CN1882021A - Method and system for realizing long-distance operator insertion - Google Patents

Method and system for realizing long-distance operator insertion Download PDF

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Publication number
CN1882021A
CN1882021A CN200510125250.9A CN200510125250A CN1882021A CN 1882021 A CN1882021 A CN 1882021A CN 200510125250 A CN200510125250 A CN 200510125250A CN 1882021 A CN1882021 A CN 1882021A
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CN
China
Prior art keywords
operator
media gateway
message
indication message
toll
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Granted
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CN200510125250.9A
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Chinese (zh)
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CN100542196C (en
Inventor
李云惠
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN200510125250.9A priority Critical patent/CN100542196C/en
Priority to PCT/CN2006/002165 priority patent/WO2007059676A1/en
Publication of CN1882021A publication Critical patent/CN1882021A/en
Application granted granted Critical
Publication of CN100542196C publication Critical patent/CN100542196C/en
Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0093—Arrangements for interconnection between switching centres signalling arrangements in networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1225—Details of core network interconnection arrangements
    • H04M7/123—Details of core network interconnection arrangements where the packet-switched network is an Internet Protocol Multimedia System-type network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
    • H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/129—Details of providing call progress tones or announcements

Abstract

The invention relates to a method for realizing toll operator insertion, used in next generation network with Q931 protocol, wherein it comprises: when the exchanger receives the telephone call, and finds out the called terminal is in call; the exchanger sends TOF signal to media gateway which transforms the TOF signal to the operator prompt message; and sends the prompt message to the media gateway controller, to control the call of called terminal. The invention also provides a relative system, which comprises an exchanger for sending TOF signal to the media gateway; a media gateway for transforming the TOF message; and a media gateway controller for controlling the call based on the prompt message. The invention can realize R2 signal standard and the toll operator insertion via the R2/PRA transformation under NGN structure.

Description

The method and system that a kind of toll operator of realization inserts
Technical field
The present invention relates to a kind of communication technology, relate in particular to a kind of method and system that the toll operator inserts of in NGN (next generation network), realizing.
Background technology
The NGN network is the network that a kind of professional control and carrying media are separated, and professional control section can be realized that the bearing part can be realized by MGW (media gateway) by MGC (Media Gateway Controller).Generally adopting H.248 between MGC and the MGW, agreement realizes carrying is controlled.
Channel associated signalling is a kind of interoffice signaling, and the channel associated signalling of using has R2, R1, No5 etc. at present.Wherein R2 signaling is widely used in the switch model of many countries, each national R2 standard has generally all defined the toll operator and has inserted signaling, like this, when the NGN system equipment enters country variant market and docks with each model switch, just must support the different signaling standards of its definition, insert signaling as the operator.
PRA in ISDN (integrated services digital network) network (primary rate access) expression primary rate inserts, by E1 or T1 with isdn user's access network.Generally be used for PBX (privately owned switch) is linked into isdn network, its network layer can adopt Q.931 agreement of ITU-T.
TOF (toll operator's insertion) is that early stage switch system is used more a kind of call business control mode, refer generally to trunk call by operator's switching, when finding that the called subscriber is conversing, the operator is by the special TOF signal of interoffice signaling (as R2 signaling) definition, the notice switch starts the toll operator and inserts handling process, make the called subscriber can hear that long-distance insertion sound or operator enter Three-Way Calling, advise called subscriber has the toll traffic incoming call; When called subscriber's on-hook, the operator can be again allows called subscriber's ring or machine ringing by the TOF signal, enters conversation behind called subscriber's off-hook.
In the prior art, because network layer protocol ITU-T Q.931 series is connected foundation, maintenance and the removing of calling procedure etc., defined relatively abundanter message, information unit interface, can support the program of basic call control more all sidedly, the program of the calling control that support is relevant with the additional properties that network provides.Therefore, in the product of reality is used, often adopting Q.931, series is the basis, as the interface between system core call control process module and all types of relay process module, the user's processing module, for example Fig. 1 " call control process module " and the general controls Processing Interface between " PRA signaling processing module ".
As shown in Figure 2, for supporting the Q.931 NGN network of agreement of ITU-T, the MGW of embedded SG (SGW) function realizes the processing to physical layer and data link layer, with network layer Q.931 content carrying on IP/SCTP/IUA, communicate with MGC.PRA module among the MGC is responsible for handling Q.931 message content, and mutual by generalized calls control and treatment interface and call control process module, finishes the control and treatment of whole calling procedure.
In order to realize the different R2 signaling standard requirements of country variant, can do a signaling translation function at R2 signaling access point place, R2 signaling is converted to the PRA signaling, again Q.931 to insert MGC.The realization of this translation function can be used as individual components, can embeddedly be the part of MGW also, as shown in Figure 2.
The advantage of this implementation is that the otherness of country variant R2 standard is realized that shielding is at the R2/PRA boxcar, R2 standard requirement at certain concrete country, only need the different R2/PRA translation function of exploitation to get final product, other processing modules of MGW and MGC integral device, any modification that it goes without doing.Simultaneously, interface between MGC and the MGW is stable, needn't often change because of country variant R2 demand, helps the MGC of devices from different manufacturers, the butt joint compatibility between the MGW equipment, under the mode that the R2/PRA boxcar is realized with individual components, this advantage is more obvious.
Yet, this implementation also brings some defectives simultaneously and needs perfect improvement, be that TOF (Trunk Offering) toll operator that R2 signaling need be realized usually inserts demand, Q.931 do not have definition relevant message and information unit at ITU-T, thereby can not realize that the toll operator inserts function.
Summary of the invention
The purpose of this invention is to provide a kind of method and system that the operator inserts of in NGN, realizing.Can realize that in the NGN network operator inserts business.
The invention provides the method that a kind of toll operator of realization inserts, be applied to adopt in the next generation network of Q931 agreement, comprise: when switch is received call, and the terminal called of finding this calling is when conversing, switch sends the toll operator to media gateway and inserts signal, media gateway is inserted conversion of signals with the toll operator and is operator's Indication message, and operator's Indication message is issued Media Gateway Controller, with the calling of control terminal called.
Described operator's Indication message comprises that the operator indicates beginning message, operator to indicate end and operator to indicate ALERTING message.
Described operator's Indication message is the message that increases newly.
Described operator's Indication message can be arranged in the existing message.
Described operator's Indication message can be arranged in the NOTIFY.
The present invention also provides a kind of toll operator's insertion system that realizes in the next generation network that adopts the Q931 agreement, described system comprises:
Switch is used for sending the toll operator to media gateway and inserts signal;
Media gateway is used for the conversion that the toll operator inserts signal and operator's Indication message, and operator's Indication message is issued Media Gateway Controller;
Media Gateway Controller is used for operator's Indication message of receiving media gateway, and calls out control according to operator's Indication message.
Described Media Gateway Controller comprises:
Primary rate access signaling processing module is used to handle operator's Indication message;
The call control process module is used for according to operator's Indication message control and treatment being carried out in calling.
The present invention also provides a kind of media gateway of the Q931 of employing agreement, and described media gateway comprises R2 signaling and primary rate access signaling converting unit, is used for the toll operator and inserts conversion between signal and the operator's Indication message.
The present invention also provides a kind of Media Gateway Controller of the Q931 of employing agreement, and described Media Gateway Controller comprises:
Primary rate access signaling processing module is used to handle operator's Indication message;
The call control process module is used for according to operator's Indication message control and treatment being carried out in calling.
According to the present invention, support the TOF toll operator to insert the message and the information unit of demand by expansion, solved under the NGN framework and inserted realization R2 signaling standard, thereby realized that the toll operator inserts function by the R2/PRA conversion.
Description of drawings
Fig. 1 shows the NGN network diagram of supporting the PRA signaling;
Fig. 2 shows by R2 changes the NGN network diagram that PRA realizes that R2 signaling inserts;
Fig. 3 shows toll operator of the present invention and inserts call flow diagram;
Fig. 4 shows the network diagram that realization toll operator of the present invention inserts.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
The present invention is at existing ITU-T Q.931 on the basis, support the TOF toll operator to insert the message and the information unit of demand by expansion, thereby realized under the NGN framework, inserting the R2 signaling standard that realizes, and supported the technical scheme that the toll operator inserts by the R2/PRA conversion.Q.931, ITU-T after the expansion is called Q.931+ agreement of ITU-T.
In order to realize the present invention, at first to ITU-T Q.931 agreement expand, concrete expanded definition is as follows:
One, increases operator's message OPR_MSG
This message can be issued network and be issued the called subscriber by network by calling subscriber (as the operator), is used to transmit operator's operation information, and operator's message OPR_MSG is defined as follows:
Type of message: operator's message (OPR_MSG) effective range: overall direction: two-way
Information unit Direction Type Length (byte)
Agreement is differentiated language Two-way Essential 1
Call reference Two-way Essential 2-3
Type of message Two-way Essential 1
Operator's indication information unit (ET_OPERATOR_INDICATION) Two-way Essential 1
Operator's message type of message coding is defined as follows:
Type of message Coding 8 7 6 5 4 3 2 1
Operator's message (OPR_MSG) 0x92： 1 0 0 1 0 0 1 0
In last table, agreement differentiates that the implication of information units such as language, call reference, type of message is as follows:
Agreement differentiates that language is the first of each Q931 message, and purposes is to distinguish mutually with other message for the message of user-network interface being called out control.For user-calling network control messages Q.931, its agreement differentiate language fixedly value be 0x08.
Call reference is the second portion of every Q931 message, and purposes is the request that related calling or the facility of identification message registered/cancelled on local user-network interface.
Type of message is the third part of each Q931 message, and the purposes of type of message is to discern the function of the message that is sending.OPR_MSG message as the present invention increases newly need define a new type of message sign ID for it, as value 0x92.
According to the present invention, operator's Indication message (OPR_MSG) is the message of new expansion.
Introduce the operator's indication information unit in operator's Indication message below.
The purposes of operator's indication information unit is the logic implication of operator's operation of explanation, and the exchange handling procedure carries out corresponding operator according to this indication and inserts flow processing.The coding of operator's indication information unit is as follows:
Coding Maximum length (eight bit groups)
Operator's indication information unit 8 7 6 5 4 3 2 1 0x9F： 1 0 0 1 1 1 1 1 3
Operator's indication information unit content-defined:
8 7 6 5 4 3 2 1
Operator's indication information element identifier (element ID)
1 0 0 1 1 1 1 1 The 1st eight bit group
The length of operator's indication information location contents The 2nd eight bit group
The operator operates indicated value The 3rd eight bit group
Wherein the 3rd eight bit group operator operates the concrete value implication of indicated value:
The operator operates indicated value
8 7 6 5 4 3 2 1 Implication
0 0 0 0 0 0 0 0 The operator inserts beginning (TRUNK_OFFERING_START)
0 0 0 0 0 0 0 1 The operator inserts end (TRUNK_OFFERING_END)
0 0 0 0 0 0 1 0 The operator regenerates bell (TRUNK_OFFERING_RING)
All other values all are retained
As shown in Figure 3, describe the basic call flow process that the toll operator inserts below in detail.
The R2 junction call called subscriber that step 1, operator pass through switch, if the called subscriber is conversing and is allowing and is being inserted into, then MGC passes through ALERTING message informing MGW Q.931+, and MGW is transformed to R2 signaling B3 (expression called subscriber busy) with ALERTING message by the R2/PRA transducer and sends to switch.
Described called subscriber is conversing and is allowing to be inserted into and is being meant that generally the priority conversed inserts professional priority less than the operator.For example under following situation as for following state, can not insert the called subscriber of appointment usually: (a) being inserted into the user is that the operator is not domestic consumer or has conversation state interruption-free authority; (b) be inserted into the user and in former conversation, be the callee, and caller is operator user, priority user; (c) be inserted into service attribute foreign exchange, the local call of the conversation at user place; (d) be inserted into the user and using conference telephone, Call Waiting, three party service; (e) be inserted into the user and carrying out the internet calling.
Step 2, operator learn Called Busy by switch, send the TOF signal to MGW, insert flow process with the beginning operator, the R2/PRA transducer is converted into OPR_MSG information reporting MGC Q.931+, indication information unit ET_OPERATOR_INDICATION entrained in the message indicates TRUNK_OFFERING_START, and expression beginning operator inserts.MGC receives that this message then controls called subscriber's insertion sound of eavesdropping, the beginning Three-Way Calling.This moment, the called subscriber can hear that insertion sound or operator's verbal announcement have the toll telephone incoming call.
Step 3, after the operator inserts beginning, also can according to circumstances finish the operator and insert flow process, at this moment, the operator can send out the TOF signal to MGW again by switch, this message carry the operator finish the indication.The R2/PRA transducer is converted into OPR_MSG information reporting MGC Q.931+, carries information unit ET_OPERATOR_INDICATION indication TRUNK_OFFERING_END in the message, and expression finishes the operator and inserts.MGC receives that this message then controls called subscriber's side from Three-Way Calling recovering state state before insert.
Step 4, called user terminal can select on-hook to answer trunk call, and on-hook message trigger MGC issues DISCONNECT message to MGW, and the R2/PRA transducer is converted into clear_back signaling (expression Called Onhook) and sends to switch.
Step 5, operator learn the terminal called on-hook by switch, send the RERING signal, the R2/PRA transducer is converted into OPR_MSG information reporting MGC Q.931+, carry information unit ET_OPERATOR_INDICATION indication TRUNK_OFFERING_RING in the message, bell is regenerated in expression.MGC receives that this message then controls the ring of called subscriber's side.
Step 6, called user terminal off-hook, offhook message triggers MGC and issues CONNECT message to MGW, the R2/PRA transducer is converted into answer signaling (expression called party answer) and sends to switch, thereby makes terminal called and trunk call terminal enter talking state.
More than described the basic procedure that the toll operator inserts,, had different flow process standard definitions, may not have as the TOF signal of step 2 and 3, but auto-timeout has entered next step for country variant; The country that the RERING signal of step 5 has is definition not, but regenerates bell automatically after called subscriber's on-hook.
To the Q.931 expansion of protocol message, also can adopt other message in the existing protocol to realize, as adopting NOTIFY.Particularly, adopt the Notification indicator information unit of NOTIFY, this information unit is a notice expression language, and purposes is the expression information relevant with calling.The 3rd eight bit group of this information unit only used 0～2 value at present for notice explanation Notification description.Operator's insertion can be begun to be expressed as 0x03, the operator inserts sign-off table and is shown 0x04, and the operator regenerates bell and is expressed as 0x05.
As shown in Figure 4, the invention provides the system that a kind of operator of realization inserts, described system comprises: switch, be used for sending R2 signaling (as the TOF signal) to MGW, and receive the R2 signaling message of MGW; MGW is used for the conversion between the OPR_MSG in R2 signaling TOF signal and the PRA signaling, and the OPR_MSG of conversion is issued MGC; MGC, be used to receive the OPR_MSG of MGW, and call out control according to OPR_MSG, described MGC comprises PRA signaling processing module and call control process module, described PRA signaling processing module is used to handle PRA signaling (as OPR_MSG), and described call control process module is used for according to PRA signaling (as OPR_MSG) control and treatment being carried out in calling.
According to the present invention, can solve under the NGN framework and insert the R2 signaling standard that realizes by the R2/PRA conversion, can't realize the problem that the toll operator inserts, a kind of Fast implementation of supporting country variant R2 signaling standard is provided, reduces the NGN system equipment and enter the development cost that the country variant market demand is supported corresponding R2 standard.
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.

Claims (9)

1, the method inserted of a kind of toll operator of realization is applied to the next generation network that adopts the Q931 agreement to communicate, it is characterized in that, comprising:
A, receive call when switch, and the terminal called of finding this calling is being when conversing, switch sends the toll operator to media gateway and inserts signal;
It is operator's Indication message of expanding in the Q931 agreement that B, media gateway are inserted conversion of signals with the toll operator, and issues Media Gateway Controller, and described operator's Indication message comprises agreement discriminating language and operator's indication information;
C, Media Gateway Controller are controlled the calling of terminal called according to described operator's Indication message.
2, the method for realization toll operator according to claim 1 insertion is characterized in that, described operator's Indication message comprises that the operator indicates beginning message, operator to indicate end and operator to indicate ALERTING message.
3, the method for realization toll operator according to claim 1 insertion is characterized in that described operator's Indication message is the message that increases newly.
4, the method for realization toll operator according to claim 1 insertion is characterized in that described operator's Indication message can be arranged in the existing message.
5, the method for realization toll operator according to claim 4 insertion is characterized in that described operator's Indication message can be arranged in the NOTIFY.
6, a kind of toll operator's insertion system that realizes in the next generation network that adopts the Q931 agreement is characterized in that described system comprises:
Switch is used for sending the toll operator to media gateway and inserts signal;
Media gateway is used for the conversion that the toll operator inserts signal and operator's Indication message, and operator's Indication message is issued Media Gateway Controller;
Media Gateway Controller is used for operator's Indication message of receiving media gateway, and calls out control according to operator's Indication message.
7, realization toll operator insertion system according to claim 6 is characterized in that described Media Gateway Controller comprises:
Primary rate access signaling processing module is used to handle operator's Indication message;
The call control process module is used for according to operator's Indication message control and treatment being carried out in calling.
8, a kind of media gateway that adopts the Q931 agreement is characterized in that, described media gateway comprises R2 signaling and primary rate access signaling converting unit, is used for the toll operator and inserts conversion between signal and the operator's Indication message.
9, a kind of Media Gateway Controller that adopts the Q931 agreement is characterized in that, described Media Gateway Controller comprises:
Primary rate access signaling processing module is used to handle operator's Indication message;
The call control process module is used for according to operator's Indication message control and treatment being carried out in calling.
CN200510125250.9A 2005-11-22 2005-11-22 The method and system that a kind of toll operator of realization inserts Expired - Fee Related CN100542196C (en)

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CN200510125250.9A CN100542196C (en) 2005-11-22 2005-11-22 The method and system that a kind of toll operator of realization inserts
PCT/CN2006/002165 WO2007059676A1 (en) 2005-11-22 2006-08-24 A method and a system for implementing trunk offering

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009079835A1 (en) * 2007-12-18 2009-07-02 Zte Corporation A method for realizing channel associated trunk offering line signaling in next generation network
CN101232439B (en) * 2007-01-22 2010-07-28 华为技术有限公司 Overload control method, system and apparatus
CN102316228A (en) * 2011-09-21 2012-01-11 中兴通讯股份有限公司 Method for telephone operator to realize inserting conversation in switchboard service, apparatus and system thereof
CN102387259A (en) * 2011-10-20 2012-03-21 中兴通讯股份有限公司 Method, system and device for monitoring call of intra-group subscribers by telephone operator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI106595B (en) * 1998-11-16 2001-02-28 Ericsson Telefon Ab L M Signaling in a telecommunications system
US20020150227A1 (en) * 2001-04-12 2002-10-17 Abraham Simon Viruthakulangara Operator-assisted on-line call alerting and call connection service
KR20040055495A (en) * 2002-12-21 2004-06-26 엘지전자 주식회사 Apparatus and Method for Managing R2MFC/DTMF source of private branch exchange
DE102004015157A1 (en) * 2004-03-27 2005-10-20 Siemens Ag A method for providing the functionality of an Exchange Termination unit and a Line Termination unit in a communication network

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101232439B (en) * 2007-01-22 2010-07-28 华为技术有限公司 Overload control method, system and apparatus
WO2009079835A1 (en) * 2007-12-18 2009-07-02 Zte Corporation A method for realizing channel associated trunk offering line signaling in next generation network
CN102316228A (en) * 2011-09-21 2012-01-11 中兴通讯股份有限公司 Method for telephone operator to realize inserting conversation in switchboard service, apparatus and system thereof
WO2013040832A1 (en) * 2011-09-21 2013-03-28 中兴通讯股份有限公司 Method, device and system for enabling the operator inserting calling in switchboard service
CN102387259A (en) * 2011-10-20 2012-03-21 中兴通讯股份有限公司 Method, system and device for monitoring call of intra-group subscribers by telephone operator

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