CN103795878B - A kind of guard method of Voice over IP business, equipment and system - Google Patents
A kind of guard method of Voice over IP business, equipment and system Download PDFInfo
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- CN103795878B CN103795878B CN201210435775.2A CN201210435775A CN103795878B CN 103795878 B CN103795878 B CN 103795878B CN 201210435775 A CN201210435775 A CN 201210435775A CN 103795878 B CN103795878 B CN 103795878B
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Abstract
The invention provides a kind of guard method of Voice over IP business, equipment and system, be applied to communication technical field.Described guard method comprises: backup call control appliance receives and the log-on message of stored calls access device in protection group; when the primary call control device in protection group breaks down, take over the Voice over IP business of described calling access device according to this log-on message.The guard method that the present invention discloses; in pretection switch process; re-register without the need to calling out access device; can this calling access device of seamless pipe VOIP business after switching; and can not dropped calls be caused; therefore simplifying the complexity of VoIP service protection realization, speech quality is also protected, and improves Consumer's Experience.
Description
Technical field
The present invention relates to technical field of photo communication, be specifically related to a kind of guard method of Voice over IP business, equipment and system.
Background technology
Along with the development of IP network, the use of Voice over IP (VoiceoverInternetProtocol, VoIP) is more and more general.Voip network comprises call control device and calling access device, in order to ensure stable, the reliability of business, is also configured with backup call control appliance, for the bearer service when primary call control device breaks down.Calling access device, needs the running status monitoring primary call control device at any time, when finding that primary call control device is unavailable, must again be connected with backup call control appliance, ensures normally carrying out of follow-up business.
But, the active-standby switch of call control device is initiated primarily of calling access device and completes, this just requires to call out the device address that access device configures multiple call control device, and calls out the running status of the primary call control device of the automatic monitoring of access device needs and carry out corresponding active-standby switch as required.To the cost of calling access device be increased in the function of calling access device configuration active-standby switch, in fact, have a lot of calling access device not support these functions in the market.When the primary call control device be connected with the calling access device not configuring active-standby switch function breaks down, communication link cannot realize masterslave switchover, occur service disconnection.
Summary of the invention
For the guard method solving existing ip voice bearer service is high to calling access device configuration requirement, and the problem of protected effect difference, embodiments provide a kind of guard method of ip voice bearer service, equipment and system, 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 first call control device and the second call control device, all-calls control appliance in described protection group connects calling access device, described Voice over IP business is the Voice over IP business of 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 described calling access device in described protection group carried in described message, the state of described first call control device of described second call control device monitoring, when detecting that described first call control device breaks down, described second call control device is using the IP address of the IP address of described protection group as self, send the free address resolution protocol message carrying the MAC Address of described protection group to described calling access device, and become master state from stand-by state, described second call control device obtains from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.
In the first possible implementation of first aspect, when described second call control device becomes after master state from stand-by state, the Voice over IP business that access device is current is called out, the call conversation information of the Voice over IP business that the described calling access device that described call conversation information sends before it breaks down for described first call control device is current according to described log-on message and call conversation information processing.
In the implementation that the second of first aspect is possible, 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, provide a kind of call control device, described call control device comprises: receiver module, for receipt message; Memory module, for storing the first log-on message carried in the message received by described receiver module, described first log-on message be connected with described call control device first call out the log-on message of access device in protection group, described protection group is the protection group at described call control device place; Processing module, for judging that described call control device becomes master state the need of from stand-by state, if, then using the IP address of the IP address of described protection group as described call control device, send to described first calling access device the free address resolution protocol message carrying the MAC Address of described protection group, and described call control device is set to master state; Obtain from described calling access device or the call request pointing to described calling access device, according to described call request and described first log-on message process, call out the Voice over IP business of access device; Described processing module is connected with described receiver module and described memory module.
In the first possible implementation of second aspect, described processing module, also for judging that described call control device becomes non-active status the need of from master state, if so, then stops process IP carry voice traffic.
In the implementation that the second of second aspect is possible, described memory module, also for storing the call conversation information of carrying in the message received by 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 after described call control device is set to master state, according to Voice over IP business current described in from described first log-on message of 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 in master state, generate described second according to the login request message of calling out access device from be connected with described call control device second and call out second log-on message of access device in described protection group, and according to described second log-on message process the Voice over IP business of the second calling access device, generate and carry the notice message of described second log-on message; Described memory module, also for storing described second log-on message; Described call control device also comprises sending module, also for sending described notice message to other call control devices in described protection group.
According to the third aspect of the embodiment of the present invention, additionally provide a kind of Voice over IP system, described system comprises interconnective protection group and calling access device; Described protection group at least comprises interconnective the first call control device as host apparatus and the second call control device as stand-by equipment; Described first call control device, for generating log-on message according to the registration request from described calling access device, after succeeding in registration, basis is from described calling access device or the call request pointing to this calling access device, and calls out the Voice over IP business of access device described in described log-on message process; Generate the first message carrying described registration message, and send described first message to other call control devices in described protection group; During it is as host apparatus, timed sending is for noticing the second message of its operating state, and/or, send the 3rd message when it becomes non-active status from master state; Described second call control device, for receiving described first message and storing the described log-on message carried in described first message; The state of described first call control device is monitored according to described second message and/or described 3rd message, when detecting that described first call control device breaks down, using the IP address of the IP address of described protection group as self, send the free address resolution protocol message carrying the MAC Address of described protection group to described calling access device, and become master state from stand-by state; Obtain from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.
In the first possible implementation of the third aspect, described second call control device, also for after it becomes master state, the current Voice over IP business of described calling access device is taken over, the call conversation information of the Voice over IP business that the described calling access device that described call conversation information sends before it breaks down for described first call control device is current according to described log-on message and call conversation information.
The guard method of the VoIP business of the calling access device disclosed according to the embodiment of the present invention first and second and three aspects, equipment and system; in pretection switch process; calling access device is without the need to re-registering; primary call control device after switching can seamless pipe VOIP business; and can not dropped calls be caused; therefore simplifying the complexity of VoIP service protection realization, speech quality is also protected, and improves Consumer's Experience.Simultaneously, calling access device is not needed to carry out abnormality detection and corresponding masterslave switchover to call control device, do not need calling access device to configure two upper row addresses, reduce the configuration requirement of calling access device, thus reduce the cost of calling 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 access device Voice over IP service protecting method in the embodiment of the present invention one;
Fig. 2 is the registration process and the calling procedure Signalling exchange figure that call out access device in prior art;
The structure chart of call control device of Fig. 3 for providing in the embodiment of the present invention two;
The structure chart of network equipment of Fig. 4 for providing 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 clearly understand, 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 for explaining the present invention, but not as a limitation of the invention.
Embodiment one: the embodiment of the present invention provides a kind of guard method of calling out Voice over IP (VOIP) business of access device, as shown in Figure 1.
This guard method can be applicable in protection group, and described protection group at least comprises interconnective 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 each call control device in protection group is interconnected.Usually, can connect multiple calling access device below protection group, in this embodiment, only set forth the guard method of the VOIP business of a calling access device, the guard method of other calling access devices is identical therewith.Call control device described in the embodiment of the present invention, refer to there is IP routing function and the equipment with VOIP traffic control and administration ability, according to the different VOIP agreements in voice call network, call control device can be, as having conversation initialized protocol (SessionInitiationProtocol, SIP) the core I P multimedia system (IPMultimediaSubsystem of registrar and call proxy server function, IMS), there is the core side Softswitch of the gatekeeper function in H.323 agreement, there is Media Gateway Controller (MediaGatewayController, MGC) side MGCP (as MGCP or Megaco/H.248) function switching equipment and there is the couple in router (AccessRouter of similar functions, AR).Calling access device described in the embodiment of the present invention, refer to the equipment with call function supporting corresponding VOIP agreement, concrete according to the different VOIP protocol devices in voice call network, can be, as IP phone, the equipment (as IP group telephone) possessing VOIP access capability or the soft Phone of support VOIP, the gateway device supporting VOIP agreement etc.In prior art, calling is after access device registers on call control device, and its call request is by by the call control device process of registering for it.For Session Initiation Protocol (other VOIP protocol class seemingly), in prior art, concrete registration process and the signaling diagram of calling procedure are as shown in Figure 2, the operation conditions of calling access device periodic monitoring call control device, when an abnormality is discovered, then need again again to be registered by REGISTER and the 200K signaling in figure to call control device for subsequent use.In the embodiment of the present invention, replace the call control device in Fig. 2 with protection group and realize corresponding function, inner by the business of IP routing protocol by the primary call control device process protection group in protection group in protection group.
In embodiments of the present invention, the order line that can be provided by call control device or webmaster are configured the first call control device and the second call control device or more call control device, are configured in protection group by these call control devices.The method of configuration can be utilize existing IP route redundancy protocol, as Virtual Router Redundacy Protocol, HSRP etc.Protection group after configuration has an IP address, and this IP address can be the IP address of certain call control device in protection group, also can be other IP addresses, has a virtual MAC Address simultaneously.For the calling access device that this protection group connects; 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.Inner in protection group, mail to the message of this IP address or message by the primary call control device process in protection group, call control device for subsequent use is in ready state, does not process from the signaling outside protection group.When protection group is enabled, each equipment all broadcasting packets, the call control device then priority value configured can being elected maximum by election consulting tactical is primary, 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 described calling access device in described protection group carried in described message.Primary call control device in protection group, i.e. the first call control device, be responsible for the call request after registration request that process calling access device sends to protection group and registration complete.If call control device also enables the function of authentication simultaneously, then also need to carry out authentication when registering, to determine whether that the calling access device to applying for the registration of provides service, the process of authentication is prior art, no longer describes in detail.Primary call control device often receives a new registration request, after the registration is finished, log-on message can be sent to all backup call control appliances in protection group.Communication mode herein between active and standby call control device does not retrain, and easily extensible IP route redundancy protocol realizes, and also can complete by self-defining communication mode.Optionally, log-on message is carried in the notice message that can send at host apparatus, also above-mentioned information can be sent by self-defining communication mode, 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 receives, all the elements are preserved, and reply a bar response VOICE_BACKUP_ACK based on User Datagram Protoco (UDP), carry the sequence number received, notice host apparatus has received backup information and has preserved; If primary AR receives the VOICE_BACKUP_ACK of corresponding sequence number, then terminate alternately, otherwise primary AR regularly (such as 4 seconds) retransmits VOICE_BACKUP message, stop until receiving VOICE_BACKUP_ACK or retransmit certain number of times (such as 3 times).About the content of log-on message, for Session Initiation Protocol, the partial content of calling access device and the mutual registration of call control device and response signaling is as follows:
REGISTERsip：10.71.44.35:5060SIP/2.0
Call-ID：4c9197107b94fb5f76ab7b603e49abf510.71.44.33
From：<sip:scscf.huawei.com>；tag＝60846f68
To：<sip:28781217huawei.com>
Contact：<sip:scscf.huawei.com：5060；Dpt＝2894-4>；expires＝1200
Status-Line：SIP/2.0200OK
Call-ID：4c9197107b94fb5f76ab7b603e49abf510.71.44.33
From：<sip:scscf.huawei.com>；tag＝60846f68
To：<sip:28781217huawei.com>；tag＝fe478ea1
Contact：<sip:scscf.huawei.com:5060；Dpt＝2894-4>；expires＝1200
As can be seen 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, the contact address (the Contact header field content in signaling) of this calling access device, login dialog information (Call-ID and Fromtag in signaling, totag etc.) and 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 H.248 only to need the mark of calling out access device with the log-on message of MGCP agreement, and comprise contact address and the last point identification (endpointidentity) that barium is penetrated in calling access in the log-on message of H.323 agreement.Optionally, in all log-on messages, can authentication information be carried, 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, the state of described first call control device of described second call control device monitoring, when detecting that described first call control device breaks down, described second call control device is using the IP address of the IP address of described protection group as self, send the free address resolution protocol message carrying the MAC Address of described protection group to described calling access device, and become master state from stand-by state; Described second call control device obtains from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.When primary call control device in protection group and described first call control device normally work; notification packet is sent 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 then learnt that host apparatus is normal, then continue to keep stand-by state.Described certain time interval is optional when protection group configures, as 1 second, and 0.01 second etc. for another example.Backup call control appliance does not receive notification packet within continuous several time interval, does not receive, then think that primary call control device breaks down in such as continuous 3 time intervals.Or host apparatus can send a specific message when exiting master state, if a priority is the notification packet of zero, inform the stand-by equipment in protection group, it exits master state.When not receiving host apparatus notice message working properly or have received the notice message that host apparatus exits master state in the time interval in setting, backup call control appliance, be described 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, then 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, then 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: when primary call control device current in described protection group breaks down, and becomes new primary call control device according to the backup call control appliance that the priority value of described IP route redundancy protocol configuration is maximum; Or when primary call control device current in described protection group breaks down, the backup call control appliance that the value of IP address is maximum becomes new primary call control device.Second call control device, using the IP address of the IP address of described protection group as self, sends the free address resolution protocol message carrying the MAC Address of described protection group, and becomes master state from stand-by state to described calling access device.Sending described free address resolution protocol message can be broadcast, and this message carries the Virtual MAC of protection group, and this concrete message is for source MAC sends with the virtual mac address of protection group.This message can arrive each calling access device by convergent type switch, for calling access device, the information of carrying in this message and the items of address analyzing protocol table deposited before it does not have essence difference, and for convergent type switch, the forwarding port that can learn corresponding to this virtual mac address by this message, thus renewal is transmitted, thus ensure that the message of later this Virtual MAC of sensing can successfully be forwarded to new host apparatus.In the present embodiment, after described second call control device becomes primary call control device, the log-on message of the described calling access device sent according to described first call control device received before takes over this calling access device, be specially the registration management of this calling access device of adapter, and call out according to described log-on message process access device by after adapter the VOIP business that produces.Concrete, described second call control device is receiving from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.Certainly, after the second call control device becomes primary call control device, also other calling access devices of connecting of adapter protection group simultaneously process their VOIP business, identical with the mode of described calling access device, no longer describe in detail.Process described calling access device by after adapter the VOIP business that produces mainly comprise the call request that receives described calling access device and be that it connects voice call by signaling, or even video calling, and according to terminating call request by signaling for it terminates call; Certainly, also comprising the call request according to pointing to this calling access device, by signaling for it is connected, and terminating call according to end call request for it.
Optionally, when described second call control device becomes after master state from stand-by state, the current VOIP business of access device can also be called out according to described log-on message and call conversation information processing, described call conversation information for described first call control device break down before the call conversation information of the current VOIP business of the described calling access device that sends.Call conversation information refers to, set up the dialog information of call connection process, may be used for using in the signaling terminating this call, mainly comprise mark and the contact address of both call sides, and according to the corresponding information that each VOIP agreement produces, as in SIP, also comprise call-id, fromtag and totag etc., certainly because stand-by equipment has backed up a part of information when backing up log-on message, host apparatus also can be selected only to send a part of described call conversation information, and the content before sent in log-on message no longer sends.Described first call control device is before breaking down, as primary call control device, make a call at described calling access device or after receipt of call success, the call conversation information of this calling and current VOIP business sent to backup call control appliance.Here the mode sent does not limit, and can be the message of IP routing protocol expansion, also can be other communication modes.After the end of conversation of described calling access device, send a message to backup call control appliance equally, inform that described call conversation information removed by backup call control appliance.If when the first call control device is when breaking down, described calling access device is also in communication process, then described second call control device becomes primary call control device and after taking over described calling access device, calls out the VOIP business that access device is current according to described log-on message and call conversation information processing taking over described first call control device.Because described log-on message and call conversation information have all been stored in the second call control device and have suffered, therefore can realize seamless pipe.Here the VOIP business that process described calling access device is current, is mainly according to end call request, according to signaling for it terminates current talking.In general; only having registration process, setting up call connection process and terminating the signaling message of communication process needs by the call control device in protection group; and media message in communication process can call control device in obstructed overprotection group; therefore when protection group carries out active-standby switch; the protection mechanism that re-registers again of first dropped calls is needed compared to calling out access device in prior art; the calling access device of the present embodiment is without the need to re-registering; primary call control device after switching can directly take 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 pretection switch process; calling access device is without the need to re-registering; primary call control device after switching can seamless pipe VOIP business; and can not dropped calls be caused; therefore simplifying the complexity of VoIP service protection realization, speech quality is also protected, and improves Consumer's Experience.Simultaneously; described guard method does not need calling access device to carry out abnormality detection and corresponding masterslave switchover to call control device; do not need calling access device to configure two upper row addresses, reduce the configuration requirement of calling access device, thus reduce the cost of calling access device yet.
Embodiment two: 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 carried in the message received by described receiver module, described first log-on message be connected with described call control device first call out the log-on message of access device in protection group, described protection group is the protection group at described call control device place; Processing module, for judging that described call control device becomes master state the need of from stand-by state, if, then using the IP address of the IP address of described protection group as described call control device, send to described first calling access device the free address resolution protocol message carrying the MAC Address of described protection group, and described call control device is set to master state; Obtain from described calling access device or the call request pointing to described calling access device, according to described call request and described first log-on message process, call out the Voice over IP business of access device; Described processing module is connected with described receiver module and described memory module.
Optionally, described processing module, also for judging that described call control device becomes non-active status the need of from master state, if so, then stops process IP carry voice traffic.Optionally, described memory module, also for storing the call conversation information of carrying in the message received by 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 after described call control device is set to master state, according to Voice over IP business current described in from described first log-on message of described memory module and described call conversation information processing.Optionally, described processing module, also for when described call control device is in master state, generate described second according to the login request message of calling out access device from be connected with described call control device second and call out second log-on message of access device in described protection group, and according to described second log-on message process the Voice over IP business of the second calling access device, generate and carry the notice message of described second log-on message; Described memory module, also for storing described second log-on message; Described call control device also comprises sending module, for sending described notice message to other call control devices in described protection group.Further, described for judging that described call control device becomes master state the need of from stand-by state, be specifically as follows: when primary call control device current in described protection group breaks down, become new primary call control device according to the backup call control appliance that the priority value of described IP route redundancy protocol configuration is maximum; Or when primary call control device current in described protection group breaks down, the backup call control appliance that the value of IP address is maximum becomes new primary call control device.
Concrete, memory module is for storing the first log-on message received by receiver module, first log-on message generally comprises but is not limited to, for Session Initiation Protocol, 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, the contact address (the Contact header field content in signaling) of this calling access device, login dialog information (Call-ID and Fromtag in signaling, totag etc.) and 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 H.248 only to need the mark of calling out access device with the log-on message of MGCP agreement, and comprise last point identification (endpointidentity) in the log-on message of H.323 agreement.Optionally, in all log-on messages, can authentication information be carried, be specially the described calling access device authentication challenge code that call control device produces in authentication process.Protection group is protect the protection mechanism of VoIP business in VOIP networking, concrete composition and annexation identical with the protection group in embodiment one, no longer describe in detail.Processing module; for judging that described call control device is specifically as follows the need of the method being become master state from stand-by state; primary call control device in protection group at regular intervals interval will send notification packet and informs that other equipment in protection group self normally work; if if the backup call control appliance in protection group does not receive notification packet within the time in the time interval of regulation number, then select new primary call control device according to corresponding agreement by election consulting tactical.Or; stand-by equipment can host apparatus sends in the protection group received by receiver module priority be the notice message of zero; then think that this host apparatus exits master state, then judge that it becomes master state according to corresponding agreement the need of from stand-by state.If only have the second call control device stand-by equipment, then directly can become host apparatus.When described processing module finds that described call control device needs to become master state from stand-by state; then using the IP address of the IP address of described protection group as described call control device; send to described first calling access device the free address resolution protocol message carrying the MAC Address of described protection group, and described call control device is set to master state.Concrete, free address resolution protocol message carries the Virtual MAC of protection group, and this concrete message is for source MAC sends with the virtual mac address of protection group.This message make for connecting protection group and each calling access device convergent type switch can it be transmitted by this information updating, thus ensure that message after this can correct being forwarded in the new host apparatus of protection group.Simultaneously, according to the described first calling access device of the first log-on message adapter, be specially the registration management of the described first calling access device of management, obtain from described calling access device or the call request pointing to described calling access device, and according to described first log-on message process the first calling access device by after adapter the Voice over IP business that produces.Optionally; after becoming host apparatus; processing module needs regularly to generate the first notice message; for inform other call control devices its in normal work; if only have in former protection group one for subsequent use; there are not other stand-by equipments in protection group when it transfers to primary, can not notice message be sent.Optionally, processing module, also for judging that described call control device becomes non-active status the need of from master state, if so, then 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 after the described first calling access device of adapter, if find that described first calling access device is conversed, namely there is current Voice over IP business, then current according to the first calling access device described in from described first log-on message of described memory module and described call conversation information processing Voice over IP business.For Session Initiation Protocol (other agreements are similar), call conversation information spinner will include but not limited to: Call-ID and Fromtag, totag etc. in the ID (being generally telephone number, the PublicID namely in signaling) of calling both sides, the contact address of calling both sides and dialog procedure.Described call control device is after access device is called out in adapter first, if find described first log-on message that not only there is described first calling access device, and find the call conversation information of described first calling access device, then illustrate described first calling access device converse, so after its end of conversation by signaling for its terminate converse.In general; only having registration process, setting up call connection process and terminating the signaling message of communication process needs by the call control device in protection group; and media message in communication process can call control device in obstructed overprotection group; therefore when protection group carries out active-standby switch; the protection mechanism that re-registers again of first dropped calls is needed compared to calling out access device in prior art; the calling access device of the present embodiment is without the need to re-registering; primary call control device after switching can directly take over current call, therefore can not cause dropped calls.Optionally, when described processing module also can be used for being in master state, the login request message according to the second calling access device newly added is its registration, generates the second log-on message, and the Voice over IP business produced after processing its registration.Generate and carry by the notice message of the second log-on message, and send to other call control devices in protection group by sending module, for the use of carrying out pretection switch when 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 having conversation initialized protocol (SessionInitiationProtocol, SIP) the core I P multimedia system (IPMultimediaSubsystem of registrar and call proxy server function, IMS), there is the core side Softswitch of the gatekeeper function in H.323 agreement, there is Media Gateway Controller (MediaGatewayController, MGC) side MGCP (as MGCP or Megaco/H.248) function switching equipment and there is the couple in router (AccessRouter of similar functions, AR).
The call control device that the embodiment of the present invention discloses; in pretection switch process; the calling access device that it connects is without the need to re-registering; can this calling access device of seamless pipe VOIP business after switching; and can not dropped calls be caused; therefore simplifying the complexity of VoIP service protection realization, speech quality is also protected, and improves Consumer's Experience.Simultaneously, described call control device does not need calling access device to carry out abnormality detection and corresponding masterslave switchover to it, do not need calling access device to configure two upper row addresses, reduce the configuration requirement of calling access device, thus reduce the cost of calling access device yet.
Embodiment three: the embodiment of the present invention also provides a kind of network equipment, as shown in Figure 4, comprises processor, memory, transceiver, wherein processor with rear both be coupled.This network equipment may be used for performing as embodiment one method.Concrete, transceiver for receive from this network equipment outside message and outwards send message, the function of described transceiver also can by a receiver and a transmitter replacement, and wherein receiver is for receiving message, and transmitter is for sending message; Memory, for storing information; Processor is used for processing the message received, concrete, has the function as processing module in embodiment two.
This processor can be general processor, and as integrated circuit (IC), so its program performed stores in memory; This processor also can be application-specific integrated circuit (ASIC), as ASIC (ApplicationSpecificIntegratedCircuit) or FPGA (Field-Programmablegatearray), or other similar functions devices.
The network equipment that the embodiment of the present invention discloses; in pretection switch process; the calling access device that it connects is without the need to re-registering; can this calling access device of seamless pipe VOIP business after switching; and can not dropped calls be caused; therefore simplifying the complexity of VoIP service protection realization, speech quality is also protected, and improves Consumer's Experience.Simultaneously, described call control device does not need calling access device to carry out abnormality detection and corresponding masterslave switchover to it, do not need calling access device to configure two upper row addresses, reduce the configuration requirement of calling access device, thus reduce the cost of calling access device yet.
Embodiment four: the embodiment of the present invention provides a kind of Voice over IP system.
Described system comprises interconnective protection group and calling access device; Described protection group at least comprises interconnective the first call control device as host apparatus and the second call control device as stand-by equipment; Described first call control device, for generating log-on message according to the registration request from described calling access device, after succeeding in registration, basis is from described calling access device or the call request pointing to this calling access device, and calls out the Voice over IP business of access device described in described log-on message process; Generate the first message carrying described registration message, and send described first message to other call control devices in described protection group; During it is as host apparatus, timed sending is for noticing the second message of its operating state, and/or, send the 3rd message when it becomes non-active status from master state; Described second call control device, for receiving described first message and storing the described log-on message carried in described first message; The state of described first call control device is monitored according to described second message and/or described 3rd message, when detecting that described first call control device breaks down, using the IP address of the IP address of described protection group as self, send the free address resolution protocol message carrying the MAC Address of described protection group to described calling access device, and become master state from stand-by state; Obtain from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.
Optionally, described second call control device, also for after it becomes master state, the current Voice over IP business of described calling access device is taken over, the call conversation information of the Voice over IP business that the described calling access device that described call conversation information sends before it breaks down for described first call control device is current according to described log-on message and call conversation information.
In a word; the present embodiment protection group is made up of according to IP route redundancy protocol the call control device disclosed in multiple embodiment two; according to the guard method disclosed in embodiment one; the Voice over IP business of the calling access device under this protection group is protected; for Session Initiation Protocol; concrete Signalling exchange figure in this system as shown in Figure 5; only to only have the protection group of two call control devices in figure; 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 see embodiment two, and this protection group realizes the method for Voice over IP service protection see embodiment one, no longer describes in detail.
In the protection mechanism of prior art Session Initiation Protocol in figure 6; calling access device needs regularly to send OPTIONS message monitoring standby usage state; once host apparatus breaks down, calling access device initiatively initiates active-standby switch, and again initiates 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, and when the host apparatus in protection group breaks down, calling access device is without the need to again registering; active-standby switch is carried out voluntarily in protection group inside, and calling access device even can not perception.Meanwhile, by the active calls of backup calling access device, can ensure that calling access device is conversed when protection group active-standby switch and not interrupt.
The protection group of the VoIP business that the embodiment of the present invention discloses; in pretection switch process; calling access device is without the need to re-registering; primary call control device after switching can seamless pipe VOIP business; and can not dropped calls be caused; therefore simplifying the complexity of VoIP service protection realization, speech quality is also protected, and improves Consumer's Experience.Simultaneously; described protection group does not need calling access device to carry out abnormality detection and corresponding masterslave switchover to call control device; do not need calling access device to configure two upper row addresses, reduce the configuration requirement of calling access device, thus reduce the cost of calling access device yet.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can use hardware implementing, or firmware realizes, or their compound mode realizes.When implemented in software, above-mentioned functions can be stored in computer-readable medium or as the one or more instruction on computer-readable medium or code and transmit.Computer-readable medium comprises computer-readable storage medium and communication media, and wherein communication media comprises any medium being convenient to transmit computer program from a place to another place.Storage medium can be any usable medium that computer can access.Be not limited to as example: 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 carrying or storing the expectation with instruction or data structure form program code and can by any other medium of computer access.In addition.Any connection can be suitable become computer-readable medium.Such as, if software be use coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or such as infrared ray, radio and microwave and so on wireless technology from website, server or other remote source, so the wireless technology of coaxial cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, wireless and microwave and so on be included in affiliated medium fixing in.As used in the present invention, dish (Disk) and dish (disc) comprise compression laser disc (CD), laser dish, laser disc, Digital Versatile Disc (DVD), floppy disk and Blu-ray Disc, the copy data of the usual magnetic of its mid-game, dish then carrys out the copy data of optics with laser.Combination above also should be included within 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 amendment done, equivalent replacement, improvement etc., all should be included within 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 first call control device and the second call control device; all-calls control appliance in described protection group connects calling access device; described Voice over IP business is the Voice over IP business of 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 described calling access device in described protection group carried in described message;
The state of described first call control device of described second call control device monitoring, when detecting that described first call control device breaks down, described second call control device is using the IP address of the IP address of described protection group as self, send the free address resolution protocol message carrying the MAC Address of described protection group to described calling access device, and become master state from stand-by state;
Described second call control device obtains from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.
2. guard method according to claim 1, is characterized in that, described guard method also comprises:
When described second call control device becomes after master state from stand-by state, the Voice over IP business that access device is current is called out, the call conversation information of the Voice over IP business that the described calling access device that described call conversation information sends before it breaks down for described first call control device is current according to described log-on message and call conversation information processing.
3. guard method according to claim 1 or 2, 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 carried in the message received by described receiver module, described first log-on message be connected with described call control device first call out the log-on message of access device in protection group, described protection group is the protection group at described call control device place;
Processing module, for judging that described call control device becomes master state the need of from stand-by state, if, then using the IP address of the IP address of described protection group as described call control device, send to described first calling access device the free address resolution protocol message carrying the MAC Address of described protection group, and described call control device is set to master state; Obtain from described calling access device or the call request pointing to described calling access device, according to described call request and described first log-on message process, call out the Voice over IP business of access device;
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 described call control device becomes non-active status the need of from master state, if so, then stops process IP carry voice traffic.
6. call control device according to claim 4 or 5, is characterized in that:
Described memory module, also for storing the call conversation information of carrying in the message received by 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 after described call control device is set to master state, according to Voice over IP business current described in from described first log-on message of 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 in master state, generate described second according to the login request message of calling out access device from be connected with described call control device second and call out second log-on message of access device in described protection group, and according to described second log-on message process the Voice over IP business of the second calling access device, generate and carry the notice message of described second log-on message;
Described memory module, also for storing described second log-on message;
Described call control device also comprises sending module, also for sending described notice message to other call control devices in described protection group.
8. a Voice over IP system, is characterized in that:
Described system comprises interconnective protection group and calling access device;
Described protection group at least comprises interconnective the first call control device as host apparatus and the second call control device as stand-by equipment;
Described first call control device, for generating log-on message according to the registration request from described calling access device, after succeeding in registration, basis is from described calling access device or the call request pointing to this calling access device, and calls out the Voice over IP business of access device described in described log-on message process; Generate the first message carrying described log-on message, and send described first message to other call control devices in described protection group; During it is as host apparatus, timed sending is for noticing the second message of its operating state, and/or, send the 3rd message when it becomes non-active status from master state;
Described second call control device, for receiving described first message and storing the described log-on message carried in described first message; The state of described first call control device is monitored according to described second message and/or described 3rd message, when detecting that described first call control device breaks down, using the IP address of the IP address of described protection group as self, send the free address resolution protocol message carrying the MAC Address of described protection group to described calling access device, and become master state from stand-by state; Obtain from described calling access device or the call request pointing to described calling access device, Voice over IP business according to described call request and described log-on message process.
9. system according to claim 8, is characterized in that:
Described second call control device, also for after it becomes master state, the current Voice over IP business of described calling access device is taken over, the call conversation information of the Voice over IP business that the described calling access device that described call conversation information sends before it breaks down for described first call control device is current according to described log-on message and call conversation information.
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| CN101325535A (en) * | 2007-06-15 | 2008-12-17 | 上海贝尔阿尔卡特股份有限公司 | Method and apparatus for rerouting call in communication network |
| CN101640611A (en) * | 2009-08-26 | 2010-02-03 | 烽火通信科技股份有限公司 | Method for synchronous and real-time reversion for VOIP voice service primary and standby modules |
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