CN1288884C - IP access method and system of phonetic service - Google Patents
IP access method and system of phonetic service Download PDFInfo
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- CN1288884C CN1288884C CNB031069509A CN03106950A CN1288884C CN 1288884 C CN1288884 C CN 1288884C CN B031069509 A CNB031069509 A CN B031069509A CN 03106950 A CN03106950 A CN 03106950A CN 1288884 C CN1288884 C CN 1288884C
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Abstract
The present invention discloses an IP access method of realizing phonetic services. In the method, an access side function is added on the basis of an IP telephone gateway function so that an IP telephone gateway is converted into an edge relay gateway for realizing a signaling conversion function and a medium flow conversion function. On the side of a local exchanger, the edge relay gateway and a user access gateway appear as an access network; on the side of the user access gateway, the local exchanger and the edge relay gateway appear as a medium gateway controller; the edge relay gateway is responsible for finishing the conversion between MGCP/H248 signaling and V5/No. 7 signaling. The present invention also discloses a phonetic access system.
Description
Technical field
The present invention relates to the voice-over-net service technique, particularly a kind of IP based network inserts the method and system that realize speech business with IP.
Background technology
Along with opening gradually with new competition situation of telecommunication market forms, the comprehensive competition of the communications field is growing more intense, operator's networking takes into account speed and cost, investment focus shifts to the most direct user oriented Access Layer gradually, and along with the fast development of IP network, cheapness and high-quality voice, data service are provided on IP network, more and more become possibility, and receive the concern of telecom equipment manufacturers and operator day by day.For telecom operators, utilize existing IP metropolitan area network for users such as IP supermarket, sub-district, small business, SOHO provide ip voice and multimedia service, become a kind of effective additional project in the access network construction just gradually.
There are following characteristics in existing new operator when carrying out speech business: 1, the local network construction cost is huge, with the high cost that interconnects of old operator it can't be competed on local local service, and therefore new operator mainly is conceived to toll service.2, the bandwidth of the existing IP metropolitan area network of new operator is very rich, is not utilized effectively, and therefore requires voice to insert away IP and meets its existing network and interests most.
Realize that by IP network the similar scheme of multi-service integrated access mainly contains next generation network (the being called for short NGN) scheme based on Softswitch technology at present.This scheme belongs to a kind of comprehensive, open network architecture, and business such as speech, data and multimedia are provided.NGN adopts Softswitch technology, and the functional module of conventional switch is separated into the separate network parts, and each parts is divided by corresponding function, independent development.NGN adopts professional control with calling to separate, call out control and carrying isolation technics, and realization Open Distributed network configuration makes business be independent of network.By open protocol and interface, can provide professional flexibly, apace, the personal user can oneself define service feature, and needn't be concerned about the latticed form and the terminal type of bearer service.
Though the NGN technology has tangible advantage, and be considered to the direction that the future network construction develops, its networking plan also can satisfy new operator demand.But, mainly there are 2 shortcomings with regard to As-Is:
1, adopt the NGN networking cost too high fully, operator needs a large amount of buying relevant devices, upgrades existing network to replace.
2, owing to be new technology, still among improving, there is certain risk in large-scale application to NGN at present.
In general, but new operator still needs regular hour sizable application NGN technology, this just and new operator press for and carry out integrated service and produced contradiction.
Summary of the invention
The object of the present invention is to provide a kind of IP to insert the method that realizes speech business, can on the conventional network resources basis, satisfy new operator and utilize IP network to realize inserting speech business by this method.
Another object of the present invention is to provide a kind of realization system for carrying out said process.
Method of the present invention comprises step:
A, source user make a call to the purpose user by IAD;
The Edge Trunk Gateway control function module of B, source user and purpose user side is set up the real-time transport protocol (rtp) passage respectively between the Edge Trunk Gateway of two users' side and IAD, and connects between source user and purpose user by the protocol format conversion to IAD side and local switch side;
Speech business flow point between C, source user and purpose user Tong Guo respective side real-time transmission protocol path carrying transmission.
Wherein:
Step B may further comprise the steps:
The IAD of B1, source user side reports Edge Trunk Gateway with the call event of source user;
Report local switch after the protocol format conversion of the Edge Trunk Gateway functional control module of B2, source user side with described call event;
The Edge Trunk Gateway functional control module of B3, source user side is set up the real-time transport protocol (rtp) passage between Edge Trunk Gateway and IAD;
The Edge Trunk Gateway control function module of B4, source user side reports local switch with the purpose Subscriber Number;
B5, local switch issue indication about call event according to the purpose Subscriber Number to the Edge Trunk Gateway of this user side;
Be handed down to the IAD of this user side after the Edge Trunk Gateway control function module of B6, purpose user side is changed the protocol format of described indication, and between this Edge Trunk Gateway and this IAD, set up real-time transmission protocol path (RTP) passage;
The IAD of B7, purpose user side is notified the purpose user with call event.
Adopt Media Gateway Control Protocol, H.248 agreement, H.323 agreement or Session Initiation Protocol form between described Edge Trunk Gateway and the IAD; Adopt V5 signaling, signalling system No.7, No. 1 signaling or PRA signaling protocol form between Edge Trunk Gateway and the switch.
A kind of voice service system comprises: local switch, IAD, IP network and the Edge Trunk Gateway that is arranged in the IP network; Described local switch is connected with Edge Trunk Gateway by link, mutual by the arrowband signaling protocol, described IAD links to each other by IP network with Edge Trunk Gateway, this IAD inserts the IP metropolitan area network by IP, and described Edge Trunk Gateway is used to realize the conversion of signaling conversion and Media Stream.
The present invention combines the network presence of prior art and new operator, can satisfy operator's demand preferably, makes new operator only need less input, can realize utilizing IP network comprehensively to insert multiple business.Simultaneously scheme realizes that most of what adopt is mature technique comparatively, and newly-increased part is also only finished the function of transparent transmission, conversion, so stability better.Because the gateway device that adopts in networking is consistent with equipment in the next generation network (NGN), when NGN is ripe, only need to introduce new media gateway (MGC), then existing networking just can be changed into the standard NGN networking of MGC+IAD/AMG and MGC+TMG+LE.Therefore operator can put in place in step investment, finally is smoothly transitted into NGN, meets the long-term interest and the technological development direction of operator.
The present invention also supports the scheme of all existing data, multimedia service simultaneously.
Description of drawings
Fig. 1 is a voice service system structural representation of the present invention;
Fig. 2 inserts schematic diagram for IP;
Fig. 3 is initialization register flow path figure;
Fig. 4, Fig. 5, Fig. 6 are call proceeding schematic diagram of the present invention;
Fig. 7 is a flow chart of the present invention.
Embodiment
Consult Fig. 1, voice service system is made up of equipment such as local switch, Edge Trunk Gateway, integrated access equipment, access media gateways.Wherein, local switch is responsible for realizing call business and resource is controlled; Edge Trunk Gateway is realized signaling conversion and media stream transition function; Integrated access equipment realizes being connected narrowband side telephone subscriber and broadband network with access media gateway, realizes that IP inserts.Narrowband side telephone subscriber is connected on each accessing gateway equipment by subscribers feeder, and each accessing gateway equipment and Edge Trunk Gateway are connected to the IP metropolitan area network by category-5 cable or netting twine.Edge Trunk Gateway links to each other with local switch by the E1/T1 trunk line.Local switch is by the charged words user's of Edge Trunk Gateway control accessing gateway equipment institute calling, the realization speech business.Wherein, adopt Media Gateway Control Protocol, H.248 agreement, H.323 agreement or Session Initiation Protocol communication between Edge Trunk Gateway and the accessing gateway equipment; Local switch and Edge Trunk Gateway adopt V5 signaling protocol, signalling system No.7 agreement, No. 1 signaling or session to initiate signaling protocol (SIP) and communicate by letter.
The present invention increases MGCP/H.248 network side and V5 and inserts the side function on existing IP phone gateway functional group plinth, makes the IP phone gateway change Edge Trunk Gateway (being called for short ETG) into, realizes signaling conversion and media stream transition function.
On hardware, because access media gateway/integrated access equipment, IP phone gateway, switch exist, but what access media gateway/integrated access equipment side Signalling exchange used is the MGCP/H.248 agreement, and the use of exchanger side Signalling exchange is the V5 agreement, so the realization core that IP inserts is to shut at IP telephony network, conversion by software realization MGCP/H.248 agreement and V5 agreement finish both connections, and the IP phone gateway also changes Edge Trunk Gateway (ETG) into.By behind signaling mutual, Edge Trunk Gateway is created a RTP passage that connects access media gateway/comprehensive access gate, is used to carry user speech.
Consult Fig. 2, the characteristics that IP inserts are, for the local switch side, Edge Trunk Gateway and access media gateway/integrated access equipment show as Access Network (AN), in access media gateway/integrated access equipment side, local switch (LE) and Edge Trunk Gateway show as a Media Gateway Controller (MGC).At this moment, Edge Trunk Gateway just need be finished the conversion work of corresponding agreement, on original basis of software, needs to transplant MGCP/H.248 protocol stack, two layers of V5, three layer protocols, and increases adaptive, the conversion and control function of corresponding protocols stack.
Insert for IP, comprise initialization register flow path, call proceeding flow process.
The initialization register flow path, consult Fig. 3:
After having disposed related data on the Edge Trunk Gateway, access media gateway powers on, and starts the initialization register flow path.
At first by access media gateway to the normal RSIP message of Edge Trunk Gateway transmit status, after receiving message and responding ACK, Edge Trunk Gateway sends the AUDIT message of audit to access media gateway, each an end user audits.After access media gateway is finished audit, respond normal to Edge Trunk Gateway, then Edge Trunk Gateway reports the normal ASL CHANNEL of ASL subscriber channel REPORT OK message to local switch, send the RQNT message that detects user's off hook signal to access media gateway simultaneously, Waiting for Call is initiated.Behind the initialization register flow path, the user has finished state initialization and the registration on switch and Edge Trunk Gateway, becomes the telephone subscriber that can carry out normal call.
The call proceeding process, consult Fig. 7:
Step 10: the IAD of source user side reports Edge Trunk Gateway with the call event of source user.
After caller made a call, access media gateway reported Edge Trunk Gateway with off-hook event after detecting calling subscriber's off hook signal.The call event messages form that access media gateway reports is Media Gateway Control Protocol or H248 protocol format, sees that (line of going back arrow among the figure is represented signaling to Fig. 4, and dotted line is represented the RTP passage.)。
Step 20: the Edge Trunk Gateway control function module is set up the real-time transport protocol (rtp) passage between Edge Trunk Gateway and IAD, and reports local switch after the protocol format conversion with described call event.
After Edge Trunk Gateway receives that off-hook event reports, control function module is finished the foundation and the resource allocation of RTP passage between access media gateway and the Edge Trunk Gateway, simultaneously the message format of user's off-hook event is converted to the V5 message format and reports local switch.Like this, before subscriber dialing, set up a RTP passage that is used to carry speech channel between access media gateway and the Edge Trunk Gateway.
Step 30: the Edge Trunk Gateway control function module of source user side reports local switch with station address.
After source user (or claiming caller) dialing, Edge Trunk Gateway uploads to local switch with subscriber directory number by signaling or the RTP passage set up, local switch continues according to called number, simultaneously put ring-back tone to caller, during ring-back tone process Edge Trunk Gateway, change IP bag into by pulse code modulation (pcm), pass to access media gateway, be converted to the PCM signal by access media gateway again and put to the calling subscriber and listen by the RTP passage.
Step 40: local switch issues indication about call event according to the purpose station address to the Edge Trunk Gateway of this user side.
In the present embodiment, local switch is provided the indication of ring back tone down.
Step 50: be handed down to the IAD of this user side after the Edge Trunk Gateway control function module of purpose user side is changed the protocol format of described indication, and between this Edge Trunk Gateway and this IAD, set up the real-time transport protocol (rtp) passage.
After callee side place Edge Trunk Gateway is received local switch and is put the indication of ring back tone, the V5 protocol format is converted to the MGCP/H248 protocol format, advise called subscriber place access media gateway is put and is wiped the bell sound to sop up liquid to the user, also set up simultaneously the RTP passage between a callee side Edge Trunk Gateway and the access media gateway, like this, before called subscriber's off-hook, RTP passage between callee side Edge Trunk Gateway and the access media gateway is also set up, see that (line of band arrow is represented signaling to Fig. 5 among the figure, and dotted line is represented the RTP passage.)。
Step 60: the IAD of purpose user side is notified the purpose user with call event.
The access media gateway of purpose user side is put ring back tone to the user, so far finishes call proceeding.
Step 70: flow by RTP passage carrying transmitting voice service between source user and purpose user.
After called subscriber's off-hook was replied, calling and called entered talking state.User's voice by the carrying of the RTP passage between calling and called lateral edges Tandem Gateway, access media gateway transmission, is seen Fig. 6 respectively by the media stream transition of PCM-＞IP-＞PCM-＞IP-＞PCM.
Wherein, the Edge Trunk Gateway control function module is set up the real-time transport protocol (rtp) passage and can arbitrary step be finished before step 10 and step 50 in the step 20 between Edge Trunk Gateway and IAD.
When a side was hung up, the corresponding RTP passage of this side was closed immediately, and related resource discharges.Put busy tone to not hanging up the user by local switch simultaneously.The corresponding RTP passage of this side was also closed and is discharged related resource, terminated call flow process after the user was hung up.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1, a kind of IP inserts the method that realizes speech business, it is characterized in that the method comprising the steps of:
A, source user make a call to the purpose user by IAD;
The Edge Trunk Gateway control function module of B, source user and purpose user side is set up the realtime transmission protocol RTP passage respectively between the Edge Trunk Gateway of two users' side and IAD, and connects between source user and purpose user by the protocol format conversion to IAD side and local switch side;
Speech business flow point between C, source user and purpose user Tong Guo respective side real-time transmission protocol path carrying transmission.
2, the method for claim 1 is characterized in that step B may further comprise the steps,
The IAD of B1, source user side reports Edge Trunk Gateway with the call event of source user;
Report local switch after the protocol format conversion of the Edge Trunk Gateway functional control module of B2, source user side with described call event;
The Edge Trunk Gateway functional control module of B3, source user side is set up the realtime transmission protocol RTP passage between Edge Trunk Gateway and IAD;
The Edge Trunk Gateway control function module of B4, source user side reports local switch with the purpose Subscriber Number;
B5, local switch issue indication about call event according to the purpose Subscriber Number to the Edge Trunk Gateway of this user side;
Be handed down to the IAD of this user side after the Edge Trunk Gateway control function module of B6, purpose user side is changed the protocol format of described indication, and between this Edge Trunk Gateway and this IAD, set up the realtime transmission protocol RTP passage;
The IAD of B7, purpose user side is notified the purpose user with call event;
Wherein: wherein step B3 can be placed on after the step B1, any position before the B6.
3, method as claimed in claim 1 or 2 is characterized in that:
Adopt MGCP MGCP, H.248 agreement, H.323 agreement or Session initiation Protocol SIP form between Edge Trunk Gateway and the IAD;
Adopt V5 signaling, signalling system No.7, No. 1 signaling or PRA signaling protocol form between Edge Trunk Gateway and the local switch;
4, method as claimed in claim 1 or 2 is characterized in that: described IAD comprises access media gateway AMG and integrated access equipment IAD.
5, method as claimed in claim 2 is characterized in that: among the step B4, the purpose Subscriber Number reports to local switch by signaling method, or reports to local switch with Media Stream through the realtime transmission protocol RTP passage; Wherein, when adopting signaling method, finish protocol conversion by Edge Trunk Gateway.
6, as claim 2 or 5 described methods, it is characterized in that: also comprise step among the step B4:
B41, local switch are put ring-back tone to source user;
B42, source user lateral edges Tandem Gateway control function module are converted to the IP bag with the ring-back tone of pulse code modulation PCM, and pass through the realtime transmission protocol RTP channel transfer to IAD; Perhaps, send ring-back tone by control protocol indication IAD, and
B43, IAD are handed down to source user with the ring-back tone that described IP bag is converted to pulse code modulation; Perhaps the indication according to source user lateral edges Tandem Gateway control function module is handed down to source user to ring-back tone.
7, the method for claim 1 is characterized in that: when source user and purpose user either party stopped business, the realtime transmission protocol RTP pathway closure that stops business side correspondence also discharged related resource.
8, the method for claim 1 is characterized in that: the user finishes state initialization and registration in Edge Trunk Gateway and local switch by IAD before access.
9, a kind of voice service system is characterized in that comprising: local switch, IAD, IP network and the Edge Trunk Gateway that is arranged in the IP network; Described local switch is connected with Edge Trunk Gateway by link, and is mutual by the arrowband signaling protocol; Described IAD links to each other by IP network with Edge Trunk Gateway, and this IAD inserts the IP metropolitan area network by IP, and described Edge Trunk Gateway is used to realize the conversion of signaling conversion and Media Stream.
10, system as claimed in claim 9 is characterized in that: be MGCP MGCP, H.248 agreement, H.323 agreement or Session initiation Protocol SIP link between IAD and the Edge Trunk Gateway.
11, system as claimed in claim 9 is characterized in that: described arrowband signaling protocol comprises V5 signaling, signalling system No.7, No. 1 signaling or PRA signaling protocol.
12, as the arbitrary described system of claim 9 to 11, it is characterized in that: described IAD comprises access media gateway AMG and integrated access equipment IAD.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031069509A CN1288884C (en) | 2003-03-06 | 2003-03-06 | IP access method and system of phonetic service |
| PCT/CN2004/000185 WO2004079994A1 (en) | 2003-03-06 | 2004-03-08 | Ip access system and method for performing voice service and media-stream process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031069509A CN1288884C (en) | 2003-03-06 | 2003-03-06 | IP access method and system of phonetic service |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1527550A CN1527550A (en) | 2004-09-08 |
| CN1288884C true CN1288884C (en) | 2006-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031069509A Expired - Fee Related CN1288884C (en) | 2003-03-06 | 2003-03-06 | IP access method and system of phonetic service |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004053928A1 (en) * | 2004-11-05 | 2006-05-18 | Tenovis Gmbh & Co. Kg | Method and system control for establishing an IP telephony connection |
| EP1804429B1 (en) | 2005-04-30 | 2017-07-26 | Huawei Technologies Co., Ltd. | A communication system and method for achieving ip cross-domain intercommunication via an edge media gateway |
| CN100488296C (en) * | 2005-05-13 | 2009-05-13 | 中兴通讯股份有限公司 | Method of call signalling processing and service processing separating in network system |
| CN100466641C (en) * | 2005-06-28 | 2009-03-04 | 北京寰龙技术有限公司 | System and Implementation Method of Supporting Multiple ITSPs Based on SIP |
| CN1822625B (en) * | 2005-12-07 | 2010-04-07 | 北京佳讯飞鸿电气股份有限公司 | Call extension system and call processing method |
| CN100456745C (en) * | 2006-07-17 | 2009-01-28 | 华为技术有限公司 | Global microwave access interoperability system and method for realizing real-time and roaming services |
| CN101166214B (en) * | 2006-10-19 | 2010-12-08 | 中兴通讯股份有限公司 | Method for media gateway to process session service of IP network carrier voice unit |
| CN101197755B (en) * | 2006-12-07 | 2010-08-25 | 华为技术有限公司 | Method and device for transmitting SUA signaling network management message |
| CN101707765B (en) * | 2009-09-16 | 2011-12-21 | 深圳市震有科技有限公司 | Method for transmitting calling number in V5 and media gateway control protocol converter |
| CN102131005B (en) * | 2010-12-10 | 2014-12-24 | 华为技术有限公司 | Method, device and system for implementing hotline service in internet protocol (IP) network |
| WO2013091248A1 (en) * | 2011-12-23 | 2013-06-27 | 华为技术有限公司 | Method, device and system for service implementation during failure of media gateway controller |
| CN103167195B (en) * | 2013-04-10 | 2016-01-20 | 烽火通信科技股份有限公司 | A kind of communication system supporting VOIP and the PSTN network integration |
| CN111294324A (en) * | 2018-12-10 | 2020-06-16 | 中兴通讯股份有限公司 | Call implementation method, system, device, main control board, line card and storage medium |
| CN111866294A (en) * | 2020-06-12 | 2020-10-30 | 珠海高凌信息科技股份有限公司 | Implementation method of self-exchange function and IAD equipment |
| CN117834330B (en) * | 2024-03-04 | 2024-05-14 | 四川天邑康和通信股份有限公司 | Method and device for accessing external voice equipment to PSTN (public switched telephone network) based on FTTR or PON (Passive optical network) |
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2003
- 2003-03-06 CN CNB031069509A patent/CN1288884C/en not_active Expired - Fee Related
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