CN101227437B - Equipment, system and method for implementing media gateway resource share - Google Patents
Equipment, system and method for implementing media gateway resource share Download PDFInfo
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- CN101227437B CN101227437B CN2007100011881A CN200710001188A CN101227437B CN 101227437 B CN101227437 B CN 101227437B CN 2007100011881 A CN2007100011881 A CN 2007100011881A CN 200710001188 A CN200710001188 A CN 200710001188A CN 101227437 B CN101227437 B CN 101227437B
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Abstract
The invention relates to a method, a system and equipment for achieving resource sharing of media gateway. Physical MGW logic is divided into a plurality of virtual MGW, and the resource of the physical MGW is allocated to the virtual MGW, and the virtual MGW are respectively registered in a plurality of mobile switching center server MSC servers, and the MSC servers share the resources of virtual MGW which are registered in the MSC servers. The example of the invention achieves the purpose of media gateway resource sharing through supposing the physical MGW into a plurality of virtual MGW, and when one-point fault is occurred, the stability and reliability of the total system are not influenced.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the media gateway resource technology of sharing.
Background technology
IU FLEX (IU, the interface between wireless access network and the core net) is a kind of technology of load sharing, and its technical characteristic is the core network entity that Access Network can connect a plurality of same domain (circuit switching (CS) territory or packet switch PS territory) simultaneously.
IU FLEX group-network construction is shown in accompanying drawing 1.Among Fig. 1, each MSC (mobile switching centre) is connected through the IU interface with RNC (radio network controller); Each MSC is made up of MSC server (Mobile Switching Center Server) and MGW (WMG), the responsible multiple speech processes resources such as TC (transcoder), EC (echo canceller), conf bridge that provide to MSC server of MGW; Here, a MSCserver can connect a plurality of MGW, but a MGW can only be registered in a MSC server.
Under the existing this network architecture; When certain MSC server fault; Can cause all MGW resources of its administration all to be in idle state, other MSC server can not use the resource of these MGW again, like this; Will cause the serious wasting of resources, especially when MSC server administers a plurality of physics MGW simultaneously.
In addition; When following Single Point of Faliure takes place when; As: MGW breaks down, MC interface (like the H248 interface between MSC server and the MGW) between MSC server and the MGW or the link occurs fault between link occurs fault, MGW and the RNC between MSC server and the MGW etc., and all or part of user's a period of time that can cause being registered under this MSC server can not be carried out business; The all or part of user who is registered under this MSCserver will be divided to other MSC server; The network traffics that will cause other MSC server to bear like this increase suddenly, and the stability of whole system and reliability are a greater impact.
Summary of the invention
In view of above-mentioned existing in prior technology problem; The purpose of the embodiment of the invention provides a kind of method, system and equipment of realizing that media gateway resource is shared; The embodiment of the invention is through inventing physics MGW a plurality of virtual MGW, make MSC server in can shared network the resource of virtual MGW of oriented its registration.
The purpose of the embodiment of the invention is to realize through following technical scheme:
The embodiment of the invention provides a kind of method that realizes the media gateway MGW resource-sharing, comprising:
Physics MGW is logically divided into a plurality of virtual MGW; And give a plurality of said virtual MGW with the resource distribution of said physics MGW; A plurality of said virtual MGW are registered in a plurality of mobile switching center server MSC server respectively, and the quantity of the virtual MGW of said division is more than or equal to the quantity of MSC server; Said MSCserver shares the resource of a plurality of said virtual MGW to its registration.
When the number of said physics MGW when being a plurality of, said MSC server is according to the said virtual MGW resources configured ratio of difference, uses the resource of a plurality of said virtual MGW or preferentially uses the resource of a said virtual MGW.
The embodiment of the invention provides a kind of system that realizes the media gateway MGW resource-sharing again; Comprise: a plurality of mobile switching center server MSC server and at least one MGW; Said MGW is a plurality of virtual MGW by logical partitioning; Said virtual MGW disposes the resource of said MGW; A plurality of said virtual MGW are registered in a plurality of said MSC server respectively, and the quantity of the virtual MGW of said division is more than or equal to the quantity of MSC server, and a plurality of said MSC server share the resource of a plurality of said virtual MGW.
The embodiment of the invention also provides a kind of mobile interaction center server MSC server; Comprise: registry module and resource management control module; Said registry module is used for a plurality of virtual MGW are registered, and the quantity of said virtual MGW is more than or equal to the quantity of MSC server; Said resource management control module is used to use and manage the resource to the virtual MGW of MSC server registration.
Technical scheme by the invention described above embodiment provides can be found out; The embodiment of the invention provides a kind of method, system and equipment of realizing that media gateway resource is shared; The embodiment of the invention is through inventing physics MGW a plurality of virtual MGW, make MSC server in can shared network the resource of virtual MGW of oriented its registration; And, Single Point of Faliure do not influence the stability and the reliability of whole system when taking place.
Description of drawings
Fig. 1 is an IU FLEX networking diagram in the prior art;
Fig. 2 is the IU FLEX networking plan sketch map that media gateway resource is shared in the first embodiment of the invention;
Fig. 3 is the IU FLEX networking plan sketch map that media gateway resource is shared in the second embodiment of the invention;
Fig. 4 is the IU FLEX networking plan sketch map that a media gateway resource is shared in the third embodiment of the invention;
Fig. 5 is the structural representation of the MSC server of the embodiment of the invention.
Embodiment
The embodiment of the invention can be logically divided into a plurality of virtual MGW with physics MGW in concrete implementation procedure, and gives said virtual MGW with the resource distribution of physics MGW, and said a plurality of virtual MGW are registered in a plurality of MSC server respectively; The a plurality of virtual MGW of said a plurality of MSC server administration to its registration, that is, said a plurality of MSC server can share the resource of virtual MGW of oriented its registration.
Be elaborated to accompanying drawing 5 pairs of described methods of the embodiment of the invention, system and equipment below in conjunction with accompanying drawing 2.
Fig. 2 is the IU FLEX networking plan sketch map that media gateway resource is shared in the first embodiment of the invention, comprises n MSC server and m physics MGW (m >=1, n >=2) in the networking shown in Figure 2;
In the concrete implementation procedure of first embodiment of the invention, can m physics MGW be carried out virtually respectively, each physics MGW is n virtual MGW by logical partitioning, and gives said virtual MGW with the resource distribution of physics MGW; If virtual MGW is n, this n virtual MGW is registered in n MSCserver respectively, and these virtual MGW logically are separate;
Like this, each the MSC server in the embodiment of the invention has administered m the virtual MGW to its registration, and promptly MSC server can use all these m the resources to the virtual MGW of its registration.When wherein certain MSC server breaks down; Fault MSC server cannot use the resource of the oriented virtual MGW that it was registered; But can not influence other MSC server, other MSC server can also use all to belong to the resource of the virtual MGW of its administration; Such as, when MSC server-1 broke down, other MSC server still can use the resource of the virtual MGW of its administration;
Certainly, when physics MGW is carried out logical partitioning, can be greater than n virtual MGW also with physics MGW logical partitioning, so just have at least two virtual MGW to be registered in a MSCserver simultaneously.
Fig. 3 is the IU FLEX networking plan sketch map that media gateway resource is shared in the second embodiment of the invention, comprises the MGW of n MSC server and m physics in the networking shown in Figure 3;
In the concrete implementation procedure of the embodiment of the invention, can each physics MGW be logically divided into two virtual MGW, be registered in two MSC server respectively; Such as; MGW-1 is two virtual MGW by logical partitioning, and these two virtual MGW are respectively to MSC server-1 and MSC server-2 registration, in like manner; MGW-1 also is divided into two virtual MGW; These two virtual MGW are respectively to MSC server-1 and MSC server-2 registration, and like this, MSC server-1 and MSC server-2 have just administered two virtual MGW respectively; When one of them MSC server breaks down, can not influence the resource that another MSC server uses its virtual MGW that administers.
Here; Only with RNC to same MSC server the quantity of virtual MGW of process all be all example mutually and describe; But it will be recognized by those skilled in the art that the quantity that when networking, can decide virtual MGW, promptly according to condition of different; The quantity of the virtual MGW that different RNC passes through during to same MSC server can be identical or different, same RNC to different MSC server the time the quantity of virtual MGW of process also can be identical or different.
Fig. 4 is the IU FLEX networking plan sketch map that media gateway resource is shared in the third embodiment of the invention, comprises n MSC server and a MGW in the networking shown in Figure 4; In the concrete implementation procedure of the embodiment of the invention, when having only a physics MGW, can be n logic MGW with this physics MGW logical partitioning, be registered in n MSC server respectively, promptly each MSC server administers a virtual MGW respectively; Such as, when MSC server-1 broke down, other MSC server can use the part resource of this physics MGW equally, the resource of the virtual MGW that promptly registered to other MSC server.
This network construction form that has only a MGW is suitable for operator's networking to be used during the initial stage, because be not a lot of networking initial stage user, traffic carrying capacity is not very big, uses this kind networking can save operator's networking cost; When the number of users of operator's development increases gradually, can reach the stability that increases power system capacity and system through the quantity that increases physics MGW.When increasing physics MGW, only need the physics MGW that increases is carried out virtual, and register just passablely to corresponding M SC server, can not influence the operate as normal of existing network.
In the embodiment of the invention, at this moment the quantity that physics MGW is logically divided into virtual MGW also can, have at least two logic MGW to be registered among the same MSC server greater than the quantity of MSC server.
In the concrete implementation procedure of the embodiment of the invention, when physics MGW being logically divided into a plurality of virtual MGW, can adopt multiple zoned format, as, can carry out logical partitioning to physics MGW according to demands such as capacity, function, performances; Also can carry out logical partitioning according to the IP/ATM/TDM bearing resource; Can also adopt the mode of resource pool to carry out logical partitioning according to resources such as media resource TC/EC/ conf bridges.As for the concrete implementation procedure of logical partitioning, existing ripe solution in the prior art is not that embodiment of the invention institute will pay close attention to, and has not just elaborated here.
In the concrete implementation procedure of the embodiment of the invention, except the resource-sharing that can realize virtual MGW, can also realize the sharing of user plane resource and signaling plane resource between radio network controller (RNC) and the virtual MGW; At this moment need satisfy: user plane resource between RNC and each the physics MGW and signaling plane resource multiply by m-1 respectively (m equal except 1; Wherein m is the quantity of physics MGW in the network), be not less than user plane resource summation and signaling plane resource summation between all MSC and the RNC; When m=1, the resource summation when the resource sum between RNC and this physics MGW must satisfy all MSC and works independently.
When the number of MGW is a plurality of, i.e. m >=2 o'clock, the embodiment of the invention can also be evaded the Single Point of Faliure problem except realizing the resource-sharing, specifies below.
(1) certain physics MGW breaks down in network, and MSC server can also select to use the resource of other virtual MGW, thereby makes the whole system operate as normal;
Be exactly that after physics MGW was a plurality of virtual MGW by logical partitioning, said a plurality of virtual MGW were respectively to a plurality of MSC server registrations specifically.If certain physics MGW breaks down, this physics MGW just can't provide resource service for the MSC server of its registration so, but MSC server this moment can also use other the resource to the virtual MGW of its registration.MSC server can be according to different virtual MGW resources configured ratio when using the resource of other MGW, and load sharing uses the resource of a plurality of virtual MGW or preferentially uses the resource of certain virtual MGW.Such as, when MGW-1 breaks down among Fig. 2, because other MGW registered to it through the form of virtual MGW, so MSC server-1 can also use all virtual MGW resources of registering to it.
(2) all dispose MC interface (such as the H248 interface) between MSC server and a plurality of physics MGW, MSC server controls the resource of virtual MGW through said MC interface; If wherein certain MC interface breaks down, though MSC server can't continue to use the resource of the virtual MGW that is connected with fault MC interface, MSC server can also select to use the normal MGW of other MC interface; Can reach the MC interface fault between MSC server and one of them the physics MGW like this, only influence MSC server the resource of this MGW is used, can not have influence on the use of MSC server the normal MGW resource of other MC interface; And because the MC interface between other MSC server and this MGW is normal, so other MSC server can also continue to control and use the resource of this MGW.Such as; When the MC interface between MSC server-1 and the MGW-1 breaks down; MSC server-1 can not use the resource of MGW-1; But because the MC interface between MSC server-1 and other physics MGW is normal, so MSC server-1 can also use other resource to the virtual MGW of its registration through normal MC interface; Simultaneously, for other MSCserver except that MSC server-1, because MGW-1 is normal with the MC interface of other MSC server, so MGW-1 still can provide resource to other MSC server.
(3) when M3UA between MSC server and the physics MGW (Message Transfer Part third level user adaptation layer) link occurs fault or MTP3-B (3 grades of the message transfer parts) link occurs fault between RNC and a plurality of physics MGW, do not influence the function of this MSC server;
Be exactly specifically; All dispose the M3UA link between MSC server and a plurality of physics MGW; All dispose the MTP3-B link between RNC and a plurality of physics MGW; A plurality of virtual MGW share said M3UA link and MTP3-B link, and virtual MGW transmits the IU interface signaling between MSC server and the RNC as SG (Signalling Transfer Point);
When the M3UA link failure between MSC server and certain the physics MGW; MSC server does not just pass through faulty link; Transmit the IU interface signaling between MSC server and the RNC from this virtual MGW, but transmit from other virtual MGW through normal M3UA link.
When virtual MGW transmitted the IU/A interface signaling, MSC server can use M3UA link route priority to reach between a plurality of virtual MGW, a plurality of virtual MGW of the selection of load sharing or preferentially select a virtual MGW to transmit the IU interface signaling and give RNC; RNC can use MTP3B link route priority to reach a plurality of virtual MGW of selection of load sharing or preferentially select a virtual MGW to transmit I u interface signaling and give MSCserver simultaneously.
In the embodiment of the invention, can also between RNC and each MSC Server, increase a direct-connected IP/ATM/E1 and carry, the interface of configuration IU interface signaling face.Like this, MSC server just can not pass through MGW, directly the IU interface signaling is sent to RNC.
In the concrete implementation procedure of the embodiment of the invention, MSC server is carrying out call treatment, and when increasing the user plane resource of MGW, the principle of selecting MGW is Calling Side and the identical MGW of the preferential selection of callee side; Specify below:
For office call, if which virtual MGW Calling Side resource and callee side resource do not confirm all that on MSC server preferentially is chosen in the last king of increasing of same virtual MGW and is side and callee side resource, reaches the purpose that office call takies identical virtual MGW resource.If the Calling Side resource has confirmed that when certain virtual MGW then MSC server preferentially is chosen in this virtual MGW and goes up increase callee side resource; If the callee side resource has confirmed that on certain virtual MGW then MSC server preferentially is chosen in this virtual MGW and goes up increase Calling Side resource.
For outbound call or incoming call, if which virtual MGW Calling Side resource and callee side resource do not confirm all that on MSC server preferentially is chosen in same virtual MGW and goes up increase Calling Side and callee side resource; If the callee side resource has confirmed that on a fixing virtual MGW then MSC server preferentially selects this fixing virtual MGW when local office is increased the Calling Side resource.
For transit call, if which virtual MGW Calling Side resource and callee side resource do not confirm all that on MSC server preferentially is chosen in same virtual MGW and goes up increase Calling Side resource and callee side resource; If in two office directions the Calling Side resource of an office direction or callee side resource being arranged is to confirm on certain virtual MGW, then MSC server preferentially selects this virtual MGW when increasing the resource of another office direction.
MSC server is being certain virtual MGW when increasing resource, increases the resource failure owing to reasons such as virtual MGW resource congestion, resource be unavailable cause, and MSC server can reselect on the virtual MGW of other normal operation increases related resource.
Again the described system of the embodiment of the invention is described below.
The structure of the said system of the embodiment of the invention is as shown in Figure 2; Specifically comprise: a plurality of MSC server and at least one physics MGW; Said MGW comprises a plurality of virtual MGW; Said virtual MGW disposes the resource of MGW, and said a plurality of virtual MGW are registered in a plurality of mobile switching center server MSC server respectively;
Be exactly specifically; In the concrete implementation procedure of the embodiment of the invention can be; Physics MGW is divided into a plurality of virtual MGW, and the resource of said physics MGW is configured to these a plurality of virtual MGW, and said a plurality of virtual MGW are registered in a plurality of mobile switching center server MSC server respectively; Said a plurality of MSC server shares the resource to the virtual MGW of its registration through said a plurality of virtual MGW.The MGW of a physics can virtually be the MGW of a plurality of logics, and the MGW of each logic is called a virtual MGW, and these virtual MGW are registered in corresponding MSC server respectively, and these virtual MGW logically are separate; A plurality of virtual MGW among the MGW of a physics can be registered in a plurality of MSCserver respectively, also can partly be registered in same MSC server.
In the described system of the embodiment of the invention, because each MSC server administered a plurality of virtual MGW to its registration, promptly MSC server can use the resource of all this a plurality of virtual MGW to its registration.When wherein certain MSC server breaks down; Fault MSC server cannot use the resource of the oriented virtual MGW that it was registered; But can not influence other MSC server, other MSCserver can also use all to belong to the resource of the virtual MGW of its administration.
At last the Mobile Switching Center Server in the embodiment of the invention is described.
The described MSC server of embodiment of the invention structure is as shown in Figure 5, specifically comprises: registry module and resource management control module,
Registry module, when physics MGW was logically divided into a plurality of virtual MGW, the registry module of MSC server was carried out registration management to said a plurality of virtual MGW;
Be exactly specifically, the MGW of a physics can be the MGW of a plurality of logics by logical partitioning, and the MGW of each logic is called a virtual MGW, and these virtual MGW are registered in the registry module of MSC server respectively; A plurality of virtual MGW among the MGW of a physics can be registered in a plurality of MSCserver respectively, also can partly be registered in same MSC server.Registry module receives the application for registration of virtual MGW, and these virtual MGW are registered.
A plurality of virtual MGW are responsible for using and are managed to the resource management control module;
Be exactly specifically because at least one virtual MGW is to MSC server registration, so MSCserver resource management control module just can administer the resource of virtual MGW of oriented its registration, and the resource of these virtual MGW managed.
And as virtual MGW when being a plurality of, said resource management control module can also be according to different virtual MGW resources configured ratio, the selection of load sharing or preferentially select the resource of certain virtual MGW.
For the concrete implementation procedure of described system of the embodiment of the invention and mobile interaction center server, the existing detailed description in the method just repeated no more here in front.
Here; The embodiment of the invention is that example describes in IU Flex networking with the media gateway resource sharing application only, but it will be recognized by those skilled in the art that the embodiment of the invention also can be applied in the A FLEX networking; Substitute RNC with BSC this moment; BTS substitutes NodeB, and the interface between MSC and the BSC is the A interface, and the signaling that MGW transmits is the A interface signaling; Its concrete implementation procedure is similar with the embodiment of the invention, repeats no more here.
The described method of the embodiment of the invention all is applicable in MOCN (MOCN) networking: the media gateway resource that is applicable to the same operator MSC in the MOCN networking is shared, and is applicable to that also the media gateway resource of the different operators MSC of MOCN is shared.
Technical scheme by the invention described above embodiment provides can find out, through physics MGW being invented a plurality of virtual MGW, make MSC server in can shared network the resource of virtual MGW of oriented its registration; And, Single Point of Faliure do not influence the stability and the reliability of whole system when taking place; And, when increasing physics MGW, only need the physics MGW that increases is carried out virtual, and register just passablely to corresponding M SC server, can not influence the operate as normal of existing network.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (7)
1. a method that realizes the media gateway MGW resource-sharing is characterized in that, comprising:
Physics MGW is logically divided into a plurality of virtual MGW; And give a plurality of said virtual MGW with the resource distribution of said physics MGW; A plurality of said virtual MGW are registered in a plurality of mobile switching center server MSC server respectively, and the quantity of the virtual MGW of said division is more than or equal to the quantity of MSC server;
Said MSC server shares the resource of a plurality of said virtual MGW to its registration;
Said MSC server shares user plane resource and signaling plane resource between radio network controller (RNC) and the said virtual MGW through said virtual MGW; Perhaps, said MSC server is through user plane resource and signaling plane resource between said virtual MGW sharing base controller BSC and the said virtual MGW;
If the quantity of physics MGW is m in the network, when m=1, RNC or BSC, and the resource summation of the resource sum between this physics MGW when satisfying all MSC and working independently; When m＞1, RNC or BSC, and the user plane resource between each physics MGW and signaling plane resource multiply by m-1 respectively, is not less than user plane resource summation and signaling plane resource summation between all MSC and the RNC.
2. method according to claim 1; It is characterized in that; When the number of said physics MGW when being a plurality of, said MSC server is according to the said virtual MGW resources configured ratio of difference, uses the resource of a plurality of said virtual MGW or preferentially uses the resource of a said virtual MGW.
3. method according to claim 1; It is characterized in that; When the number of said physics MGW when being a plurality of, said method further comprises: between MSC and a plurality of RNC, dispose the IU interface respectively, said MSCserver transmits the IU interface signaling between said MSC server and the said RNC through said virtual MGW; Perhaps
Between MSC and a plurality of BSC, dispose the A interface respectively, said MSC server transmits the A interface signaling between said MSC and the said BSC through said virtual MGW.
4. method according to claim 3; It is characterized in that; When said virtual MGW transmitted the IU interface signaling, said MSC server selected a plurality of said virtual MGW according to the said virtual MGW resources configured ratio of difference or preferentially selects a said virtual MGW to transmit the IU interface signaling and give RNC;
When said virtual MGW transmitted the A interface signaling, said MSC server selected a plurality of said virtual MGW according to the said virtual MGW resources configured ratio of difference or preferentially selects a said virtual MGW to transmit the A interface signaling and give BSC.
5. method according to claim 1; It is characterized in that; When the number of said physics MGW when being a plurality of; Said method further comprises: said MSC server is carrying out call treatment, when increasing the user plane resource of said physics MGW, preferentially is chosen in same virtual MGW and goes up increase Calling Side resource and callee side resource.
6. method according to claim 1; It is characterized in that; When the number of physics MGW when being a plurality of, said method further comprises: direct configuration IU interface between RNC and each said MSC Server, and said MSC server directly is sent to said RNC with the IU interface signaling through said IU interface; Perhaps
Between BSC and each said MSC server, directly dispose the A interface, said MSC server directly is sent to said BSC with the A interface signaling through said A interface.
7. a system that realizes the media gateway MGW resource-sharing is characterized in that, comprising: a plurality of mobile switching center server MSC server and at least one MGW,
Said MGW is a plurality of virtual MGW by logical partitioning, and said virtual MGW disposes the resource of said MGW, and a plurality of said virtual MGW are registered in a plurality of said MSC server respectively, and the quantity of the virtual MGW of said division is more than or equal to the quantity of MSC server;
A plurality of said MSC server share the resource of a plurality of said virtual MGW;
Said MSC server shares user plane resource and signaling plane resource between radio network controller (RNC) and the said virtual MGW through said virtual MGW; Perhaps, said MSC server is through user plane resource and signaling plane resource between said virtual MGW sharing base controller BSC and the said virtual MGW;
If the quantity of physics MGW is m in the network, when m=1, RNC or BSC, and the resource summation of the resource sum between this physics MGW when satisfying all MSC and working independently; When m＞1, RNC or BSC, and the user plane resource between each physics MGW and signaling plane resource multiply by m-1 respectively, is not less than user plane resource summation and signaling plane resource summation between all MSC and the RNC.
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| CN101945433B (en) * | 2009-07-10 | 2013-07-17 | 中国移动通信集团上海有限公司 | Method, system and equipment for selecting mobile switch center server |
| CN102006187B (en) * | 2010-11-19 | 2016-03-30 | 中兴通讯股份有限公司 | A kind of network-building method of soft switch gateway exchange and network |
| CN103973707B (en) * | 2014-05-26 | 2017-02-01 | 杭州东信北邮信息技术有限公司 | Method and system for realizing virtualization sharing of media resources |
| CN112099942B (en) * | 2020-08-04 | 2023-08-25 | 北京奇艺世纪科技有限公司 | Port multiplexing method, system, terminal, server, equipment and storage medium |
| CN114189822A (en) * | 2020-09-14 | 2022-03-15 | 上海宽带技术及应用工程研究中心 | User plane function network element sharing method, medium and electronic equipment |
| CN113612514B (en) * | 2021-06-21 | 2022-11-25 | 深圳震有科技股份有限公司 | Media resource processing system, method and equipment |
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| CN1533109A (en) * | 2003-03-26 | 2004-09-29 | 华为技术有限公司 | Method for realizing call processing via virtual medium gateway |
| CN1553668A (en) * | 2003-06-03 | 2004-12-08 | 华为技术有限公司 | Method for inter-communication between virtual media gates |
| CN1822685A (en) * | 2005-06-27 | 2006-08-23 | 华为技术有限公司 | Method for realizing mobile switching center double ownerships |
| CN1878150A (en) * | 2006-07-04 | 2006-12-13 | 华为技术有限公司 | Method and system for realizing time-division multiplexing bearing resource share |
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| CN1533109A (en) * | 2003-03-26 | 2004-09-29 | 华为技术有限公司 | Method for realizing call processing via virtual medium gateway |
| CN1553668A (en) * | 2003-06-03 | 2004-12-08 | 华为技术有限公司 | Method for inter-communication between virtual media gates |
| CN1822685A (en) * | 2005-06-27 | 2006-08-23 | 华为技术有限公司 | Method for realizing mobile switching center double ownerships |
| CN1878150A (en) * | 2006-07-04 | 2006-12-13 | 华为技术有限公司 | Method and system for realizing time-division multiplexing bearing resource share |
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