FI106340B - A method for controlling calls - Google Patents

Description

, 106340

A method for controlling calls

The invention relates to a method for controlling calls according to the preamble of claim 1.

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There are many automated messaging systems in the telephone network that respond to calls (calls, etc.) to the called subscriber if the subscription does not respond to the call within a certain time-out. Typical of such respondents are e.g. the "Home Answering Machine" known from the fixed telephone network, as well as GSM voice mail, various FAX answering machines, etc.

The messaging systems cause a problem for the reachability services implemented by the intelligent network tech-15 (IN) if the interface with the "answering machine" feature (e.g. GSM phone) is somewhere other than the last link in the chain.

20 For example, if the structure of the chain is as follows: • | I «: 1. try to reach from home number if not answering • ·: *** · 2. try to reach from GSM number if not answering • · · 3. try to reach from work number if not answering • · 25 4. redirect to workplace voicemail the reach chain will never reach option 3 and the options that follow • · ♦ • · * because in option 2 the call will be answered by a GSM number answering service (for example • t · • · '30 Radiolinja EUROBOXi).

t ·> · .'j 'The accessibility service cannot detect that the answering machine was an automated device, not a desired object, and therefore it is impossible to implement the entire accessibility chain as described here.

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The problem can be resolved if the called subscriber does not transfer its callers to the answering machine each time the call comes from an intelligent network availability chain service or similar service.

5 Such a change "do not move this invitation to an answering machine, voicemail, etc." it is possible to make it to the answering service call centers, but the problem is to know when the call comes from the service, the equipment or the person in charge whose operation requires no connection to the voicemail.

There are no parametric values for the transmission of the above information in the currently used signaling (ISDN User Part (ISUP) User Part or User Phone Part (TUP) User Part).

Adding new parameter values to signaling causes significant costs. Adding a single parameter value: 20 can cost millions of FIM with direct and multiplier costs.

It is an object of the present invention to overcome the drawbacks of the above-described technology and to provide an entirely new method of controlling calls.

The invention is based on the fact that data to be transmitted in a call is used for call control such that an abnormal combination of two or more data fields of the signaling signal is used to re-parameterize the call, so that it can be redirected in the telephone network.

More particularly, the method of the invention is characterized in what is disclosed in the characterizing part of claim 1 3 106340.

The invention provides considerable advantages.

By means of the invention, the standard information used in call control can be used to produce a plurality of call control information without adding new data fields to the standard data structure. The cost rules are then considerable. Many new telecommunications services can be implemented with the old signaling information structure.

In one preferred embodiment of the invention, in the case of the availability service, the procedure of the invention can prevent the call from being routed to the destination number answering service in the middle of the availability service 15, whereby the call association (chain) of the access service operates as intended.

The invention will now be further explored by means of the exemplary embodiments of the accompanying drawings.

m 9 9 · f • ♦ · «; Fig. 1 is a flow chart illustrating a method according to the invention.

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Figure 2 is a flow chart illustrating one particular embodiment of the invention.

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Figure 3 schematically shows one call control.

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Figure 4 schematically illustrates one call control then • * ·; · '·' 30 when the call forwarding is switched on.

As shown in Figure 1, when the service is set to an active state according to block 1 and a number corresponding to the service is called according to block 2, the SCP (Service Control Point) 4 106340 marks the call according to block 3 by changing at least two signaling fields. standard, but in an illogical, non-standard mode of telephony, that is to say, spaces which are never simultaneously available in these fields. This state can typically be a state that is impossible under normal circumstances. Thus, the call is "ear tagged" for further processing and the tag is utilized at the receiving center by performing a procedure similar to the tag 10.

As shown in Figure 2, the service may be an availability service 5, whereby when the call is made to an availability service number 6, the SCP changes 2 or 3 availability service fields according to block 7. For a marked call, diverting calls to the answering machine will be disabled.

In the following, the case of Figure 2 is described more concretely. There are two fields in the ISUP signaling that carry • «: 20 numbers: Originated Called Address: (OCA) - which contains the information of the first person who transferred the call: and Redirecting Address (REDI) - which contains • f · : * "· Call the last ported interface.

The invention utilizes the standard field information of the OCA field and the A subscriber class (and, if necessary, also the illogical value setting of the call forwarding counter) to create a combination of these which is not normally found in the telephone network. From this combination, the call subject center can see • t f 30 the call coming from the IN controller and being of the control type "do not · · connect to voice mail or other answering equipment". The setting is as follows: 1. Set the OCA field to 5106340

does not normally appear on the network, for example, subscriber number 99910999 and full subscriber number 99910999 (SIZE

THE NUMBER SERIES IS THERE 0999999109999) and for subscriber A 5 as "test device".

2. Set the call forwarding counter to three (3).

ίο 3. Enter the calling subscriber number (096061) in the REDI field.

4. The called exchange may provide these two (or three) data (subscriber A = 15 "test device" and illogical "first time call forwarding number" (OCA)) (and, if desired, that the call forwarding counter value is three). , as well as the conflict between parameters (for A subscriber with test equipment class: Y: 20, the call may not be forwarded, however, • · • the call is marked as a forwarded call); that this is a call from the IN service (from the IN controller, or · · ·; ***. SCPr) and should not be connected to automatic ··· ♦ automated voice mail systems or the like.

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Figure 3 illustrates a situation in which A subscriber 10 dials the access service number «· • ♦ - 0700 9 554 4 from interface 096061 (A number) and the call is switched through home switch 15 and one or more exchanges 11 (here 3). ) intelligent network • · · 30 to SSP (Service Switching Point) 12, which in turn * * ·; · * is controlled by SCP (Service Control Point) 13. There are a number of 'numbers' defined in the Access Service * bone, which are processed in a predetermined order. . In the case shown, the call is possibly routed through the switching centers 11 (here 6 106340 in Example 3) to the first number 16 of the list (B-number 09 88 66 55), which in this case is a mobile switching center 14. Since the call is "earmarked" 5 that the call should not be diverted to an answering machine. Thus, if no response is received from the requested phone, the availability service's "reply waiting time" timeout is completed, and the availability service disconnects and forwards the ίο call availability service to the new number "earmarked", whereby other voicemail services are bypassed. Of course, bypassing the voicemail service requires a corresponding software change at each home exchange 14.

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A concrete example of the contents of the fields to be changed in the case described in the previous example (Figure 3) is shown in Table 1, where the contents of the fields of the invention immediately after SSP 12 are compared with the contents of the prior art fields.

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• · c

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• Table 1 • i 4 · • · • • • V * Par Par 25 Parameter According to the Invention

M V · __ first__ka_

Calling party's TEST OR ORDER

: Y: category__DEALER__ • J i 30 Called party num- 09 88 66 55 09 88 66 55 * ber • «11 - - 11 - I I 1 - -. ......

. ···. Calling party 09 6061 09 6061 • · * »m 'number 35 ----

Redirecting num- 09 6061 • * · «« ·, • · ber_J__ 7 106340

Redirection in- TRANSFERRED 3 KRT - (NOT TRANSFERRED) formation___ 5 Original called "IN NUMERO", number__ESIM. 0999109999__ In this case, a combination that is not present in other traffic (illogical / impossible) is a combination, ίο -

Calling party's TESTILE YOU

category__VÄLITTÄJÄ__

Original called "IN NUMERO", 15 number__ESIM. 999109999 from which the receiving exchange immediately after 14 program changes discovers that the call should not be forwarded to the voicemail service.

20 In the case of Figure 4, Item Number 09 6061 has provided a call forwarding access service to 0700 9 55 44.

The figure illustrates a situation where A ~ subscriber 17 (A number = 09 11 22 33) dials the number 09 6061. Otherwise, the situation in Fig. 4 • · I corresponds to that in Fig. 3. Contents of Data Fields SSP 12 • · a ·; After 25 is shown in the following table.

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Table 2 • Parameters of the Invention - Known Techniques

- Calling party's TEST OR ORDER

category DEALER • · - .....— —1 1 -—- '. ···. 35 Called party num- 09 88 66 55 09 88 66 55 • «• · · *. ber___

Calling party 09 112233 09 112233 • * · number___ 8 106340

Redirecting num- 09 6061 09 6061 ber_____ 5 Redirection in- TRANSFERRED 3 KRT TRANSFERRED 1 KRT.

formation___

Original called "IN NUMERO", 09 6061 number__ESIM. 999109999 _ 10

According to the invention, the "ear tag" of the call can be used e.g. for the following possible services: - Those services where the connection charge should be redirected 15 cheaper or more expensive than a normal call to the same destination number (price change as the call comes from the IN controller).

All services where the automatic answering device 20 is to be disconnected from the connection coming from the IN controller.

«·. *! - Government networks or similar

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control of access settings in exceptional circumstances, 25 allowing the call from the IN controller to be released *; always through (just as the opposite could be the case * · ·, ie, the ear-tagged call would always be blocked) when there was an emergency, overload, etc. in the network in question.

30 - Bulletin Controlling Contrary to Standards: • Incoming calls from the IN controller would never be allowed from normal exchanges ♦ due to network failures and the like *. 35 narrative spoken bulletins but

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instead, a landing message with that reason code would be sent.

9 106340

The invention naturally works in both landline and cellular networks.

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Claims (4)

A method for controlling a call in an intelligent network which utilizes parameter values of the parameter fields of signaling protocols 5, characterized in that - at least two existing ίο parameter fields (OCA, REDI) are provided with a content parameter combination which does not exist in other control cases, and - 15 local services (14) provide the desired service or part of it. A method according to claim 1, characterized in that the method is used to prevent call routing to the voicemail service. • · «· t The method according to claim 1, characterized by:. . ·. that the method is used to control the call • · · IM. ···. abnormal pricing for IN calls. • · «·« • 1 25 • · · '• y, A method according to claim 1, characterized in that the OCA and REDI ... fields and the call forwarding counter setting are used as parameter fields. • · 1 «· · IM • ♦ · • · · m 0 • *« • · »» 106340 11