CN1870703A - Calling route control method - Google Patents
Calling route control method Download PDFInfo
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- CN1870703A CN1870703A CN 200510121071 CN200510121071A CN1870703A CN 1870703 A CN1870703 A CN 1870703A CN 200510121071 CN200510121071 CN 200510121071 CN 200510121071 A CN200510121071 A CN 200510121071A CN 1870703 A CN1870703 A CN 1870703A
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- soft switch
- media gateway
- route
- relaying
- calling
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Abstract
This invention provides a control method for calling route including: testing if the I/O relays of said soft switch accessed by call can pass through a same relay media gateway, if so, the soft switch controls said called route I/O relays to connect with the same relay media gateway for relaying directly, if not, the soft switch control said I/O relays to select related relay media gateway to be connected from selectable route path, which can control selecting route with low time delay to ensure the best session quality of user when the soft switch is taken as the junction center and the I/O relays of said soft switch pass through a same relay media gateway.
Description
Technical field
The present invention relates to next generation network (NGN, Next Generation Network) technology, in particular, the present invention relates in a kind of next generation network calling route control method based on soft switch.
Background technology
Along with development of Communication Technique, be that the NGN of core more and more uses in communication network with the soft switch.NGN is a kind of business-driven type network, and it adopts the network architecture comprehensive, open, that merge, separates, calls out control fully by business and calling control and separate fully with carrying, thereby realize relatively independent business system, can make business be independent of network.
With reference to figure 1, this figure is a prior art NGN network organizing schematic diagram, and as shown, NGN mainly is made up of four planes such as edge access layer, core exchange layer, network control layer, SMLs.Wherein edge access layer relates generally to AMG, SIP phone, access devices such as phone, SGW SG and TMG H.323, core exchange layer relates generally to the packet-based core networks of IP, network control layer relates generally to soft switch, and operation layer then relates to equipment such as application server, location server.
Based on the above-mentioned network architecture, NGN can provide abundant business, and multiple business or fused business such as voice, data, multimedia for example are provided.Make NGN very big application and price advantage be arranged based on IP network with respect to traditional public's switched telecommunication network PSTN netting gear, but IP network to bearer network quality requirement height, bigger network delay will make NGN phone and some other business without any meaning.
In NGN with soft switch controlling call route, with reference to figure 2, this figure is the optional route schematic diagram with soft switch controlling call route, PSTN1 user calls out PSTN2 user by soft switch 1 in the tandem mode through Trunk Media Gateway, and soft switch 1 is called out route control and can be adopted two route origin in the prior art:
(1), the first via is by PSTN1〉Trunk Media Gateway--〉route 1--〉soft switch 1--〉route 2--〉Trunk Media Gateway--PSTN2
(2), secondary route: PSTN1〉Trunk Media Gateway--〉route 1--〉soft switch 1--〉route 3--〉soft switch 2--〉Trunk Media Gateway--PSTN2
As shown, the first via is by obviously little than secondary route time delay, if selected " secondary route " will certainly influence speech quality, but can select the first via by also selecting secondary route arbitrarily at the soft switch of this kind situation when soft switch is called out route control as tandem exchange in the prior art, can not guarantee that user's communication is the best in quality.
Summary of the invention
The technical problem that the present invention solves provides a kind of calling route control method, with in soft switch during as tandem exchange, when inserting the same Trunk Media Gateway of discrepancy relaying process of described soft switch for calling, the lower route of time delay is selected in control, with assurance user's best speech quality.
For addressing the above problem, calling route control method of the present invention, described calling is tandem exchange with the soft switch, this method mainly comprises:
Can the discrepancy relaying that a, detection of call insert described soft switch pass through same Trunk Media Gateway;
B, if check result is for being, the route that described calling is controlled in soft switch come in and go out relaying all directly this same Trunk Media Gateway of connection carry out relaying;
C, if check result for not, the route that described calling is controlled in the soft switch relaying of coming in and going out is selected to connect corresponding Trunk Media Gateway from optional routed path and is carried out relaying.
Preferably, step b also can comprise:
If described Trunk Media Gateway supports hair clip to connect, then soft switch indicates this Trunk Media Gateway to adopt the hair clip connection to carry out relaying to calling out route simultaneously.
Compared with prior art, the present invention has following beneficial effect:
Among the present invention at first the detection of call discrepancy relaying that inserts described soft switch can pass through same Trunk Media Gateway; And in check result for after being, the route that described calling is controlled in the soft switch relaying of coming in and going out all directly connects this same Trunk Media Gateway and carries out relaying, owing to need not handle through other soft switch, therefore the route time delay is lower, thereby can guarantee user's best speech quality, do not pass through same Trunk Media Gateway if call out the discrepancy relaying that inserts described soft switch, soft switch then can be handled according to normal route control flow, promptly control the route discrepancy relaying of described calling and select the corresponding Trunk Media Gateway of connection to carry out relaying, do not influence existing calling route control from optional routed path.
Description of drawings
Fig. 1 is a prior art NGN networking schematic diagram;
Fig. 2 is route control is called out in soft switch as tandem exchange an optional route schematic diagram.
Embodiment
Soft switch is as call control device, it directly influences the quality of speech quality to the selection of calling out route, the process of among the present invention soft switch being called out route control as tandem exchange has been done improvement, its core is, for the calling route of calling out the same Trunk Media Gateway of discrepancy relaying process that inserts described soft switch, the route that described calling is controlled in the soft switch relaying of coming in and going out all directly connects this same Trunk Media Gateway and carries out relaying, to select the lower route of time delay, guarantee user's best speech quality.
The present invention simultaneously is if described Trunk Media Gateway supports hair clip to connect, then soft switch is also indicated this Trunk Media Gateway to adopt hair clip to connect simultaneously and is called out the relaying of route, the implication of hair clip (hair pin) speech is meant that the direction of will call out by its arrival sends the ability of going back, the call model of MGCP is to create to connect on end points, " end points " directly linked on the telephone network, can regard the time division multiplexing tdm end points as, " connection " directly links on the IP bearer network, can regard the IP end points as.Hair clip connects, and is after the calling of telephone network arrives gateway, by direct route telegram in reply phone network, does not enter the IP bearer network, and promptly two TDM termination directly are communicated with by the TDM core bus of gateway.Adopt hair clip to connect and further to improve speech quality among the present invention, describe with specific embodiment below.
With reference to figure 2, as shown, when PSTN1 user called out PSTN2 user by soft switch 1 in the tandem mode through Trunk Media Gateway, described soft switch 1 can be walked two route origin equally:
(1), the first via is by PSTN1〉Trunk Media Gateway--〉route 1--〉soft switch 1--〉route 2--〉Trunk Media Gateway--PSTN2;
(2), secondary route: PSTN1〉Trunk Media Gateway--〉route 1--〉soft switch 1--〉route 3--〉soft switch 2--〉Trunk Media Gateway--PSTN2;
Among the present invention when if soft switch 1 detection of call inserts described soft switch, if the relaying of coming in and going out all can pass through same Trunk Media Gateway; Then soft switch 1 should preferentially select the first via by, the route discrepancy relaying of controlling described calling all directly connects this same Trunk Media Gateway and carries out relaying, have only when the first via and just select secondary route during by obstructed or special circumstances, in addition, in the present invention if soft switch 1 can also indicate Trunk Media Gateway with the calling of PSTN1 user to PSTN2 user B that continue of hair clip connected mode simultaneously when Trunk Media Gateway supports that hair clip connects.
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 (3)
1, a kind of calling route control method, described calling is tandem exchange with the soft switch, it is characterized in that, this method comprises:
Can the discrepancy relaying that a, detection of call insert described soft switch pass through same Trunk Media Gateway;
B, when the discrepancy relaying that call out to insert soft switch all can be through same Trunk Media Gateway, the route that described calling is controlled in soft switch come in and go out relaying all directly this same Trunk Media Gateway of connection carry out relaying.
2, calling route control method according to claim 1, it is characterized in that, also comprise: if call out to insert the discrepancy relaying of soft switch can not be through same Trunk Media Gateway the time, the route that described calling is controlled in the soft switch relaying of coming in and going out is selected to connect corresponding Trunk Media Gateway from optional routed path and is carried out relaying.
3, calling route control method according to claim 1 and 2 is characterized in that, step b also comprises:
If described Trunk Media Gateway supports hair clip to connect, then soft switch indicates this Trunk Media Gateway to adopt the hair clip connection to carry out relaying to calling out route simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510121071 CN1870703A (en) | 2005-12-23 | 2005-12-23 | Calling route control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510121071 CN1870703A (en) | 2005-12-23 | 2005-12-23 | Calling route control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1870703A true CN1870703A (en) | 2006-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510121071 Pending CN1870703A (en) | 2005-12-23 | 2005-12-23 | Calling route control method |
Country Status (1)
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| CN (1) | CN1870703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009018744A1 (en) * | 2007-08-09 | 2009-02-12 | Huawei Technologies Co., Ltd. | Implementation method, system, media gateway and media gateway controller for route control |
| CN101247313B (en) * | 2007-02-13 | 2010-11-10 | 中兴通讯股份有限公司 | Out-trunk call establishment method |
-
2005
- 2005-12-23 CN CN 200510121071 patent/CN1870703A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247313B (en) * | 2007-02-13 | 2010-11-10 | 中兴通讯股份有限公司 | Out-trunk call establishment method |
| WO2009018744A1 (en) * | 2007-08-09 | 2009-02-12 | Huawei Technologies Co., Ltd. | Implementation method, system, media gateway and media gateway controller for route control |
| CN101365169B (en) * | 2007-08-09 | 2011-11-02 | 华为技术有限公司 | Routing control implementing method, system, media gateway and media gateway controller |
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Open date: 20061129 |