CN1642117A - Method for realizing monitoring based on soft switch - Google Patents
Method for realizing monitoring based on soft switch Download PDFInfo
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- CN1642117A CN1642117A CN 200410062444 CN200410062444A CN1642117A CN 1642117 A CN1642117 A CN 1642117A CN 200410062444 CN200410062444 CN 200410062444 CN 200410062444 A CN200410062444 A CN 200410062444A CN 1642117 A CN1642117 A CN 1642117A
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Abstract
The invention discloses a monitoring method based on soft switching, containing: object user establishes call, and MGC and monitoring system establish call through the interaction of SIP protocol information; MG reports communication content of the object user to the monitoring system. it adopts standard SIP protocol as communication standard between the monitoring system and the MGC, and also defines an SIP protocol-based simplified flow; also clears about the bearing mode of the MG sending communication content of an object user to the monitoring system, and makes the legal monitoring based on soft switching have good standard and extendibility and makes monitoring interface have universality.
Description
Technical field
The present invention relates to monitoring technique, be meant a kind of method that realizes monitoring based on soft switch especially.
Background technology
Along with development of Communication Technique, traditional switching equipment progressively develops into carrying, controls the framework that is separated, speech business is also progressively developed into by the circuit type voice of traditional Time Division Multiplexing can be carried on Internet protocol (IP) grouping of network voice, Content of Communication adopts RTP (RTP, Real-Time Transport Protocol) Liu mode is transmitted on IP network, and Content of Communication can be voice, multimedia service etc.Soft switch (Softswitch) technology like this, has just appearred.
Softswitch technology is to realize the core technology of voice communication of new generation and multimedia and data interaction.Softswitch technology has embodied control/business and the thought that carrying is separated, and as the SoftSwitch of controlled entity, finish functions such as call proceeding, professional control and user management, and the transmission of service media stream is finished by IP network.
Media Gateway Controller (MGC, Media Gateway Controller) be the nucleus equipment in the Softswitch technology, it is positioned at the control aspect of next generation network, mainly finish and call out functions such as control, authentication and mandate, charging, business provide, interconnect, any business all needs media gateway, and (MG MediaGateway) realizes under the control of MGC.MG can become the media format conversion in a kind of network the desired media formats of another kind of network, and MGC is according to the signaling control MG establishment of connection and the release of receiving.
Along with the generation of increasing terrorist incident and major crimes incident, the national security problem shows its importance day by day.At present, the telecommunications Lawful Interception comes into one's own in international community day by day as an important component part of national security measure, many countries have proposed requirement with the form of legislation, for example: Japan came into effect " communication intercept method " on August 15th, 2000, according to this law, national structure can be to the targeted customer of appointment, monitor and tackle as suspect's phone, fax and Email, simultaneously, also require the service provider that the means of its data of monitoring and speech line must be provided to actuator.
Because it is not long to carry the time of core packet network technology maturation independently, the also unexecuted large-scale commercialization of Softswitch technology, therefore, related protocol has just been done description roughly to the monitoring that realizes based on soft switch, does not provide implementation method and concrete realization flow at all.For the Lawful Interception of realizing based on soft switch, when especially carrying out Lawful Interception, the communication mode that adopts between switching equipment and the monitoring system, still there is not at present concrete, general solution to exist, each company mainly by proprietary protocol as interim solution, realize communicating by letter between switching equipment and the monitoring system.
Like this, in the existing monitoring that realizes based on soft switch, the call control department branch can only adopt proprietary protocol, for example, self-defined tunneling mechanism, transmit targeted customer's Content of Communication by self-defining tunnel, expansion with the follow-up monitor function of restriction, cause monitoring the widely different of interface, do not have unified standard, make the adaptability and all non-constant of inheritance of the monitoring interface between monitoring system and the switching equipment, simultaneously in order to make switching equipment provide monitor function to monitoring system, need carry out the change of a large amount of nonstandardized techniques to switching equipment, make the monitoring that realizes based on soft switch not have standard.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method of monitoring based on the soft switch realization, make the Lawful Interception of realizing based on soft switch have good standard and autgmentability.
In order to achieve the above object, the invention provides a kind of method of monitoring based on the soft switch realization, preestablish the targeted customer who is monitored, the method includes the steps of:
A, targeted customer set up calling, and MGC and monitoring system are called out by the mutual foundation of Session Initiation Protocol format messages;
B, MG report targeted customer's Content of Communication to monitoring system.
MGC described in the steps A and monitoring system are called out by the mutual foundation of Session Initiation Protocol format messages, may further comprise the steps:
A1, MGC add message related to calls to the invitation that monitoring system sends the Session Initiation Protocol form;
A2, monitoring system are returned 200 OK response to MGC after receiving and inviting the adding message related to calls;
A3, MGC return response message to monitoring system after receiving 200 OK response.
Invitation described in the steps A 1 adds the SDP that carries MG in the message related to calls and describes;
Carry the negotiation result of SDP in the 200 OK response described in the steps A 2.
Carry the calling association identification that is used for associated objects user's communications content and life event in the invitation adding message related to calls described in the steps A 1.
The extended head that adds message related to calls by the invitation described in the steps A 1 carries described calling association identification.
Carry the MGC sign in the invitation adding message related to calls described in the steps A 1, or the monitoring system sign, or calling number, or called number, or the above more than one combination.
Described step B is: MG reports targeted customer's Content of Communication to monitoring system by the rtp streaming of reference format.
Described rtp streaming is carried on the IP network.
Carry the direction of transfer of targeted customer's Content of Communication in the described rtp streaming.
This method further comprises:
The calling that C1, MGC and monitoring system have been set up by the interactive modifying of Session Initiation Protocol format messages.
Described step C1 may further comprise the steps:
C11, MGC carry call property to the modification message related to calls of monitoring system transmission Session Initiation Protocol form in this modification message related to calls;
C12, monitoring system are revised the calling of having set up according to call property after receiving and inviting the adding message related to calls, return 200 OK response to MGC then;
C13, MGC return response message to monitoring system after receiving 200 OK response.
This method further comprises:
C2, MGC and monitoring system are by the mutual call release of Session Initiation Protocol format messages.
Described step C2 may further comprise the steps:
C21, targeted customer's call release, MGC send the end call message of Session Initiation Protocol form to monitoring system;
After C22, monitoring system are received end call message, return 200 OK response, discharge the calling of having set up then to MGC.
This method further comprises: cancel the setting to the targeted customer who is monitored.
According to the proposed method, the Session Initiation Protocol that adopts standard is as the standard that communicates between monitoring system and the MGC, and also defined the simplification flow process based on Session Initiation Protocol among the present invention; Also clear and definite MG transmits the bearing mode of targeted customer's Content of Communication among the present invention to monitoring system, by utilizing the agreement of ripe standard, make the Lawful Interception of realizing based on soft switch have good standard and autgmentability, make the monitoring interface have versatility, need not switching equipment is made amendment, be beneficial to very much the fusion of subsequent fixed communication network switching equipment and mobile communications network switching equipment.
Description of drawings
Fig. 1 is an implementation schematic diagram of the present invention;
Fig. 2 is a target setting user flow chart;
Fig. 3 sets up call flow diagram for MGC and monitoring system;
Fig. 4 is that MGC and monitoring system are revised call flow diagram;
Fig. 5 is that MG transmits targeted customer's Content of Communication schematic diagram to monitoring system;
Fig. 6 is MGC and monitoring system call release flow chart;
Fig. 7 is a query aim user flow chart;
Fig. 8 is cancellation targeted customer flow chart.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is an implementation schematic diagram of the present invention, as shown in Figure 1, among the present invention, behind the targeted customer that setting is monitored, when the targeted customer sets up calling, utilize the Session initiation Protocol (SIP of standard, SessionInitiated Protocol) sets up calling between MGC and the monitoring system, after setting up calling, by the control of MG according to MGC, transmit targeted customer's Content of Communication with the form of rtp streaming to monitoring system, and the present invention defined the simplification flow process based on SIP, made the Lawful Interception of realizing based on soft switch have good standard and autgmentability.
Fig. 2 is a target setting user flow chart, and as shown in Figure 2, target setting user's implementation procedure may further comprise the steps:
Step 201: monitoring system sends the targeted customer to MGC and sets request, requires MGC target setting user.The targeted customer sets user ID of portability, the also a plurality of user ID of portability in the request; In addition, the targeted customer sets and goes back the monitoring attribute of portability corresponding to the targeted customer in the request, when requiring MGC target setting user, also need set corresponding monitoring attribute, require MGC intercept target user's video conference as monitoring system with this targeted customer.
After step 202:MGC receives that the targeted customer sets request, set the targeted customer of relative users for being monitored, relative users is added list of targeted subscribers, return the targeted customer to monitoring system then and set response, the notice monitoring system has been set at relative users the targeted customer who is monitored.
Behind the MGC target setting user, when the user called out by setting up, MGC judged whether this user belongs to list of targeted subscribers, if then MGC sets up calling with monitoring system when setting up calling for the targeted customer; Otherwise MGC only sets up calling for the user.
Fig. 3 sets up call flow diagram for MGC and monitoring system, and as shown in Figure 3, when the targeted customer sets up calling, MGC will set up calling with monitoring system, and MGC and monitoring system are set up the implementation procedure of calling out and be may further comprise the steps:
Step 301:MGC sends to invite to monitoring system and adds message related to calls (INVITE), carry among this INVITE and monitor required parameter, as description of the Session Description Protocol (SDP, Session DescriptionProtocol) of MGC sign, monitoring system sign, calling number, called number, parameters for authentication, MG etc.Increase an extended head simultaneously in inviting the adding message related to calls, be used for transmitting and call out association identification (CCC_ID), CCC_ID is used for associated objects user's communications content and life event.The grammer of this extended head can be following form:
X-LIC-CCCID＝“X-LIC-CCCID”HCOLON?1*DIGIT。
Step 302: after monitoring system is received INVITE, return 200 OK response messages, carry the negotiation result of SDP among this 200 OK to MGC.
After step 303:MGC receives 200 OK, return ACK message to monitoring system, the notice monitoring system has been received its response to INVITE, and like this, MGC sets up the calling with monitoring system.
The targeted customer's that MGC also can set according to monitoring system monitoring attribute, when the targeted customer sets up the calling relevant with monitoring attribute, the calling of foundation and monitoring system.
Fig. 4 is that MGC and monitoring system are revised call flow diagram, and as shown in Figure 4, when the targeted customer revises calling, MGC will revise calling with monitoring system, and MGC and monitoring system are revised the implementation procedure of calling out and be may further comprise the steps:
Step 401:MGC revises the calling of setting up, and sends to monitoring system then and revises message related to calls (re-INVITE), carries call property among this re-INVITE.
Step 402: after monitoring system is received re-INVITE, revise the calling of setting up according to call property, return 200 OK to MGC then, notice MGC successfully revises calling.
Step 403:MGC returns ACK to monitoring system after receiving 200 OK, and the notice monitoring system has been received its response to re-INVITE, like this, and the calling between MGC and monitoring system are successfully revised.
Fig. 5 is that MG transmits targeted customer's Content of Communication schematic diagram to monitoring system, as shown in Figure 5, MG transmits targeted customer's Content of Communication by the rtp streaming of reference format to monitoring system, and the rtp streaming that MG transmits to monitoring system carries the direction of transfer of targeted customer's Content of Communication.Rtp streaming is carried on the IP network, does not need to carry out extra expansion, promptly need not to go to realize by proprietary protocol, adopts standard agreement just can realize fully.In addition,, can adopt the security mechanism of IP network link layer,, increase the fail safe of targeted customer's Content of Communication transport process as IPSec for guaranteeing the fail safe of targeted customer's Content of Communication.
Fig. 6 is MGC and monitoring system call release flow chart, as shown in Figure 6, when targeted customer's call release, MGC will with the monitoring system call release, the implementation procedure of MGC and monitoring system call release may further comprise the steps:
Step 601:MGC sends end call message (BYE) to monitoring system, notice monitoring system call release.
Step 602: after monitoring system is received BYE, return 200 OK to MGC, notice MGC has received BYE, discharges the calling with MGC then.After MGC receives 200 OK, discharge calling with monitoring system.
Fig. 7 is a query aim user flow chart, and as shown in Figure 7, query aim user's implementation procedure may further comprise the steps:
Step 701: monitoring system sends targeted customer's query requests to MGC, requires MGC that targeted customer's relevant information is provided.Portability respective queries parameter in targeted customer's query requests, as list of targeted subscribers inquiry, certain targeted customer or the like, also can set default query argument is the list of targeted subscribers inquiry.
After step 702:MGC receives targeted customer's query requests, return targeted customer's inquiry response to monitoring system, carry respective queries information in this targeted customer's inquiry response, as according to the respective queries parameter of carrying in targeted customer's query requests, return list of targeted subscribers to monitoring system, or certain user's monitoring attribute or the like.
Fig. 8 is cancellation targeted customer flow chart, and as shown in Figure 8, cancellation targeted customer's implementation procedure may further comprise the steps:
Step 801: monitoring system sends the targeted customer to MGC and cancels request, requires the setting of MGC cancellation to the targeted customer.The targeted customer sets targeted customer of portability, the also a plurality of targeted customers of portability in the request.
After step 802:MGC receives that the targeted customer cancels request, cancellation is to respective objects user's setting, the user deletes from list of targeted subscribers with respective objects, returns the targeted customer to monitoring system then and cancels response, and the notice monitoring system has been cancelled respective objects user's setting.
Store list of targeted subscribers among the MGC, when monitoring system is set new during by the intercept target user, MGC just increases corresponding targeted customer in list of targeted subscribers, when monitoring system cancellation targeted customer, MGC is the corresponding targeted customer of deletion in list of targeted subscribers just.
In addition, monitoring system can be notified MGC deletion list of targeted subscribers, and cancellation is to all targeted customers' setting, and for example, monitoring system is cancelled request by sending the targeted customer who does not carry any parameter to MGC, and MGC deletes whole list of targeted subscribers in order to notice.
Above-described MGC can be grouping switching equipment such as Mobile Switching Center Server (MSC Server), GMSC (gateway mobile switching center) server (GMSC Server).
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (14)
1, a kind of method of monitoring based on the soft switch realization is characterized in that preestablish the targeted customer who is monitored, the method includes the steps of:
A, targeted customer set up calling, and MGC and monitoring system are called out by the mutual foundation of Session Initiation Protocol format messages;
B, MG report targeted customer's Content of Communication to monitoring system.
2, method according to claim 1 is characterized in that, MGC described in the steps A and monitoring system are called out by the mutual foundation of Session Initiation Protocol format messages, may further comprise the steps:
A1, MGC add message related to calls to the invitation that monitoring system sends the Session Initiation Protocol form;
A2, monitoring system are returned 200 OK response to MGC after receiving and inviting the adding message related to calls;
A3, MGC return response message to monitoring system after receiving 200 OK response.
3, method according to claim 2 is characterized in that,
Invitation described in the steps A 1 adds the SDP that carries MG in the message related to calls and describes;
Carry the negotiation result of SDP in the 200 OK response described in the steps A 2.
4, method according to claim 2 is characterized in that, carries the calling association identification that is used for associated objects user's communications content and life event in the invitation adding message related to calls described in the steps A 1.
5, method according to claim 4 is characterized in that, the extended head that adds message related to calls by the invitation described in the steps A 1 carries described calling association identification.
6, according to claim 2,3 or 4 described methods, it is characterized in that, carry the MGC sign in the invitation adding message related to calls described in the steps A 1, or the monitoring system sign, or calling number, or called number, or the above more than one combination.
7, method according to claim 1 is characterized in that, described step B is: MG reports targeted customer's Content of Communication to monitoring system by the rtp streaming of reference format.
8, method according to claim 7 is characterized in that, described rtp streaming is carried on the IP network.
9, method according to claim 7 is characterized in that, carries the direction of transfer of targeted customer's Content of Communication in the described rtp streaming.
10, method according to claim 1 is characterized in that, this method further comprises:
The calling that C1, MGC and monitoring system have been set up by the interactive modifying of Session Initiation Protocol format messages.
11, method according to claim 10 is characterized in that, described step C1 may further comprise the steps:
C11, MGC carry call property to the modification message related to calls of monitoring system transmission Session Initiation Protocol form in this modification message related to calls;
C12, monitoring system are revised the calling of having set up according to call property after receiving and inviting the adding message related to calls, return 200 OK response to MGC then;
C13, MGC return response message to monitoring system after receiving 200 OK response.
12, method according to claim 1 is characterized in that, this method further comprises:
C2, MGC and monitoring system are by the mutual call release of Session Initiation Protocol format messages.
13, method according to claim 12 is characterized in that, described step C2 may further comprise the steps:
C21, targeted customer's call release, MGC send the end call message of Session Initiation Protocol form to monitoring system;
After C22, monitoring system are received end call message, return 200 OK response, discharge the calling of having set up then to MGC.
14, method according to claim 1 is characterized in that, this method further comprises: cancel the setting to the targeted customer who is monitored.
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| CN 200410062444 CN1266885C (en) | 2004-07-07 | 2004-07-07 | Method for realizing monitoring based on soft switch |
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Cited By (13)
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| WO2008086639A1 (en) * | 2006-12-30 | 2008-07-24 | Huawei Technologies Co., Ltd. | System for voice interception of video phone services in a multi-media network |
| CN100414895C (en) * | 2005-10-26 | 2008-08-27 | 华为技术有限公司 | System and method for realizing legally monitoring |
| WO2009049538A1 (en) * | 2007-10-11 | 2009-04-23 | Huawei Technologies Co., Ltd. | Monitoring method, device and system |
| CN101488954A (en) * | 2009-01-09 | 2009-07-22 | 中兴通讯股份有限公司 | Speech monitoring method and access gateway |
| CN101297519B (en) * | 2005-10-25 | 2010-05-26 | 西门子公司 | Method and network elements for content duplication in packet networks |
| CN101163136B (en) * | 2006-10-09 | 2010-07-14 | 中兴通讯股份有限公司 | Method of broadcasting telephonist number using session inceptive protocol soft terminal |
| CN101237486B (en) * | 2008-02-26 | 2011-04-20 | 中兴通讯股份有限公司 | Device for converting TDM media into IP media and method for using this device |
| CN101237359B (en) * | 2008-02-27 | 2011-08-24 | 中兴通讯股份有限公司 | Monitoring system and method |
| CN101212719B (en) * | 2006-12-31 | 2011-12-28 | 华为技术有限公司 | Method and system for implementing converged message service in radio communication network |
| CN101043691B (en) * | 2007-04-28 | 2012-01-11 | 中兴通讯股份有限公司 | Legal monitor method for IMS network |
| CN105684381A (en) * | 2013-09-09 | 2016-06-15 | 诺基亚通信公司 | Apparatus and method for lawful interception |
| CN108650425A (en) * | 2018-05-15 | 2018-10-12 | 中国联合网络通信集团有限公司 | Monitor method and monitoring system |
| CN113286380A (en) * | 2021-07-20 | 2021-08-20 | 四川优家库信息技术有限公司 | Communication establishing method, communication method and system based on middleware and Freeswitch |
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| CN101297519B (en) * | 2005-10-25 | 2010-05-26 | 西门子公司 | Method and network elements for content duplication in packet networks |
| CN100414895C (en) * | 2005-10-26 | 2008-08-27 | 华为技术有限公司 | System and method for realizing legally monitoring |
| CN101163136B (en) * | 2006-10-09 | 2010-07-14 | 中兴通讯股份有限公司 | Method of broadcasting telephonist number using session inceptive protocol soft terminal |
| WO2008086639A1 (en) * | 2006-12-30 | 2008-07-24 | Huawei Technologies Co., Ltd. | System for voice interception of video phone services in a multi-media network |
| CN101406029B (en) * | 2006-12-30 | 2011-04-20 | 华为技术有限公司 | System and method for monitoring video-telephone service in multimedia network |
| CN101212719B (en) * | 2006-12-31 | 2011-12-28 | 华为技术有限公司 | Method and system for implementing converged message service in radio communication network |
| CN101043691B (en) * | 2007-04-28 | 2012-01-11 | 中兴通讯股份有限公司 | Legal monitor method for IMS network |
| WO2009049538A1 (en) * | 2007-10-11 | 2009-04-23 | Huawei Technologies Co., Ltd. | Monitoring method, device and system |
| CN101237486B (en) * | 2008-02-26 | 2011-04-20 | 中兴通讯股份有限公司 | Device for converting TDM media into IP media and method for using this device |
| CN101237359B (en) * | 2008-02-27 | 2011-08-24 | 中兴通讯股份有限公司 | Monitoring system and method |
| CN101488954A (en) * | 2009-01-09 | 2009-07-22 | 中兴通讯股份有限公司 | Speech monitoring method and access gateway |
| CN105684381A (en) * | 2013-09-09 | 2016-06-15 | 诺基亚通信公司 | Apparatus and method for lawful interception |
| CN108650425A (en) * | 2018-05-15 | 2018-10-12 | 中国联合网络通信集团有限公司 | Monitor method and monitoring system |
| CN108650425B (en) * | 2018-05-15 | 2021-03-19 | 中国联合网络通信集团有限公司 | Monitoring method and monitoring system |
| CN113286380A (en) * | 2021-07-20 | 2021-08-20 | 四川优家库信息技术有限公司 | Communication establishing method, communication method and system based on middleware and Freeswitch |
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