FI111431B - A method for intelligent network selection analysis - Google Patents

Description

I.

111431

The present invention relates to a method for intelligent network selection analysis.

5 Some of the intelligent network services are implemented in such a way that the service is started on the basis of the subscriber's initial choice or simply by lifting the handset. In these cases, the service control logic usually has to retrieve the final choice made by the subscriber. With current technology and standards-based operation, additional dialing will usually have to be dialed one at a time, since control logic cannot practically maintain (constantly changing and memory-intensive) information on routing analyzes of the entire telephone network to know how many additional numbers are required in each case. In addition, in most cases, an additional request is made, but it is no longer available, and standard operation can only respond with an error message leading to a service failure and interruption.

According to known solutions, in triggering an intelligent network that occurs before a complete number is reached (immediately after picking up the handset or dialing l ... n, where n is less than the number of digits required to provide the service), 2 0 will often have to "query" is described later.

One straightforward way to solve prior art problems would be to copy to the control logic (SCP) database a complete copy of the telephone network 25 numbering plan so that when asked for an additional number, they would be able to request just the right amount at a time. This copy of the numbering plan would eat immensely '. memory capacity, on the other hand, would require disproportionate administrative and other efforts. In practice, it is neither economically nor technically sensible to make such a fully functional solution. For this reason, services 30 now have to be provided in the traditional way described below, one by one by dialing an additional number.

111431 2

If viewed only through the level of service experienced by the subscriber, the above procedure will, in some cases, result in too many requests being made once when the numbering plan is not known, which will result in control logic and thus a call failure.

5

One of the technical problems that led to the invention is that, when starting intelligent network control logic based on a dialing that is not yet complete enough to complete further operations in the control logic, it is generally impossible for control logic to know how much additional selection is still to be expected.

10

The disadvantages of the prior art are the following:

If the analysis is constructed incorrectly, this results in a situation where the number is asked too many times. As a result, the entire call attempt will fail.

15

The message traffic between the control point / control logic (SCP) and the exchange (SSP) increases unnecessarily when one has to ask for one number at a time. Without this one-on-one additional request traffic and a copy of the numbering plan at the control point, there will be no analysis solution that can be sure not to ask for the new number 2 o after the actual "last dialed" number.

If this is to be circumvented in such a way that not all numbers are to be collected (if the service permits such operation), the intelligent network control logic does not have all the numbers selected by the subscriber at its disposal. When the service charge information is transmitted to the external hardware from the intelligent network control logic in a number of 25 cases, this charge information does not include the complete subscriber-dialed number because it could not be (completely) queried by the exchange.

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A program section containing numerical analysis has to be very complicated to construct, controlling all possible numerical directions of length, e.g. 09-6061 is a 4 digit number, but 09-6062-9 starts (can be) up to 8 digit long sequences.

3, 111431

The invention is based on the fact that in the exchange (SSP), an end character (e.g., hexadecimal value F) is always added after a dialing of a subscriber when the subscriber does not continue dialing (or does not select any) and so-called. trigger timeout. When dialing, you may then be instructed to dial • 5 significantly more numbers than you actually expect, the above procedure prevents a situation error, ie a call failure, when the requested number of numbers was not received during the dialing timeout. Typically, shorter time intervals (typically in the order of 3 ... 7 seconds) are used for dialing numbers, typically because of this shorter than normal timeout, the term special timeout is later used in the description.

More specifically, the method according to the invention is characterized in what is stated in the characterizing part of claim 1.

15

The invention provides considerable advantages. Numerical analysis in intelligent network control logic (SCP) or similar external control logic based on data collected by the exchange becomes much simpler, contains less program code, thus uses less memory and is less sensitive to human (programming) errors due to its simple structure.

The message traffic between the control logic (SCP) and the exchange (SSP) is significantly reduced in the case of an intelligent network trigger at the beginning of an incomplete dialing time (which cannot yet identify 25 call destinations) (e.g. triggers "Origination_Attempt", "Origination_Attempt_Autempt", " Collected Information "(TDP2) and" Analyzed_Information "(TDP3)).

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When all control logic can be equipped to query more and more numbers than the subscriber selects, it results in a situation where the intelligent network control logic (SCP) always has the complete subscriber's choice for eg debit specification sent to external equipment, etc.

4, 111431

The invention allows control logic to worry-freely request a sufficiently large number of additional digits, but this does not result in a failure (as it currently does) even if the full number requested is never obtained.

5 Central panel and control logic capacity savings are achieved by eliminating the need to ask for an additional number one at a time - and, on the other hand, reducing failure rates also reduces new call attempts by subscribers and thus naturally reduces the burden on exchanges.

In the following, the invention will be further explored by means of the embodiments shown in the accompanying drawings.

Figure 1 is a flowchart illustrating a prior art method for intelligent network selection analysis.

15

Figure 2 is a flowchart illustrating one method of the invention for intelligent network selection analysis.

Figure 3 is a flowchart illustrating one method of the invention for intelligent network selection analysis.

Figure 4 shows a block diagram of one method according to the invention.

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The method of the invention addresses the shortcomings of the prior art method. The invention minimizes the message load between the exchange (SSP) and the control point / control logic (SCP) and simplifies numerical analysis. This is done according to the invention as follows:

The control panel software is modified such that, when tuned, the event between the control logic (SCP) and the 3 0 control panel (SSP) "" collects additional numbers "(e.g., INAP:

The RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect Information operation) does not terminate the call attempt even if the subscriber does not select the requested number of numbers, but generates a so-called. triggering a timeout (Inter digit timer time 5 111431 out) (Figure 1: Old operation, item xiii)).

Instead of interpreting the situation as unsuccessful, the exchange places a number after the dialed number - or, if none is selected, a character 5 that cannot be selected from a normal subscriber terminal. Such characters include, for example, over-decadent characters, exemplified by the hexadecimal character F (hex-F) (Figure 2: New Function, step iv)).

Instead of asking for additional numbers one at a time (Figure 1: Old Operation, 10 (ii) - xi)), the SCP uses the "collect more numbers" command (as a rule) only once and is sure to dial a sufficient number (Figure 2 : new activity, step ii), or possibly more times, according to Example 2 (Figure 3, new activity, v), if hex-F is not yet obtained in iv)).

15 The SSP reports to the SCP (Eg, in INAP: EventReportBCSM operation) the selection made by the subscriber, either because the subscriber dialed as many digits as commanded in step 2 (current method) or because the subscriber selected 0. ..number followed by the timeout triggering, with hex-F (new mode) added after step 1 (Figure 2: new 20 mode, iv)). In the new mode, the SSP automatically sets the number wait time control to shorter, (= special time control) (typically about half) what it does for normal calls based on: 'EDP2 tuning. This is a special time control according to the invention.

25 SCP analyzes the last digit of the dialing time.

If it is hex-F -> no new numbers are worth asking for, everything is done (a conclusion from the new approach).

If it is not hex-F -> steps 2 ... .4 must be repeated until hex-F or total number capacity is obtained.

3 o Figure 1 shows a prior art solution: i) the service is triggered by triggering (Eg in INAP the InitialDP operation) (eg Trigger Detection Point 3) 6 111431 ii) requesting one more number by tuning EventDetectionPoint 2 (eg INAP: requestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect Information operation) and uses the control panel's 5 standard dial reception timer iii) dial timer starts iv) reporting the requested one new number (+ all previously received digits) (Ex: INR) EventReportBCSM operation) v) The logic software analyzes the number of numbers it receives, compares it with the data in its memory from different number directions, and decides to request a new number.

15

Ask for one more number by tuning EventDetectionPoint 2 (Ex.

INAPrssa RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] +

Collect Information operation) and uses the exchange's standard dial reception timeout 20 vi) the dial timeout starts • <vii) reporting one new number requested (+ all previously received numbers) (Ex. EventReportBCSM operation in INAP) 25 viii) The logic software analyzes the number received, compare it with the data in its memory from different number directions and decide to request a new number.

3o Ask for one more number by tuning EventDetectionPoint 2 (Ex.

In INAPr, RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect Information operation) and uses the exchange's standard dial reception timer i 7 111431 ix) call timer starts x) reporting the requested one new number (+ all 5 numbers previously received) (Ex. In INAP, EventReportBCSM Operation) xi) The logic software analyzes the number of numbers it receives, compares it with the data in its memory from different number directions, and decides to request a new number.

10

Ask for one more number by tuning EventDetectionPoint 2 (Ex. RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect Information operation in INAP) and using the center's normal pick-up timeout 15 xii) when the subscriber is no longer receiving a call , the standard call timeout of the exchange is triggered, an error occurs, 2 o the call attempt is terminated, and the service fails

The method according to the invention is illustrated in more detail in Figure 2: i) The service starts from triggering (eg InitialDP operation in INAP) (eg Trigger Detection Point 3) ii) Requires an estimated sufficient number (eg 8 pcs) of numbers by tuning EventDetectionPoint 2 (Example: INAP 30 RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect

Information). At the same time, the SSP sets the special time control selection to 111431 δ iii) the special time control is activated iv) when the subscriber dials for example five more numbers and then finishes, the special time control is triggered and the control panel declares no further dialing. numbers triggered during triggering, and append hex-F after selection (Ex. EventReportBCSM operation in INAP) v) operation continues according to service program 10

The alternative solution according to the invention of Fig. 3 is in turn described as follows: i) service starts from triggering (Eg InitialDP operation in INAP) (eg Trigger Detection Point 3) ii) requesting an estimated sufficient number (eg 4) of numbers by tuning EventDetectionPoint 2 (Example: In INAP, RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect 2 0 Information operation). At the same time, the SSP sets the Special Time Control selection to be received iii) The Special Time Control will be triggered 25 iv) Report the requested number of new digits (4) + all numbers previously received during triggering but not the Hex-F character (eg INAP EventReportBCSM operation) v ) will request a re-evaluated sufficient number (eg 4) of 3 0 more by tuning EventDetectionPoint 2 (eg INAP

RequestReportBCSMEvent [Event Detection Point 2 (EDP2)] + Collect Information Operation). SSP continues to use special time control * for dial reception 9 111431 vi) special time control starts vii) after subscriber has dialed eg two numbers and finished, after 5, special time control is triggered and the control panel declares no further dialing, the control panel reports new numbers + all previously received numbers and append a hex-F after the selection (For example, in INAP, the EventReportBCSM operation) lo viii) operation continues according to Elma

According to Figure 4, the method of the invention is for use in a telephone network comprising at least one input terminal 20 at the exchange (SSP), at least one terminal 10 connected to the input interface 20, at least one SSP connected to the terminal and at least one control logic SCP. According to the method, a selection, symbols selected by the subscriber at terminal 10, is received at the exchange input interface 20, resulting in an intelligent network trigger 11. The subscriber may optionally select one or more symbols 20 selectable by terminal 10 to be delivered to the control logic SCP. In addition, the selection received at the exchange input interface 20 is time-controlled so that if no symbols are received at the exchange input interface 20 within a predetermined time, the timeout will be triggered to cause a predetermined operation. According to the invention, a special time control is used, the delay of which differs from the normal time control 25 and, if the special time control is triggered, the control panel SSP transmits to the control logic SCP a predetermined end character which is not selectable by the conventional terminal 10.

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According to a preferred embodiment of the invention, the end character insertion is made after the last received character selected by the terminal 10 at the input terminal 20 of the exchange 30. The input interface 20 may be e.g. incoming cable, ISDN switch, radio network, terminal.

Claims (8)

10 111431 A method for intelligent network selection analysis in a telephone network comprising at least one exchange (SSP), an input interface (20) at the exchange (SSP) and at least one terminal (10) connected to the input interface (20) and at least one control logic (SCP), the method comprising: receiving, at the input terminal (20) of the exchange, a selection leading to the intelligent network trigger (11), and possibly further receiving one or more characters selectable by the terminal (10) for control logic (SCP); selections received at the input interface (20) are timed so that if no signals are received at the exchange input interface (20) within 15 predetermined times, the timeout is triggered to cause a predetermined operation, characterized in that 20. a special timeout is used different from normal timeout from a predetermined delay of the normal timeout, »<- if the timeout is triggered, the control panel (SSP) transmits to the control logic 25 (SCP) a predetermined endpoint which is not selectable by the conventional terminal (10). Method according to Claim 1, characterized in that the end character «is added after the last character selected by the terminal (10) at the input terminal (20) of the exchange. Method according to claim 1 or 2, characterized in that the end character is a super-decadent character, such as hexadecimal-D, E or F. 11 111431 Method according to claim 1 or 2, characterized in that the intelligent network trigger (11) is implemented by lifting the handset of the terminal (10). Method according to claim 1 or 2, characterized in that the intelligent network trigger (11) is implemented on the basis of the first characters of the terminal selection. Method according to claim 1 or 2, characterized in that the smart network trigger (11) is implemented by the terminal (10) by character analysis of the selected characters. Method according to claim 1, characterized in that a predetermined number of characters are requested after the intelligent network trigger (11). 15 A method according to claim 1, characterized in that the time delay of the special time control is set to half of the time delay of the normal time control. 12 111431