CN100353720C - Method for realizing media stream bypass - Google Patents
Method for realizing media stream bypass Download PDFInfo
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- CN100353720C CN100353720C CNB2004100570213A CN200410057021A CN100353720C CN 100353720 C CN100353720 C CN 100353720C CN B2004100570213 A CNB2004100570213 A CN B2004100570213A CN 200410057021 A CN200410057021 A CN 200410057021A CN 100353720 C CN100353720 C CN 100353720C
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Abstract
The present invention relates to a method for realizing a media stream bypass, which comprises the steps that firstly, position information of a calling subscriber terminal and a called subscriber terminal is acquired from a message; the method judges whether the calling subscriber terminal and the called subscriber terminal belong to the same subscriber group set in advance according to the position information, if true, then a media stream address of a proxy end subscriber is kept unchanged, else the media stream address of the proxy end subscriber is replaced into an address of a proxy; finally, call processing continues. In the method, media stream address information carried by a subscriber in a signaling message is no longer changed, the subscriber satisfies a media stream bypass condition, media streams of the subscriber can be directly intercommunicated between the terminals for realizing the media stream bypass, and thus, occupation of the media streams to a network bandwidth resource is reduced, and dependence on the forwarding performance of proxy equipment is reduced.
Description
Technical field
The present invention relates to a kind of multimedia communication technology, especially relate to a kind of based on the method that realizes the Media Stream Bypass function in the multimedia communication of Internet protocol.
Background technology
Soft switch and packet-switch technology be owing to have broad application prospects and can satisfy people's variation, personalized business demand, become one of focus that industry pays close attention to most.
Agency (PROXY) is to be one of important technology in the network (being representative with next generation network (NGN) especially) of core with above-mentioned technology.General PROXY is made up of Xin Lingdaili and Media proxy, and the operation principle of Xin Lingdaili and Media proxy as shown in Figure 1.
Xin Lingdaili (SP, Signalling Proxy):
PROXY can regard soft switchcall server as concerning terminal, promptly the registration of terminal and message related to calls all can be issued PROXY earlier, and PROXY is transmitted to the core soft switchcall server again through after the signaling process.On the other hand, PROXY can regard terminal as again to the core soft switchcall server, and soft switchcall server at first will be called out called request and issue PROXY earlier, and PROXY is transmitted to real called user terminal again through after the signaling process.General PROXY need support SIP, H.323, MGCP, H.248 wait in the agreement one or more.Because PROXY has participated in whole call flow, so PROXY can obtain details such as corresponding user's registration, calling.
Media proxy (MP, Media Proxy):
PROXY carries out the agency of Media Stream.The user that all PROXY acted on behalf of and the Media Stream of extraneous intercommunication all pass through PROXY and handle and transmit.As the user under the PROXY during as call subscriber terminal, the called address of being seen comes from PROXY; As the user under the PROXY during as called user terminal, the called address that call subscriber terminal is seen is the address of PROXY.
Fig. 1 has described the agent process schematic diagram of signaling flow and Media Stream.The signaling flow of terminal is handled by acting on behalf of Zhongdao server, and Media Stream also carries out transfer by the agency simultaneously.In environment shown in Figure 1, the signaling message number is generally less, and a common calling is greatly about about 10 signaling messages, and Media Stream just has 30～50 messages one second.Media Stream carries out transfer by PROXY and has some advantages, can mark the QoS class letter or functions such as Lawful intercept are provided for Media Stream such as PROXY.The while Media Stream carries out transfer by PROXY and also has the problem of some:
1) the PROXY equipment performance is had relatively high expectations: because PROXY each second need handle the message of 30-50 Media Stream, under the more situation of number of users, PROXY just must possess the forwarding that higher performance just has the ability to carry out Media Stream.
2) Media Stream takies than the macroreticular bandwidth resources: Media Stream all carries out transfer by PROXY, and is more serious to taking of the communication network network bandwidth, and network will have to higher bandwidth resources the are used for transmission of Media Stream is especially being arranged under the situation of Video Applications.
Therefore, the present demand based on existence realization Media Stream Bypass in the multimedia communication of Internet protocol just needs Media Stream directly to transmit between terminal, and does not act on behalf of by PROXY, as shown in Figure 2.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of Media Stream Bypass, and this method makes the Media Stream that is preset at the user in same user's group directly realize intercommunication at terminal room, can satisfy in the multimedia communication realizing the demand of Media Stream Bypass.
For addressing the above problem, the invention provides a kind of method that realizes Media Stream Bypass, its method is specially: the positional information of obtaining call subscriber terminal and called user terminal from message; Judge according to the positional information that is obtained whether call subscriber terminal and called user terminal belong to the same user's group that presets, if call subscriber terminal and called user terminal belong to same user's group, the Media Stream address of then keeping the agent side user remains unchanged, otherwise agent side user's Media Stream address is replaced with agency's address; Proceed call treatment at last;
Described user's group is the set that needs the user of realization Media Stream Bypass, and this set is made up of the user who has direct intercommunication ability at the IP layer.
Positional information described in this method is User Identity information or IP address, and in the process of the positional information of obtaining call subscriber terminal and called user terminal, at first should take the identify label at family earlier as user position information, in the time that described identify label can't be obtained, obtain user's IP address as user position information.When positional information is user's IP address, in order further to get access to user's identification information again, can whether belong to same agency to call subscriber terminal and called user terminal judges, if, then according to the call information of the IP address reverse find call subscriber terminal that obtains, and from this call information, obtain the identification information of this call subscriber terminal.
Judging whether call subscriber terminal and called user terminal belong in the process of the same user's group that presets, can select the user of agent side earlier, determine that according to this user position information the user under this user organizes, judge again whether another user belongs to the affiliated user's group of this agent side user.
In order to realize method of the present invention, need set up user's group table, should comprise the User Identity territory that need carry out Media Stream Bypass in this user's group table, and the IP address field of this User Identity territory correspondence.
With respect to prior art, the beneficial effect that the present invention brings is: because in the method provided by the invention, for the user who satisfies the Media Stream Bypass condition, no longer change the Media Stream address information that it carries in signaling message, thereby realized the direct intercommunication of Media Stream between terminal of the user in same user's group, make and no longer to pass through the transmission of IP network and agency's processing by the Media Stream that belongs to same user's group that the agency handles originally, thereby reduced Media Stream taking to network bandwidth resources, alleviated the load of network, reduced dependence simultaneously, made the message forwarding performance of acting on behalf of no longer become and limit one of principal element of multimedia communication when traffic carrying capacity improves the agent equipment forwarding performance.
Description of drawings
Fig. 1 is the networking structure schematic diagram of agency in next generation network NGN;
Fig. 2 is a schematic diagram of realizing Media Stream Bypass among the next generation network NGN;
Fig. 3 one can not realize the network configuration illustration of Media Stream Bypass;
Fig. 4 is the flow chart that the agent side user realizes Media Stream Bypass during as caller;
The flow chart of Fig. 5 to be the agent side user realize when called Media Stream Bypass.
Embodiment
The invention provides a kind of method that realizes Media Stream Bypass, this method is adapted at the agency and realizes on (PROXY) equipment, but is not limited to special-purpose agent equipment, also can realize the method having on other equipment of PROXY function.
In VoIP system, consult the address of Media Stream between the terminal by signaling protocol.Under the situation that has PROXY to participate in, PROXY changes to the Media Stream address of terminal the address of PROXY, therefore one of key that realizes Media Stream Bypass is not revise the Media Stream address information that terminal is carried in signaling message, directly original Media Stream address information is passed to Correspondent Node.But not every networking structure can both be realized the bypass of Media Stream, Figure 3 shows that a kind of situation that can't realize Media Stream Bypass, terminal 1 and terminal 2 are respectively under different network address translation (nat) equipment, and NAT does not support ALG (ALG, Application Layer Gateway), if directly the other side is informed in the address of two terminals, these two terminals can't be conversed.Except that situation shown in Figure 3, also there are other situations that can't realize Media Stream Bypass, do not belong to a fire compartment wall etc. as user terminal.Therefore, the bypass functionality of Media Stream can only confirm that terminal room directly just can specific implementation in the intercommunication.
Because the distribution more complicated of IP address, the IP address exists situations such as overlapping, thereby PROXY equipment can't be only judges between the terminal whether directly intercommunication according to the IP address, therefore needs other information participation judgement.The mode that the present invention adopts User Identity (ID) information and IP address to be used judges whether to carry out the specific implementation of Media Stream Bypass.
The realization of Media Stream Bypass is because the calling party difference of acting on behalf of the place can be divided into the realization of Media Stream Bypass in the realization of Media Stream Bypass in the calling procedure and the called flow.
At first, in order to realize the method for realization Media Stream Bypass provided by the present invention, need pre-defined user's group, the user who is about to need the employing Media Stream Bypass and can carry out Media Stream Bypass is defined as user's group of a Media Stream Bypass, and this user's group is made up of the user who has direct intercommunication ability at the IP layer.Influencing the factor that the user has direct intercommunication ability comprises: user terminal does not belong to a fire compartment wall; User terminal belongs to different NAT respectively, and NAT does not support situations such as ALG ALG again.The different user that has only carried out definition in same user's group just can be realized the bypass of Media Stream each other.
Usually, user group is that the demand according to the user is defined by operator, and different users' set can be formed user's group of different Media Stream Bypass, and the user of LAN inside can form user's group of different Media Stream Bypass respectively.For example, all users of the A of company form the Media Stream Bypass user and organize A, all users of the B of company form the Media Stream Bypass user and organize B, can realize mutual Media Stream Bypass between the user of the A of company, all users of the B of company can realize the bypass of mutual Media Stream, but, thereby can not realize the bypass of Media Stream between the user of the user of the A of company and the B of company because the user of the A of company adheres to different user's groups separately with the user of the B of company.
According to the needs of the method that realizes Media Stream Bypass, the mode that provides a kind of preferable definition user to organize: set up user's group table in the PROXY system, each unit should comprise following structure in this user's group table:
User terminal ID territory, it has defined the scope that need carry out the user ID of Media Stream Bypass;
The user terminal IP address territory, it defines IP address range.
For example: the user ID group has defined the telephone number (as * * * * 0001～* * * * 0999) of certain scope of company, and the user of a domain name (as * @company.com) belongs to user's group, then the Media Stream between these users can be realized bypass, thereby can guarantee that these users realize direct intercommunication in network.
The IP address field has then defined the range of convergence corresponding to the IP address of above-mentioned user ID, the IP address range of terminal just, and this information is used at callee side and when getting less than caller id information the agent side user, is used to obtain the IP address of call subscriber terminal.
From the above mentioned, the user organize table one of implementation can for:
| Group id | User terminal ID territory | The user terminal IP address territory |
Calling procedure is meant that the Client-initiated of agent side is called out.By the agency of in the background technology: the user that all PROXY acted on behalf of and the Media Stream of extraneous intercommunication all pass through PROXY and handle and transmit; As the user under the PROXY during as call subscriber terminal, the called address of being seen comes from PROXY; As the user under the PROXY during as called user terminal, the called address that call subscriber terminal is seen is the address of PROXY, network configuration as shown in Figure 1.Actual in calling procedure that make a call is user under the agency, but also can simply regard the calling that the agency initiates as.
Fig. 4 has described a preferred embodiment that realizes the Media Stream Bypass method the agent side user during as the calling subscriber.Step 11 receives the call request of call subscriber terminal for PROXY; Proceed step 12, take out called user terminal identify label (ID) information in the call request, take out the id information of call subscriber terminal simultaneously.In order to realize call establishment, in the call request of issuing the agency, all can carry the id information of called user terminal, and the id information of call subscriber terminal may directly carry in the message of call request, may not carry yet, under the situation of not carrying, need from the corresponding registered user's of PROXY record information, to take out the call subscriber terminal id information.Step 13 is according to the id information of the call subscriber terminal that obtains and the id information of called user terminal, in system, inquire about in predefined user's group table, whether belong to user's group of same Media Stream Bypass to judge call subscriber terminal and called user terminal.Because what obtained all is id informations of user terminal, thereby when judging whether that specifically belonging to same user organizes, user's group under can determining by arbitrary end subscriber earlier, if this moment, this end subscriber did not belong to any one user's group, can illustrate that then calling subscriber and called subscriber do not belong to same user group, otherwise continue to judge that other end user is whether also in this user organizes.If calling subscriber and called subscriber belong to user's group of the same Media Stream Bypass of system definition, then carry out step 14, conversion is not done in the Media Stream address of call subscriber terminal, promptly no longer replaces the Media Stream address of call subscriber terminal with agent address, and proceeds call treatment 16; If call subscriber terminal and called user terminal do not belong to user's group of same Media Stream Bypass, then carry out step 15, the Media Stream address that call subscriber terminal is follow-up replaces with the address of PROXY, and carries out call treatment 16.
In calling procedure, also can obtain the IP address of call subscriber terminal, whether can use above-mentioned determination methods this moment belongs to same user to calling subscriber and called subscriber and organizes and judge, user's group under also can being determined by the ID sign of called user terminal earlier judges whether call subscriber terminal also belongs to this user's group again.Promptly when utilizing the IP address of call subscriber terminal, can realize equally because this kind determination methods has increased the operand of judging, thereby not recommending to realizing the judgement of Media Stream Bypass.In the time can obtaining the id information of user terminal, should be at first serve as according to carrying out the processing of call flow with the id information of user terminal.
In the call flow based on the VoIP agreement of reality, above-mentioned agent side user is as comprising the mutual of a plurality of messages in the flow process of caller, just judge after the user's group that whether belongs to same Media Stream Bypass, might not carry out the replacement or the reservation of address immediately, but this information is noted, in the follow-up mutual message of physical medium stream address information, just this information be can use, the replacement of address or the reservation of address carried out with decision.
The calling of the user that called flow is meant agent side when called.As described in the background art, as the user under the PROXY during as called user terminal, the called address that call subscriber terminal is seen is the address of PROXY.Thereby in called flow be user under the agency as called user terminal, but can regard simply that generally the agency is as called as.
Fig. 5 has described the preferred embodiment when the agent side user realizes the Media Stream Bypass method when called.Step 201 receives the incoming call request for PROXY; Proceed step 202, take out called user terminal identify label (ID) information in the call request; Further to obtain the call subscriber terminal id information.
Called flow and calling procedure are different, get access to the id information of call subscriber terminal surely because differ as called agency, if server does not issue call subscriber terminal information, then can't get access to the id information of call subscriber terminal, this situation can not take place when called end is opened the caller display business; And in calling procedure, corresponding call subscriber terminal ID and called user terminal id information can get access to.At this moment, should carry out step 203, judge whether to obtain the id information of call subscriber terminal.
If can obtain the id information of call subscriber terminal, then carry out step 204, judge whether call subscriber terminal and called user terminal belong to same user's group, then carry out step 209 if belong to same user's group, keep the Media Stream address of called user terminal constant, promptly no longer replace the Media Stream address of called user terminal with agent address, and carry out step 211 and continue call treatment, otherwise the Media Stream address of called user terminal is replaced with agent address, and carry out step 211 and continue call treatment.In this kind situation, because obtaining all is id informations of user terminal, thereby the user's group under can determining by arbitrary end subscriber when specifically judging, if this moment, this end subscriber did not belong to any one user's group, can illustrate that then calling subscriber and called subscriber do not belong to same user group, otherwise continue to judge that other end user is whether also in this user organizes.
If judge the id information that can not obtain call subscriber terminal, then should carry out step 205, from the incoming call request, obtain the IP address information of call subscriber terminal, carry out step 206 after the IP address information of acquisition call subscriber terminal, id information according to called user terminal is searched in user's group table of Media Stream Bypass, to determine that the user under the called subscriber organizes, if this called user terminal does not belong to the Any user group, then carry out step 210, the Media Stream address of called user terminal is replaced with agency's address, and carry out step 211, continue call treatment; If called user terminal belongs to a certain user's group, then carry out step 207, from user's group table, obtain with this user and organize corresponding IP address domain information, and carry out step 208, whether the IP address of judging the call subscriber terminal obtained belongs to described that obtain is organized corresponding IP address field with called user terminal place user, if the IP address of call subscriber terminal is in described IP address field, illustrate that call subscriber terminal and called user terminal belong to same user's group, then carry out step 209, keep the Media Stream address of called user terminal constant, and carry out the call treatment of step 211, if the IP address of call subscriber terminal is not organized in the corresponding IP address field called user terminal place user, illustrate that call subscriber terminal and called user terminal do not belong to same user's group, can not realize the bypass of Media Stream this moment, then should carry out step 210, the Media Stream address of called user terminal is replaced with agency's address, and carry out the call treatment of step 211.
Can only obtain the IP address owing in called flow, possibly can't obtain the id information of call subscriber terminal, at this moment, can judge whether calling subscriber and called subscriber belong to same agency, when call subscriber terminal and called user terminal belong to same PROXY, PROXY can write down the information such as IP address of call subscriber terminal, called user terminal can oppositely find the call information of call subscriber terminal according to the information such as IP address of call subscriber terminal, thereby obtains the id information of call subscriber terminal.Whether can belong to same user's group to call subscriber terminal and called user terminal this moment according to calling subscriber's id information is judged, and unnecessaryly judges according to the IP address of call subscriber terminal again.
Processing for above-mentioned called flow has corresponding alternative method can reach identical purpose equally.For example, behind the IP address of id information that only gets access to called user terminal and call subscriber terminal, also can search in user's group table of Media Stream Bypass according to the IP address of call subscriber terminal earlier, if arbitrary user that this IP address does not belong in user's group table organizes corresponding IP address field, then the address of called user terminal is replaced with agency's address, and carry out call treatment; If a certain user that the IP address of this call subscriber terminal belongs in user's group table organizes corresponding IP address field, then obtain this user and organize corresponding user ID territory, judge according to the id information of called user terminal whether this called user terminal belongs to the user's group under the call subscriber terminal, if called user terminal and call subscriber terminal belong to same user's group, then keep the address of called user terminal constant, and carry out call treatment, if called user terminal and call subscriber terminal do not belong to same user's group, then the address of called user terminal is replaced with agency's address, and carry out call treatment.Because the method can increase whether call subscriber terminal and called user terminal are belonged to the operand that same user's group is judged in specific implementation process, thereby do not recommend.
In called flow, can obtain the IP address of called user terminal, can use above-mentioned determination methods this moment, according to the IP address of called user terminal whether calling subscriber and called subscriber being belonged to same user's group judges, also can determine affiliated user's group by the ID sign or the IP address of call subscriber terminal earlier, judge again whether the called subscriber also belongs to this user's group.Promptly when utilizing called subscriber's IP address, can realize equally can realizing the judgement of Media Stream Bypass, but not recommend this kind method.In the time can obtaining the id information of user terminal, should be at first serve as according to carrying out the processing of call flow with the id information of user terminal.
In the call flow based on the VoIP agreement of reality, above-mentioned agent side user is as comprising the mutual of a plurality of messages in the flow process of caller, just judge after the user's group that whether belongs to same Media Stream Bypass, might not carry out the replacement or the reservation of address immediately, but this information is noted, in the follow-up mutual message of physical medium stream address information, just this information be can use, the replacement of address or the reservation of address carried out with decision.
In a call flow, may there be a plurality of agencies between calling subscriber and the called subscriber, in this case, can realize the bypass of Media Stream equally according to method provided by the present invention.Promptly when message is acted on behalf of through each, obtain the positional information of user terminal in the message, then according to the positional information of obtainable each user terminal judge whether calling subscriber and called subscriber belong to same user's group, and replace according to whether result's decision of judging carries user terminal in signaling message Media Stream address information, proceed call treatment at last.
More than the method for realization Media Stream Bypass provided by the present invention is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1, a kind of method that realizes Media Stream Bypass is characterized in that:
1) obtain the positional information of call subscriber terminal and called user terminal from message, described positional information is User Identity information or IP address information;
2) judge according to described positional information whether call subscriber terminal and called user terminal belong to the same user's group that presets, if call subscriber terminal and called user terminal belong to same user's group, the Media Stream address of then keeping the agent side user terminal remains unchanged, otherwise the Media Stream address of agent side user terminal is replaced with agency's address;
3) carry out call treatment;
Described user's group is the set that needs the user of realization Media Stream Bypass, and this set is made up of the user who has direct intercommunication ability at the IP layer.
2, the method for realization Media Stream Bypass as claimed in claim 1, it is characterized in that, the described process of obtaining the positional information of call subscriber terminal and called user terminal of step 1) is: the identify label of at first obtaining the user is as user position information, in the time that described identify label can't be obtained, obtain user's IP address as user position information.
3, the method for realization Media Stream Bypass as claimed in claim 2, it is characterized in that also comprising: when positional information is user's IP address, judge whether call subscriber terminal and called user terminal belong to same agency, if, then according to the call information of the IP address reverse find call subscriber terminal that obtains, and from this call information, obtain the identification information of this call subscriber terminal.
4, the method for realization Media Stream Bypass as claimed in claim 1 or 2 is characterized in that step 2) the described process of judging whether call subscriber terminal and called user terminal belong to the same user group that presets is specially:
21) user of selection one agent side determines that according to this user position information the user under this user organizes;
22) judge whether another user belongs to the affiliated user's group of this agent side user.
5, the method for realization Media Stream Bypass as claimed in claim 1, it is characterized in that: before step 1), also comprise the step that generates user's group table, comprise the User Identity territory that need carry out Media Stream Bypass in described user's group table, and the pairing IP address field in this User Identity territory.
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| CNB2004100570213A CN100353720C (en) | 2004-08-20 | 2004-08-20 | Method for realizing media stream bypass |
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| CNB2004100570213A CN100353720C (en) | 2004-08-20 | 2004-08-20 | Method for realizing media stream bypass |
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| CN100353720C true CN100353720C (en) | 2007-12-05 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100479417C (en) | 2005-09-02 | 2009-04-15 | 华为技术有限公司 | Communication method preventing circumbendibus of media-flow |
| CN100493038C (en) | 2006-05-26 | 2009-05-27 | 华为技术有限公司 | Method and system for alternating medium-flow during process of terminal talk |
| CN100563358C (en) | 2006-05-31 | 2009-11-25 | 华为技术有限公司 | A kind of system, Apparatus and method for of tackling mobile exchanging node fault |
| CN101247386B (en) * | 2007-02-16 | 2011-05-11 | 华为技术有限公司 | Media stream capturing method, system and device |
| CN101867575B (en) * | 2010-05-31 | 2015-08-19 | 中兴通讯股份有限公司 | A kind of media hairpin connection method of inter-network element and system |
| CN103139156B (en) * | 2011-11-28 | 2016-09-07 | 中国移动通信集团公司 | A kind of Media Stream Bypass implementation method and equipment |
| CN102905201B (en) * | 2012-10-12 | 2015-08-19 | 中国联合网络通信集团有限公司 | The session service control method of EPON and optical line terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298592A (en) * | 1998-04-27 | 2001-06-06 | 因特纳普网络服务公司 | Establishing connectivity in networks |
| WO2002021857A1 (en) * | 2000-09-05 | 2002-03-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Call looping prevention |
| US20030027595A1 (en) * | 2001-07-31 | 2003-02-06 | Ejzak Richard Paul | Provision of services in a communication system including an interworking mobile switching center |
| CN1489354A (en) * | 2002-10-09 | 2004-04-14 | ����ͨѶ�ɷ�����˾ | Method and system for realizing inter communication of telecommunication business between isomerized networks |
| CN1509085A (en) * | 2002-12-15 | 2004-06-30 | 华为技术有限公司 | Method for realizing routing for next-generation network |
-
2004
- 2004-08-20 CN CNB2004100570213A patent/CN100353720C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298592A (en) * | 1998-04-27 | 2001-06-06 | 因特纳普网络服务公司 | Establishing connectivity in networks |
| WO2002021857A1 (en) * | 2000-09-05 | 2002-03-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Call looping prevention |
| US20030027595A1 (en) * | 2001-07-31 | 2003-02-06 | Ejzak Richard Paul | Provision of services in a communication system including an interworking mobile switching center |
| CN1489354A (en) * | 2002-10-09 | 2004-04-14 | ����ͨѶ�ɷ�����˾ | Method and system for realizing inter communication of telecommunication business between isomerized networks |
| CN1509085A (en) * | 2002-12-15 | 2004-06-30 | 华为技术有限公司 | Method for realizing routing for next-generation network |
Non-Patent Citations (2)
| Title |
|---|
| 虚拟网划分方式及通讯 钟琦，朱雪琴.江西教育学院学报(综合)，第25卷第3期 2004 * |
| 计算机网络互连技术 陈江，汪齐贤.北方交通大学学报，第19卷第1期 1995 * |
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