medium and communication media, and wherein communication media comprises any medium of being convenient to transmit from a place to another place computer program.Storage medium can be any usable medium that computer can access.As example but be not limited to: computer-readable medium can comprise RAM, ROM, EEPROM, CD-ROM or other optical disc storage, magnetic disk storage medium or other magnetic storage apparatus or can be used in carry or store the expectation with instruction or data structure form program code and can be by any other medium of computer access.In addition.Any connection can be suitable become computer-readable medium.For example, if software be use coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or the wireless technology such as infrared ray, radio and microwave from website, server or the transmission of other remote source, so coaxial cable, optical fiber cable, twisted-pair feeder, DSL or the wireless technology such as infrared ray, wireless and microwave be included under in the photographic fixing of medium.As used in the present invention, dish (Disk) and dish (disc) comprise compression laser disc (CD), laser dish, laser disc, digital universal laser disc (DVD), floppy disk and Blu-ray Disc, the copy data of the common magnetic of its mid-game, dish carrys out the copy data of optics with laser.Within combination above also should be included in the protection range of computer-readable medium.
In a word, the foregoing is only the preferred embodiment of technical solution of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the guard method of a Voice over IP business; be applied in Voice over IP service protection group; described protection group at least comprises interconnective the first call control device and the second call control device; all-calls control appliance in described protection group connects calls out access device; the Voice over IP business that described Voice over IP business is described calling access device; it is characterized in that, described guard method comprises:
The second call control device as the stand-by equipment in described protection group receives the message from the first call control device as host apparatus in described protection group, obtains the log-on message of the described calling access device carrying in described message in described protection group;
Described the second call control device is monitored the state of described the first call control device, in the time detecting that described the first call control device breaks down, described the second call control device is using the IP address of described protection group as the IP address of self, send the free address resolution protocol message of the MAC Address of having carried described protection group to described calling access device, and become master state from stand-by state;
Described the second call control device obtains from described calling access device or points to the call request of described calling access device, processes described Voice over IP business according to described call request and described log-on message.
2. guard method according to claim 1, is characterized in that, described guard method also comprises:
When described the second call control device is after stand-by state becomes master state, according to calling out the current Voice over IP business of access device described in described log-on message and call conversation information processing, the call conversation information of the current Voice over IP business of described calling access device that described call conversation information sends before it breaks down for described the first call control device.
3. according to guard method described in claim 1 or 2, it is characterized in that, described log-on message comprises: the mark of described calling access device and/or authentication challenge code.
4. a call control device, is characterized in that, described call control device comprises:
Receiver module, for receipt message;
Memory module, for storing the first log-on message that the received message of described receiver module is carried, described the first log-on message is the log-on message of the first calling access device in protection group being connected with described call control device, and described protection group is the protection group at described call control device place;
Processing module, be used for judging whether described call control device need to become master state from stand-by state, if, IP address using the IP address of described protection group as described call control device, send the free address resolution protocol message of the MAC Address of having carried described protection group to described the first calling access device, and described call control device is set to master state; Obtain from described calling access device or point to the call request of described calling access device, processing the Voice over IP business of described calling access device according to described call request and described the first log-on message;
Described processing module is connected with described receiver module and described memory module.
5. call control device according to claim 4, is characterized in that:
Described processing module, also for judging that whether described call control device need to become non-active status from master state, if so, stops process IP carry voice traffic.
6. according to call control device described in claim 4 or 5, it is characterized in that:
Described memory module, the call conversation information of also carrying for storing the received message of described receiver module, described call conversation information is the call conversation information of the current Voice over IP business of described calling access device;
Described processing module, also for being set to after master state at described call control device, according to current Voice over IP business described in described the first log-on message from described memory module and described call conversation information processing.
7. call control device according to claim 6, is characterized in that:
Described processing module, also for when described call control device is during in master state, call out second log-on message of access device in described protection group according to generating described second from the second login request message of calling out access device being connected with described call control device, and process the described second Voice over IP business of calling out access device according to described the second log-on message, generate the notice message that carries described the second log-on message;
Described memory module, also for storing described the second log-on message;
Described call control device also comprises sending module, also sends described notice message for other call control devices to described protection group.
8. a Voice over IP system, is characterized in that:
Described system comprises interconnective protection group and calls out access device;
Described protection group at least comprises interconnective as the first call control device of host apparatus with as the second call control device of stand-by equipment;
Described the first call control device, for generating log-on message according to the registration request from described calling access device, after succeeding in registration, according to from described calling access device or point to the call request of this calling access device, and described log-on message is processed the Voice over IP business of described calling access device; Generation carries the first message of described registration message, and other call control devices in described protection group send described the first message; During it is as host apparatus, timed sending is used for noticing the second message of its operating state, and/or, in the time that becoming non-active status, master state sends the 3rd message at it;
Described the second call control device, for receiving described the first message and storing the described log-on message that described the first message is carried; Monitor the state of described the first call control device according to described the second message and/or described the 3rd message, in the time detecting that described the first call control device breaks down, using the IP address of described protection group as the IP address of self, send the free address resolution protocol message of the MAC Address of having carried described protection group to described calling access device, and become master state from stand-by state; Obtain from described calling access device or point to the call request of described calling access device, processing described Voice over IP business according to described call request and described log-on message.
9. system according to claim 8, is characterized in that:
Described the second call control device, also for becoming after master state at it, take over the current Voice over IP business of described calling access device according to described log-on message and call conversation information, the call conversation information of the current Voice over IP business of described calling access device that described call conversation information sends before it breaks down for described the first call control device.
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