CN1889578A - Communication control method, apparatus and system - Google Patents
Communication control method, apparatus and system Download PDFInfo
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- CN1889578A CN1889578A CN 200610106743 CN200610106743A CN1889578A CN 1889578 A CN1889578 A CN 1889578A CN 200610106743 CN200610106743 CN 200610106743 CN 200610106743 A CN200610106743 A CN 200610106743A CN 1889578 A CN1889578 A CN 1889578A
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Abstract
A communication-controlling method includes passing media stream transmitted between the first terminal and the second terminal through preset node, carrying out control on media stream by said node according to command of core control device. The communication control device and the communication control system for realizing said method are also disclosed.
Description
Technical field
The present invention relates to the communication technology, relate in particular to Communication Control Technology.
Background technology
The professional impetus that presents fast development in the whole world of NGN (Next Generation Network, next generation network), VoIP (Voice over IP, IP phone) has been brought great challenge to Plain Old Telephone Service.Yet network security problem is the bottleneck of internet development always, has inherited the fragility of IP network based on the NGN of IP technology, and VoIP and NGN have suffered the puzzlement of numerous safety problems.
Charge cheat between the PC is one of security threat of facing of VoIP and NGN, especially in the NGN network, because control is separated from each other with carrying, signaling flow and Media Stream are separated from each other, and the malice terminal may still be carried out the communication of Media Stream after the signaling of initiating the termination session.Fig. 1 is the schematic diagram of charge cheat.In VoIP and NGN network, after terminal sent session foundation request, described terminal was carried out the negotiation of session ability with distant terminal, if connect by mutual consent, charge system begins to charge, if side's terminal is sent the request that stops session, charge system just stops to charge.In SIP (Session InitialProtocol, session initiation protocol) message, if the opposite end has sent 200 OK message, charge system begins to charge, if core control equipment receives BYE message, charge system stops to charge.If two terminals are the malice terminal, then one of them terminal just may forge and send BYE message and not stop the transmission of Media Stream, still carry out Media Stream communication after the opposite end receives BYE message simultaneously, so at this moment, though charge system has stopped chargeing, but both sides' terminal is still communicating, thereby has cheated charge system, has caused massive losses to operator.Therefore, prevent that charge cheat from also becoming the index that deployment NGN network can not be ignored.
At present, a kind of means that prevent charge cheat are that SBC (Session BorderController is set at the edge of network, Session Border Controller), SBC be all turnover information flows of networks or Media Stream must through passage, it especially carries out validity checking to signaling flow to passing packet, the signaling message that will conform with rule is handed to the core control equipment processing, and Media Stream is transmitted.
But SBC handles signaling flow, very easily is subjected to the attack of signaling flow, and if SBC is under attack, just lost efficacy probably, and then the means that cause preventing charge cheat also lost efficacy.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of communication control method, under the prerequisite of avoiding signaling flow to attack, reaches the purpose that prevents charge cheat by the control to Media Stream.
For solving the problems of the technologies described above, the invention provides a kind of communication control method, comprising: the node of the Media Stream that transmits between first terminal and second terminal through setting in advance; Described node is controlled Media Stream according to the order of core control equipment.
The process that described node is controlled Media Stream according to the order of core control equipment comprises: described node stops the transmission of the Media Stream between first terminal and second terminal after receiving the order of the termination communication that core control equipment sends.
The mode that stops the media flow transmission between first terminal and second terminal comprises: close at least one for the port of open-destination and/or abandon the packet that terminal is sent.
The process of the node that the Media Stream process of transmitting between first terminal and second terminal sets in advance is realized by following step: first terminal is sent call request to second terminal; Selected address of node is revised as in address in the solicited message that core control equipment sends first terminal, and it is the port information of second Terminal Service that port information is revised as in the described node, and amended solicited message is sent to second terminal; If second terminal is accepted the request of first terminal, then send the information of accepting request to first terminal; The opening of core control equipment notice node is first terminal and the selected port of second terminal, the address of node is revised as in address in the information of accepting request, it is the port information of first Terminal Service that port information is revised as in the described node, and the amended information of accepting request is sent to first terminal.
The present invention also provides a kind of communication control unit, comprising: key control unit is used to handle the signaling that core control equipment sends; The media relays processing unit is used for according to the media flow transmission between two terminals of order control of described key control unit.
The signaling that described key control unit is handled comprises: the signaling of media flow transmission port is opened in the core control equipment order; And/or the signaling of core control equipment announcement session end; And/or the state information of reporting described device to core control equipment of property at interval.
Described media relays processing unit also is used for: the legitimacy of check Media Stream; And/or both sides' end message that will transmit illegal Media Stream is reported to described key control unit.
Described device also comprises: the flow analysis unit is used for the flow of the Media Stream of the described device of flowing through is carried out statistical analysis; Flow controlling unit is used for according to the data of described flow analysis element analysis the flow of the Media Stream of the described device of flowing through being controlled; And/or the bandwidth coordination unit, be used to coordinate the bandwidth between the heterogeneous networks territory; And/or the status report unit, what be used for the interval property reports the state that described device is current to core control equipment, and produces daily record and report for abnormal conditions; And/or Lawful Interception interface: be used for providing platform interface, so that described legal monitoring device is controlled in real time to network traffics to legal monitoring device.
The present invention also provides a kind of communication control system, comprises core control equipment, also comprises: at least one media relays forwarding unit is used for according to the order of described core control equipment the Media Stream that transmits between two terminals being controlled; Wherein, the Media Stream that transmits between described two terminals is through described at least one media relays forwarding unit.
Described at least one media relays forwarding unit at interval property report current state information to described core control equipment.
Described core control equipment provides the port information of described two terminals and the port information that described selected media relays forwarding unit need shine upon to selected media relays forwarding unit.
Described core control equipment is used to handle the state information that the signaling that sends to selected media relays forwarding unit and selected media relays forwarding unit return, and/or, be used to safeguard the state information of all media relays forwarding units.
Described core control equipment is used for the signaling deciphering to encrypting.
In the present invention, node or media relays forwarding unit are controlled Media Stream according to the order of core control equipment, not only avoid suffering the attack of the signaling flow of malice terminal, also Media Stream itself has been controlled, effectively prevented the generation of charge cheat situation.
By being provided with in the method that SBC prevents charge cheat, SBC must be in network edge, dispose comparatively fixing, and in the present invention, node or media relays forwarding unit can be according to concrete application deployment at network internal or network edges, for actual networking provides numerous embodiments.
By being provided with in the method that SBC prevents charge cheat, SBC need handle signaling, if but signaling encrypt, SBC then can not decipher signaling, so the effect of SBC will be lost efficacy.And in the present invention, node or media relays forwarding unit are controlled Media Stream according to the order of core control equipment, and core control equipment can be decrypted the signaling of encrypting, so, even the signaling in the system is encrypted, can not influence the control of node or media relays forwarding unit to Media Stream yet.
Communication control unit of the present invention has flow analysis unit and flow controlling unit, and the flow to Media Stream that can be real-time carries out statistical analysis and control.
Communication control unit of the present invention has the Lawful Interception unit, is convenient to the Lawful Interception of legal monitoring device realization to Media Stream, and user network medium flow is controlled in real time.
Communication control unit of the present invention has the bandwidth coordination unit, has optimized network bandwidth resources, makes the communication transparence.
Description of drawings
Fig. 1 is the charge cheat schematic diagram;
Fig. 2 is the flow chart of the present invention's invention;
Fig. 3 is the structural representation of apparatus of the present invention;
Fig. 4 is the structural representation of system of the present invention.
Embodiment
Below we will be in conjunction with the accompanying drawings, optimum implementation of the present invention is described in detail.At first it is to be noted, the implication of the term of using among the present invention, words and claim can not only only limit to its literal and common implication and go to understand, the implication and the notion that also comprise and then conform to technology of the present invention, this is because we are as the inventor, to suitably provide the definition of term, so that the most appropriate description is carried out in our invention.Therefore, the configuration that provides in this explanation and the accompanying drawing is first-selected embodiment of the present invention, rather than will enumerates all technical characteristics of the present invention.We will recognize to also have the various equivalent scheme or the modifications that can replace our scheme.
The overall plan of communication control method provided by the invention is: the node of the Media Stream that transmits between two terminals through setting in advance, Media Stream is controlled according to the order of core control equipment by node.We can also be called node the media relays forwarding unit, and in addition, core control equipment is made a general reference switch control devices such as various gatekeepers, SoftSwitch, acting server, communication controler.
According to the overall plan of said method, calling procedure can be realized by following steps:
Core control equipment sends to the other side after the request message of two terminals is handled, and the address of media relays forwarding unit is appointed as in session the other side's address, session the other side's Media Stream communication port is appointed as the particular port of media relays forwarding unit;
Core control equipment order media relays forwarding unit is opened corresponding ports;
The media relays forwarding unit is transmitted the Media Stream of same session according to the port numbers that consults;
If core control equipment is received the session termination messages, then send the order that stops media flow transmission to the media relays forwarding unit, the media relays forwarding unit disconnects Media Stream according to stopping order.
Typical call flow with Session Initiation Protocol is an example, SDP (the Session Description Protocol of both sides' port capability negotiation in Invite (request) and 200 OK message, Session Description Protocol) finish in, core control equipment adopts SoftSwitch (SoftSwitch).For reducing the interaction times between media relays forwarding unit and the SoftSwitch, SoftSwitch disposable media relays forwarding unit of informing after receiving 200 OK need be the port numbers of two open-destinations.The media relays forwarding unit regularly sends HEARTBEAT (heartbeat message) to SoftSwitch and reports its running status, monitors its state for SoftSwitch.In conjunction with Fig. 2, this typical call flow is described now.
Step S201: user terminal A is sent call request to user terminal B, controls via SoftSwitch.As shown in Figure 2, the Invite message sent of user terminal A is at first handled by SoftSwitch.
Step S202:SoftSwitch sends 100 trying to user terminal A, shows the request of handling.
Step S203:SoftSwitch is chosen to be the media relays forwarding unit of this conversational services, and the SDP part among the modification Invite, " c=" part is revised as selected media relays forwarding unit address, with RTP (Realtime Transfer Protocol, RTP) port information is revised as the RTP serve port of serving for user terminal B in the media relays forwarding unit, sends to user terminal B then.
Step S204, step S205: user terminal B is to the user terminal A playing RBT.
Step S206: user terminal B off-hook, accept the request of A, send 200 OK to SoftSwitch.
Step S207:SoftSwitch notice media relays forwarding unit is this conversational services, and notifies it open for the selected RTP Media Stream communication port of terminal, informs media relays forwarding unit port mapping information.
Step S208: respond SoftSwitch message, inform that the open service port is successful.
Step S209:SoftSwitch revises the SDP part among 200 OK, " c=" field is revised as selected media relays forwarding unit address, the RTP port information is revised as the RTP port of serving for user terminal A in the media relays forwarding unit, issues user terminal A then.
Step S210, step S211: user terminal A is returned confirmation.
So far, calling procedure finishes, and begins by media relays forwarding unit media stream between user terminal A and the user terminal B.But charge cheat generally occurs in a user terminal after core control equipment sends the termination conversation message, thus please continue with reference to Fig. 2, to how preventing that charge cheat from describing.
Step S212: user terminal B on-hook, send Bye message to SoftSwitch.
Step S213:SoftSwitch sends the control command of interrupting media session to the media relays forwarding unit.
Step S214: the media relays forwarding unit provides receives the response simultaneously, interrupts the Media Stream between user terminal A and the B.
Step S215:SoftSwitch issues user terminal A with Bye message, informs that its session terminates.
Step S216, step S217: user terminal A tells user terminal B that session stops successfully.
In the above-described embodiments, the address that core control equipment is revised as the media relays forwarding unit by " C=" field with the SDP part, port numbers is also carried out corresponding modification, thereby make the Media Stream of transmission must pass through the media relays forwarding unit, in this case, when a user terminal sent BYE message request termination session, core control equipment notice media relays forwarding unit stopped the transmission of both sides' Media Stream, and the media relays forwarding unit just can stop the forwarding of Media Stream.Because the media relays forwarding unit is not controlled by any terminal, so still send the RTP bag even the media relays forwarding unit stops forwarding the back terminal, both sides still can not communicate by letter, thereby have prevented charge cheat.
In addition, after setting up medium conversations, the media relays forwarding unit also at interval property to core control equipment report media flow transmission state, user's intercommunication state and network circulation status, so that core control equipment Control Network communication further.
Because session both sides' media flow transmission need be undertaken by the media relays forwarding unit, therefore, the both sides' Media Stream how the media relays forwarding unit is discerned in the same session becomes the problem that must solve, and the present invention takes the mode of port mapping.In order to realize port mapping, the media relays forwarding unit must obtain relevant information by core control equipment, and specifying information is as follows:
Open in the step of corresponding port at core control equipment indication media relays forwarding unit, be among the above-mentioned steps S207, two mapping four-tuple of the information such as port that core control equipment must need shine upon session both sides IP port information and media relays forwarding unit send to the media relays forwarding unit, the media relays forwarding unit is known the Media Stream port that session both sides and needs provide for both sides according to two four-tuple, and carries out certain session control.If both sides are respectively A, B, media relays forwarding unit are M, and then the content of two four-tuple is as shown in table 1.
| A_IP | A_Port | M_IP1 | M_Port1 |
| M_IP2 | M_Port2 | B_IP | B_Port |
Table 1 session both sides four-tuple
Wherein, A_IP is the IP address of terminal A, A_Port is for consulting back A as the port that transmits rtp streaming, M_IP1 or M_IP2 are the IP address for terminal A and B performance of media relays forwarding unit, and M_IP1 and M_IP2 can be identical, also can be different, M_Port1 offers the RTP serve port of A for the media relays forwarding unit, M_Port2 offers the RTP serve port of B for the media relays forwarding unit, and M_Port1 and M_Port2 can be identical, also can be different.B_IP is the IP address of terminal B, and B_Port is for consulting back B as the port that transmits rtp streaming.After the media relays forwarding unit is received these two four-tuple, if the media relays forwarding unit receives from the A_IP port to be the rtp streaming of A_Port at the M_Port1 of M_IP1 port, then the source IP address with this rtp streaming changes self IP address M_IP2 into, source port changes M_Port2 into, purpose IP address changes B_IP into, destination interface changes B_Port into, it is rtp streaming is transmitted to B_IP by M_IP2 and M_Port2 port B_Port port, equally, also handle accordingly after receiving the rtp streaming of B, finish the port mapping that Media Stream is transmitted.If core control equipment notifies this mapping to lose efficacy, the media relays forwarding unit is then deleted this mapping.
Core control equipment can adopt any agreement to control the media relays forwarding unit, comprises adopting custom protocol or MGCP agreements such as (Media Gateway Control Protocol, MGCPs).
The invention also discloses a kind of communication control unit, now in conjunction with Fig. 3, the device that the present invention is proposed describes.
As shown in Figure 3, communication control unit 301 comprises: core processing unit 3011 and media relays processing unit 3012, these two unit are communication control unit 301 necessary functional units.In addition, communication control unit 301 also can comprise: flow analysis unit 3013, flow controlling unit 3014, bandwidth coordination unit 3015, status report unit 3016 and Lawful Interception interface 3017.
Now these unit are described respectively.
Core processing unit 3011 is used to handle the control signaling that core control equipment sends and makes corresponding response, coordinates communication and normal operation between other each unit simultaneously.The signaling that core processing unit 3011 must be handled comprises: the signaling of media flow transmission port is opened in the core control equipment order, if after communication control unit 301 is received this signaling, then open corresponding ports, uses in order to media delivery; The signaling that the core control equipment announcement session finishes, if after communication control unit 301 is received this signaling, the media communication between the disconnected end immediately.The signaling of core processing unit 3011 optional processing comprises: property sends heartbeat message to report its state information to core control equipment at interval; With communicating by letter between the optional function unit etc.
Media relays processing unit 3012 is used for that the Media Stream of setting up session is carried out relaying and transmits, and in addition, can also be used for Media Stream is carried out legitimate verification and control.The action that media relays processing unit 3012 must be carried out comprises: accept the Media Stream that sends from a terminal, the mapping relations that this Media Stream self is set up according to the mapping mode or the communication control unit 301 of core control equipment appointment are forwarded to another terminal of same session.The action of media relays processing unit 3012 optional execution comprises: the legitimacy of check Media Stream; Both sides' information of illegal media stream is reported to core processing unit 3011 etc.
Flow analysis unit 3013: be used for the medium flow of the communication control unit 301 of flowing through is carried out detailed statistical analysis, provide data for further handling.
Flow controlling unit 3014 is used for according to the data that flow analysis unit 3013 produces Media Stream being carried out control corresponding, guarantees the QoS (Quality of Service, service quality) of Media Stream communication.
Bandwidth coordination unit 3015 is used for the not bandwidth between the same area of dynamic coordinate, makes the communication transparence.When communication control unit 301 was in different network domains borders, the network reservation bandwidth may be different, and the communication between two territories will run into bottleneck problem on the border so.Bandwidth coordination unit 3015 just can solve such problem.
Status report unit 3016 is used for current communications status also can producing daily record and report to abnormal conditions to the core control equipment time-triggered report.
Lawful Interception interface 3017 is used for providing a platform interface to legal monitoring device, so that the user network flow is controlled in real time.
Communication control unit 301 can be called the media relays forwarding unit, its each functional unit can be cooperated well, the media relays forwarding unit also has good scalability, can add new functional unit easily to adapt to the network environment of continuous development and change, especially after the safety of Media Stream is expanded, not only want to guarantee proper communication, also will realize secure communication simultaneously.
The present invention also provides a kind of communication control system, and now in conjunction with Fig. 4, the system that the present invention is proposed describes.
As shown in Figure 4, communication control system comprises core control equipment S401 and at least one media relays forwarding unit S402, certainly, communication system also comprises router S403, core control equipment S401 is arranged in the core Control Network, media relays forwarding unit S402 is arranged in the backbone transport network, two PCs are respectively in Access Network separately, wherein, the Media Stream that transmits between two terminals is through at least one media relays forwarding unit S402, and media relays forwarding unit S402 controls the Media Stream that transmits between two terminals according to the order of core control equipment S401.
Media relays forwarding unit S402 is deployed with multiple mode, and it can be integrated on media gateway, the acting server, also can be used as separate equipment and disposes.In the time of on being integrated in media gateway or acting server, the partial function of media relays forwarding unit S402 can unite two into one with the function of media gateway or acting server.
Media relays forwarding unit S402 generally is deployed in the edge in each territory and the inside in territory, and concrete quantity can determine according to practical application.When a plurality of media relays forwarding unit S402, core control equipment S401 can broadcast to the media relays forwarding unit S402 in its control range, the media relays forwarding unit S402 of survival responds core control equipment S401, and core control equipment S401 chooses suitable media relays forwarding unit S402 and is user's service.
When the user terminal of same area did not communicate, core control equipment S401 can preferentially select to be in the media relays forwarding unit S402 at edge, territory; And when same intra domain user terminal communication, the preferential media relays forwarding unit of selecting to be in of core control equipment S401 in the territory in, the Media Stream of control interior fields, thus realize the control that media relays forwarding unit S402 flows any network media.
Core control equipment S401 need add some functions to control media relays forwarding unit S402 effectively, wherein, mainly increases following two functions:
Signaling process function: the signaling that can produce control media relays forwarding unit S402, core control equipment S401 should produce corresponding information and send to media relays forwarding unit S402 in suitable, for example, after receiving 200 OK, order the open corresponding ports of media relays forwarding unit S402, the address of after receiving Invite message, the medium link address being revised as media relays forwarding unit S402.Simultaneously, core control equipment S401 also should handle the state report information that media relays forwarding unit S402 sends, to core control equipment S401 report, core control equipment S401 then upgrades the state information of inner sustain when withdrawing from use as media relays forwarding unit S402.
Safeguard the state information mapping table of media relays forwarding unit S402: need keep a state information table in core control equipment S401 inside, be used for storing the state information of each media relays forwarding unit S402, as address information (IPv4 or IPv6), operation information etc.Table 2 has provided the elementary field of media relays forwarding unit S402 Running Status Table.
| Sequence number | The M title | Address information | Running status | Update time |
| 1 | M1 | xxx.xxx.xxx.xxx | xx | xxx |
| 2 | M2 | xxx.xxx.xxx.xxx | xx | xxx |
| ... | ... | xxx.xxx.xxx.xxx | xx | xxx |
Table 2 media relays forwarding unit S402 running state information table
Wherein, sequence number is this unique identification, M is media relays forwarding unit S402, the description title of corresponding each the media relays forwarding unit S402 of M title, IP address or the domain-name information of this media relays forwarding unit of address information recording S402, running status is represented the residing state of media relays forwarding unit S402, as normal, cancellation, fault etc., represents the update time of current every value update time.
When core control equipment S401 revises SDP message, need the address information of this table of inquiry about media relays forwarding unit S402, in addition, when media relays forwarding unit S402 when core control equipment S401 reports its running state information, core control equipment S401 also needs this mapping table of real-time update.
Need to prove that these functions that core control equipment S401 increases can be integrated on the core control equipment S401, also can be finished by the autonomous device that is connected in series on the network, core control equipment S401 need not make any change.
Media relays forwarding unit S402 at interval property report its state information to core control equipment S401, the media relays forwarding unit S402 running state information table so that core control equipment S401 upgrades in time, and then select suitable media relays forwarding unit S402 to be user's service.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (13)
1. communication control method is characterized in that comprising:
The node of the Media Stream that transmits between first terminal and second terminal through setting in advance;
Described node is controlled Media Stream according to the order of core control equipment.
2. communication control method as claimed in claim 1, it is characterized in that the process that described node is controlled Media Stream according to the order of core control equipment comprises: described node stops the transmission of the Media Stream between first terminal and second terminal after receiving the order of the termination communication that core control equipment sends.
3. communication control method as claimed in claim 2 is characterized in that the mode that stops the media flow transmission between first terminal and second terminal comprises: close at least one for the port of open-destination and/or abandon the packet that terminal is sent.
4. communication control method as claimed in claim 1 is characterized in that the Media Stream that transmits between first terminal and second terminal realized by following step through the process of the node that sets in advance:
First terminal is sent call request to second terminal;
Selected address of node is revised as in address in the solicited message that core control equipment sends first terminal, and it is the port information of second Terminal Service that port information is revised as in the described node, and amended solicited message is sent to second terminal;
If second terminal is accepted the request of first terminal, then send the information of accepting request to first terminal;
The opening of core control equipment notice node is first terminal and the selected port of second terminal, the address of node is revised as in address in the information of accepting request, it is the port information of first Terminal Service that port information is revised as in the described node, and the amended information of accepting request is sent to first terminal.
5. communication control unit is characterized in that comprising:
Key control unit is used to handle the signaling that core control equipment sends;
The media relays processing unit is used for according to the media flow transmission between two terminals of order control of described key control unit.
6. communication control unit as claimed in claim 5 is characterized in that the signaling that described key control unit is handled comprises:
The signaling of media flow transmission port is opened in the core control equipment order; And/or
The signaling that the core control equipment announcement session finishes; And/or
The state information of reporting described device to core control equipment of property at interval.
7. communication control unit as claimed in claim 5 is characterized in that described media relays processing unit also is used for:
The legitimacy of check Media Stream; And/or
Both sides' end message of the illegal Media Stream of transmission is reported to described key control unit.
8. communication control unit as claimed in claim 5 is characterized in that also comprising:
The flow analysis unit is used for the flow of the Media Stream of the described device of flowing through is carried out statistical analysis;
Flow controlling unit is used for according to the data of described flow analysis element analysis the flow of the Media Stream of the described device of flowing through being controlled; And/or
The bandwidth coordination unit is used to coordinate the bandwidth between the heterogeneous networks territory; And/or
The status report unit, what be used for the interval property reports the state that described device is current to core control equipment, and produces daily record and report for abnormal conditions; And/or
Lawful Interception interface: be used for providing platform interface, so that described legal monitoring device is controlled in real time to network traffics to legal monitoring device.
9. a communication control system comprises core control equipment, it is characterized in that also comprising:
At least one media relays forwarding unit is used for according to the order of described core control equipment the Media Stream that transmits between two terminals being controlled;
Wherein, the Media Stream that transmits between described two terminals is through described at least one media relays forwarding unit.
10. communication control system as claimed in claim 9 is characterized in that: described at least one media relays forwarding unit at interval property report current state information to described core control equipment.
11. communication control system as claimed in claim 9 is characterized in that: described core control equipment provides the port information of described two terminals and the port information that described selected media relays forwarding unit need shine upon to selected media relays forwarding unit.
12. communication control system as claimed in claim 9, it is characterized in that: described core control equipment is used to handle the signaling that sends to selected media relays forwarding unit and reaches the state information that selected media relays forwarding unit returns, and/or, be used to safeguard the state information of all media relays forwarding units.
13. communication control system as claimed in claim 9 is characterized in that: described core control equipment is used for the signaling deciphering to encrypting.
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|---|---|---|---|
| CN 200610106743 CN1889578A (en) | 2006-07-28 | 2006-07-28 | Communication control method, apparatus and system |
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| CN 200610106743 CN1889578A (en) | 2006-07-28 | 2006-07-28 | Communication control method, apparatus and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459572B (en) * | 2007-12-13 | 2011-07-06 | 华为技术有限公司 | Method and apparatus for realizing related media stream in IP packet network |
| CN101483532B (en) * | 2008-01-10 | 2012-04-04 | 华为技术有限公司 | Method, system and device for media stream duplication |
| WO2013097093A1 (en) * | 2011-12-27 | 2013-07-04 | 华为技术有限公司 | Method and device for controlling user communications |
| CN105991856A (en) * | 2015-03-05 | 2016-10-05 | 李明 | VOIP routing based on RTP server-to-server routing |
-
2006
- 2006-07-28 CN CN 200610106743 patent/CN1889578A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459572B (en) * | 2007-12-13 | 2011-07-06 | 华为技术有限公司 | Method and apparatus for realizing related media stream in IP packet network |
| CN101483532B (en) * | 2008-01-10 | 2012-04-04 | 华为技术有限公司 | Method, system and device for media stream duplication |
| WO2013097093A1 (en) * | 2011-12-27 | 2013-07-04 | 华为技术有限公司 | Method and device for controlling user communications |
| CN103548312A (en) * | 2011-12-27 | 2014-01-29 | 华为技术有限公司 | Method and device for controlling user communications |
| CN103548312B (en) * | 2011-12-27 | 2016-06-08 | 华为技术有限公司 | The method of control user's communication and device |
| CN105991856A (en) * | 2015-03-05 | 2016-10-05 | 李明 | VOIP routing based on RTP server-to-server routing |
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