CN100450123C - Method for raising call completing rate between exchange - Google Patents
Method for raising call completing rate between exchange Download PDFInfo
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- CN100450123C CN100450123C CNB2004100273880A CN200410027388A CN100450123C CN 100450123 C CN100450123 C CN 100450123C CN B2004100273880 A CNB2004100273880 A CN B2004100273880A CN 200410027388 A CN200410027388 A CN 200410027388A CN 100450123 C CN100450123 C CN 100450123C
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- call
- exchange
- reattempt
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- end office
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Abstract
The present invention relates to a method for the improvement on call completing rates among exchange offices. In an outgoing relay group, a repeated trial calling parameter is set. In an incoming relay group, a repeated trial calling number analyzer parameter is set. When an outgoing call is made, the exchange office receives a call release message from the opposite end office before a called user in the opposite end office rings, and repeated trial calls are made for all failed calls. The first repeated trial call is made according to the route of the original call. If the call is successfully made, normal succession is carried out, and the process ends; otherwise, according to the repeated trial call number analyzer parameter set in the incoming relay group, a new outgoing route is selected to repeat trial calls. If the call is successfully made, normal succession is carried out; otherwise, the call is released. By the method, according to a failure code returned by the opposite end office, repeated trial calls are made for all failed calls or some of the failed calls selectively so that call completing rates among exchange offices can be improved to a large extent. The method effectively utilizes the existing network resource.
Description
Technical field
The present invention relates to improve the method for interexchange call completing rate, be specifically related to stored-program control exchange when carrying out outbound call as gateway exchange, before the called subscriber of opposite end office ring, the processing method when receiving the call release message from opposite end office.
Background technology
Communication network is invested the network of building and controlling separately by different operators usually.But for the needs of competition, operator calls out under the normal situation in the own network internal of assurance usually, and certain control is carried out in the calling that on gateway exchange other operator is come.As the artificial setting obstacle that interconnects, show as a certain operator and often use the means of some traffic control devices, restriction relaying to place obstacles, the calling that comes for other operator limits.This has caused very big loss to other operator, therefore need take measures to improve the call completing rate of interexchange.
Present communication network is made up of different exchanges, and they are node in return, is responsible for the circuit switching in the call.When forward direction exchange is carried out outbound call, take the interoffice junction circuit after, just give backward office and handle, after backward office found the called subscriber, the notice forward office carried out interoffice and continues, called subscriber's ring then, the calling and called both sides carry out normal talking.But backward office if there is failure to take place, as can not find out relaying, looks for the overtime and people of called subscriber for calling out control etc. in looking for called subscriber's process, then to forward office transmission failed message, and returns corresponding failure code.After forward office is received the message of backward office call failure, unconditional call release, this time call failure.
As shown in Figure 1, exchange 1 links to each other with the gateway exchange of exchange 2 with operator 1, exchange 3 links to each other with the gateway exchange of exchange 4 with operator 2, and have two routes (route 1 and route 2) to link to each other between the gateway exchange of the gateway exchange of operator 1 and operator 2, guarantee two interconnection and interflows between the operator with this.Under the normal condition, the calling between two operators is all passed through from route 1, behind selection route 1 call failure, then calls out normal release.If between each exchange and the gateway exchange, and the relay resource abundance between the gateway exchange of two operators, then the call completing rate between the exchange is very high.But operator is for the needs of competition, the artificial obstacle that interconnects that is provided with, showing as operator 2 often uses the means of some traffic control devices, restriction relaying to place obstacles, calling for operator 1 limits, and the calling from the user in the exchange 4 of operator's 1 gateway exchange is limited on gateway exchange as operator 2.It is normal so at first to guarantee to pay the utmost attention under the not overabundant situation of relay resource in operator's 2 Home Networks customer call, secondly can reduce the call completing rate of operator 1, reduce their operation income, and damaged the image of operator 1 in the user, some users may will be forwarded in the network of operator 1.
Therefore the operator of forward office should judge whether call failure is because the artificial restriction of backward office causes under the very low situation of interoffice call completing rate.To the people is that the certain measure of just should taking that causes solves, to improve the call completing rate of interexchange.
Summary of the invention
The technical problem that will solve of the present invention is to provide a solution to the low situation of interexchange call completing rate that causes because of artificial restriction.At stored-program control exchange when carrying out outbound call as gateway exchange, before the called subscriber of opposite end office ring, receive call release message from opposite end office after, take measures to carry out reattempt.
Technical scheme of the present invention is:
Step 1: when original interoffice call completing rate normal, after operation a period of time, when finding that opposite end office always returns some unusual failures, need carry out reattempt and improve the interexchange call completing rate, in the out relaying group of this exchange, " reattempt " parameter is set; " reattempt number analysis " parameter is set in this exchange Incoming relaying group;
Step 2: when carrying out this exchange outbound call, this exchange is received the call release message from opposite end office before the called subscriber of opposite end office ring, and reattempt is all carried out in the calling of all failures;
Step 3: reattempt is for the first time carried out according to the route of original calling, if access success then normally continues, flow process finishes; Otherwise, change step 4 over to;
Step 4: go into " reattempt number analysis " that be provided with in the relaying according to this exchange and select new outgoing route reattempt; If access success then normally continues; Otherwise, discharge this time and call out.
" carrying out reattempt according to failure code " parameter can also be set in out relaying, when carrying out this exchange outbound call, this exchange is before the called subscriber of opposite end office ring, receive call release message from opposite end office, the failure code file that configuration is returned specifies the calling of failure code to carry out reattempt to returning.
The present invention is mainly used on the gateway exchange of different operators, (it was normal mainly to show original interoffice call completing rate when obstacle limited when finding to be interconnected outbound call by artificial setting, after operation a period of time, find that opposite end office always returns some unusual failures, cause the call completing rate of interoffice very low), can call out a part selectively according to the failure code that opposite end office returns and carry out reattempt, perhaps reattempt is all carried out in all callings of returning failure, can have been improved the call completing rate of interexchange largely.The raising of the call completing rate of interexchange can improve the operating income of operator greatly, more effectively utilizes existing Internet resources.On the other hand, the raising of network service quality also can attract more user-network access, enlarges the user resources of Operation Network.
Description of drawings
Fig. 1 is the telecommunications network schematic diagram that comprises two gateway exchanges;
Fig. 2 is the flow chart of one embodiment of the present of invention.
Embodiment
Fig. 2 is the flow chart of a kind of embodiment of the present invention.
If in a period of time, some relaying group traffic measurement results are shown that call completing rate obviously descends, if not the reason of circuit can determine that the artificial obstacle that interconnects that is provided with of opposite end office causes.Show that need carry out reattempt improves the interexchange call completing rate.
The first step: " reattempt " parameter is set in out relaying group; " reattempt number analysis " parameter is set in Incoming relaying group, " carrying out reattempt according to failure code " parameter can also be set;
Second step: when carrying out outbound call, this exchange is received the call release message from opposite end office before the called subscriber of opposite end office ring, then carries out which kind of reattempt according to the parameter decision of out relaying group;
The 3rd step:, then reattempt is all carried out in the calling of all failures if " reattempt " parameter only is set in the out relaying group; If " carrying out reattempt according to failure code " parameter also is set in the out relaying group, the failure code parameter of appointment is set simultaneously, then specify the calling of failure code to carry out reattempt to returning;
The 4th step: reattempt is for the first time carried out according to the route of original calling, if access success then normally continues, flow process finishes; Otherwise, carry out the reattempt second time;
The 5th step: reattempt is for the second time selected new outgoing route reattempt according to going into " reattempt number analysis " that be provided with in the relaying, if access success then normally continues; Otherwise, discharge this time and call out.
Above-mentioned " reattempt number analysis ", be mainly used in for the first time carry out call failure according to original route after, select new outgoing route according to going into " reattempt number analysis " that be provided with in the relaying, carry out the reattempt second time.
Opposite end office may adopt different traffic control devices, and the failure code that returns will be different, and at this moment local exchange just can carry out reattempt targetedly according to the failure code that returns.When adopting out object code to limit, then certain out object code of specifying relaying is limited by certain percentage as opposite end office.When by opposite end office's dialing restriction, opposite end office is provided with the failure code that returns as required, and the failure code that may return to the forward direction gateway exchange is SEC (switching equipment congestion) or CGC (abelian group is congested) etc.The forward direction gateway exchange is if only be provided with " reattempt " parameter at the out relaying of correspondence, then to all failed calls reattempts.If " carrying out reattempt according to failure code " parameter also is set in out relaying group, the failure code SEC of appointment is set simultaneously, then specify the calling of failure code SEC to carry out reattempt to returning, the calling of returning other failure code is discharged.
In conjunction with Fig. 1, the relaying between the CU gateway exchange in the customer call exchange 4 under the normal condition in the exchange 1 on the route 1.When the user's call completing rate in the customer call exchange 4 in operator 1 finds exchange 1 is very low, and the equipment fault that really admits a fault causes, can judge since operator 2 on its gateway exchange artificially the setting obstacle that interconnects cause.Operator 1 can be provided with the route 1 corresponding relaying group that links to each other with operator 2 and had the reattempt function on gateway exchange this moment, and the number analysis when rerouting is set selects, and cried selection another route 2 so that carry out reattempt.
During user in the customer call exchange 4 in the exchange 1, select the relaying on the gateway exchange route 1 earlier, before called subscriber's ring, after receiving the failed message that returns from operator's 2 gateway exchanges on the gateway exchange when operator 1, automatically carry out the reattempt first time according to route 1, if receive from the correct response message on operator's 2 gateway exchanges, normal call is carried out in the then success of reattempt for the first time.If do not receive from the correct response message on operator's 2 gateway exchanges, the failure of reattempt for the first time then selects route 2 to carry out the reattempt second time according to new number analysis chooser, if normal call is then carried out in the reattempt success.Otherwise, think that call failure, this moment just discharge this calling.
When determining that the obstacle that interconnects artificially is set causes the interexchange call completing rate to reduce, use the automatic repeatattempt method can improve the interexchange call completing rate well.It is to increase the number of calls with operator 1 on gateway exchange, and the route that change is called out is broken operator 2 artificial obstacle that interconnects that is provided with on gateway exchange.No matter therefore operator 2 uses the means of which traffic control device, restriction relaying to place obstacles on gateway exchange, operator 1 adopts the automatic repeatattempt method on gateway exchange, can improve the interexchange call completing rate.
Claims (2)
1, a kind of method that improves the interexchange call completing rate, step is as follows:
1.1 in the out relaying group of this exchange, " reattempt " parameter is set; " reattempt number analysis " parameter is set in this exchange Incoming relaying group;
1.2 when carrying out this exchange outbound call, this exchange is received the call release message from opposite end office before the called subscriber of opposite end office ring, and reattempt is all carried out in the calling of all failures;
1.3 reattempt is for the first time carried out according to the route of original calling, if access success then normally continues, flow process finishes; Otherwise, change step 1.4 over to;
Select new outgoing route reattempt 1.4 go into " reattempt number analysis " that be provided with in the relaying according to this exchange; If access success then normally continues; Otherwise, discharge this time and call out.
2, the method for the described raising interexchange of claim 1 call completing rate, it is characterized in that, in the out relaying of this exchange, " carrying out reattempt according to failure code " parameter is set also, when carrying out this exchange outbound call, this exchange is before the called subscriber of opposite end office ring, receive the call release message from opposite end office, the failure code file that configuration is returned specifies the calling of failure code to carry out reattempt to returning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100273880A CN100450123C (en) | 2004-05-24 | 2004-05-24 | Method for raising call completing rate between exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100273880A CN100450123C (en) | 2004-05-24 | 2004-05-24 | Method for raising call completing rate between exchange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1610362A CN1610362A (en) | 2005-04-27 |
| CN100450123C true CN100450123C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100273880A Expired - Fee Related CN100450123C (en) | 2004-05-24 | 2004-05-24 | Method for raising call completing rate between exchange |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101072254B (en) * | 2007-05-08 | 2011-05-18 | 北京佳讯飞鸿电气股份有限公司 | Method for realizing analogue loop relay glare reduction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182038A (en) * | 1994-12-21 | 1996-07-12 | Hitachi Ltd | Radio telephone set |
| JPH10108236A (en) * | 1996-09-27 | 1998-04-24 | Nec Shizuoka Ltd | Bidirectional radio calling system |
| WO2001039444A1 (en) * | 1999-11-08 | 2001-05-31 | Mci Worldcom, Inc. | Method and system for dynamic gateway selection in an ip telephony network |
| CN1331543A (en) * | 2000-06-28 | 2002-01-16 | 深圳市中兴通讯股份有限公司 | Method for increasing cell completing rate in exchanger |
| JP2004096301A (en) * | 2002-08-30 | 2004-03-25 | Hitachi Kokusai Electric Inc | Communication method |
-
2004
- 2004-05-24 CN CNB2004100273880A patent/CN100450123C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182038A (en) * | 1994-12-21 | 1996-07-12 | Hitachi Ltd | Radio telephone set |
| JPH10108236A (en) * | 1996-09-27 | 1998-04-24 | Nec Shizuoka Ltd | Bidirectional radio calling system |
| WO2001039444A1 (en) * | 1999-11-08 | 2001-05-31 | Mci Worldcom, Inc. | Method and system for dynamic gateway selection in an ip telephony network |
| CN1331543A (en) * | 2000-06-28 | 2002-01-16 | 深圳市中兴通讯股份有限公司 | Method for increasing cell completing rate in exchanger |
| JP2004096301A (en) * | 2002-08-30 | 2004-03-25 | Hitachi Kokusai Electric Inc | Communication method |
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| CN1610362A (en) | 2005-04-27 |
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Granted publication date: 20090107 Termination date: 20130524 |