GB2355624A - Call routing table for a mobile telecommunications system - Google Patents

Call routing table for a mobile telecommunications system Download PDF

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Publication number
GB2355624A
GB2355624A GB9924887A GB9924887A GB2355624A GB 2355624 A GB2355624 A GB 2355624A GB 9924887 A GB9924887 A GB 9924887A GB 9924887 A GB9924887 A GB 9924887A GB 2355624 A GB2355624 A GB 2355624A
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GB
United Kingdom
Prior art keywords
data
numbers
data representative
routing table
routing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9924887A
Other versions
GB9924887D0 (en
Inventor
Timothy John Robinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions UK Ltd
Original Assignee
Motorola Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Ltd filed Critical Motorola Ltd
Priority to GB9924887A priority Critical patent/GB2355624A/en
Publication of GB9924887D0 publication Critical patent/GB9924887D0/en
Publication of GB2355624A publication Critical patent/GB2355624A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
    • H04M15/30—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal the meter or calculation of charges not being controlled from an exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
    • H04M1/2745—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using static electronic memories, e.g. chips
    • H04M1/27485—Appending a prefix to or inserting a pause into a dialling sequence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/49—Connection to several service providers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8038—Roaming or handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8044—Least cost routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/01—Details of billing arrangements
    • H04M2215/0152—General billing plans, rate plans, e.g. charge rates, numbering plans, rate centers, customer accounts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/32—Involving wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/34—Roaming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/42—Least cost routing, i.e. provision for selecting the lowest cost tariff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/46—Connection to several service providers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/74—Rating aspects, e.g. rating parameters or tariff determination apects
    • H04M2215/7442—Roaming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/74—Rating aspects, e.g. rating parameters or tariff determination apects
    • H04M2215/745—Least cost routing, e.g. Automatic or manual, call by call or by preselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/92—Autonomous calculations of charges in terminal, i.e. meter not controlled from exchange

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention concerns the provision of call routing, preferably least cost routing, which does not require a user of a mobile to select the route and input the required codes or prefixes associated with a particular route. A routing table for calls from a mobile terminal of a telecommunications system is preferably stored in the mobile terminal. The table is provided with at least a first set of data representative of numbers to be input by a user and a second set of data representative of numbers to dialled by the terminal, the numbers of the second set each being mapped to a respective one of the first set of data. Further data sets associated with other parameters or conditions (e.g. network location) may also be stored and used to determine the dialled number. Data representative of choice or priority levels may also be stored and the routing data may be updated by the system. The number dialled may be obtained by replacing part of the input number with numbers determined from the table. Useful when routing calls via different networks (home, roam) or for call "break out", i.e. when enter into the public network via a company PABX to take advantage of cheaper rates.

Description

2355624 ROUTING OF CALLS MADE BY MOBILE TELECOMMUNICATIONS SYSTEMS
Background of the Invention
This invention relates to routing of calls made by mobile telephone communications systems. In particular, it relates to mobile telephone cellular networks and to the routing of calls made from these.
Mobile telephone networks now cover a large proportion of the globe, thus allowing communication between mobile users, or allowing calls commencing or terminating at a mobile station. Any particular call may be routed through several wireless and/or terrestrial networks and there are several alternative routes and/or networks through which any particular call can be made.
Different networks and routes may incur different costs and, in addition, a user or service provided may have beneficial agreements or arrangements with the owners or operators of networks or routes which reduce charges. Thus, by selecting the particular route by which a call to be made, the user or operator can reduce his costs and this is generally known as 'least cost routing'.
With conventional terrestrial systems, it is possible to use 'smart boxes' which serve to automatically route a call through the most cost efficient route.
2 For example, a local call may be routed via one network whereas an international call may be routed via a different network and so on.
Mobile telephone users generally subscribe to, or as associated with a service provider operating a particular proprietary network (the 'home' network). This network will cover a finite area, within the United Kingdom for example. However, once the user travels to a region outside the coverage area of the home' network, for example a state within Europe, or for some reason wishes to use a different network having overlapping coverage area, then they may be able to Iroam' by selecting an appropriate network which covers the particular area the user happens to be in and with which the home network has a roaming agreement.
In some countries, network operators offer the ability to have a leased circuit from a cellular switch into a corporate customers internal network (PABX). It is also possible to use several alternative long distance carriers, as mentioned above, for long distance traffic from mobile networks. In order to route a call via alternative carriers, the user usually has to dial an additional prefix before the number of the station he is intending to call. This may typically be a three or four digit prefix.
It is also possible for a mobile user to 'break out'. This involves dialling via a leased line and a PABX into the public network, possibly internationally, thus saving on cellular call rates and taking advantage of any corporate discounts 3 on telephone traffic. For example, an employee of a company provided with a mobile telephone may be able to dial into the company's telephone network (PABX) and from then to dial into the public network and to make, say, international calls commencing at his mobile station but routed through the PABX at his employer's offices and from then on to the public network. Thus, that call would incur calls from the mobile service provider only from the mobile to his employer and from then on his employer would be charged for the remaining part of the call, at whatever corporate discounts and agreed rates he obtains. This routing would then involve a code for linking the mobile station to the employer's PABX, an additional code enabling break out and then the actual telephone number being dialled. For example, the first code may be 7777, the second may be 9 and then for an international call this would be followed by 00 1 (for a call to the USA for example) and then the telephone number of the party to be called.
This can involve a very long string of digits and it is much more user friendly for the mobile to be programmed with a set of translations to make this route selection automatic.
The present invention arose in an attempt to provide a least cost routing method and selection procedure for mobile telecommunications.
Brief Summary of the Invention
4 According to the present invention in a first aspect there is provided a mobile terminal for a telecommunications system, including a stored routing table, the table being provided with at least a first set of data representative of numbers to be input by a user, and a second set of data representative of numbers to be dialled by the terminal, each mapped to a respective one of the first set of data.
Preferably, the routing table is provided with at least a third further set of data representative of different parameters, or conditions, whereby an item of data of the second set is chosen depending on the selected combination of relevant data from the first set and the third or a further set.
The third or additional set of data may include data representative of the network in which the mobile station may receive service, and/or priority or choice level data.
According to the present invention in a second aspect, there is provided a method of routing calls originated by a mobile station on a telecommunications system, comprising providing a stored routing table which is provided with a first set of data representative of numbers to be input by a user, and a second set of data representative of numbers to be dialled by the ten-ninal, each mapped to a respective one of the first set of data; inputting a number at the terminal; determining the relevant number to be dialled according to the routing table, and; dialling the relevant number.
Preferably, the routing table is provided with at least a third ftirther set of data representative of different parameters, or conditions, whereby an item of data of the second set is chosen depending on the selected combination of relevant data from the first set and the third or a ftirther set.
According to the present invention in a third aspect, there is provided a telecommunication system, including a mobile terminal having a stored routing table.
Preferably, the routing table is provided with at least a third ftirther set of data representative of different parameters, or conditions, whereby an item of data of the second set is chosen depending on the selected combination of relevant data from the first set and the third or a ftirther set.
According to the invention in a further aspect, there is provided a mobile terminal for a wireless telecommunications system, having a routing table usable to determine the route by which a call from the terminal is to be made.
Description of the drawings
6 A_n embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
Figure I shows a schematic diagram of an embodiment of the mobile telecommunications system; Figure 2 shows a schematic diagram of a further embodiment of a mobile telecommunications system; and Figure 3 shows an operational flow-chart of the present system.
Description of preferred embodiments of the invention
Referring to Figure 1, a remote mobile station 10 is in wireless communication with a cellular network 20. Remote from the user of the station 10 is an alternative carrier or client network 30. Auserisabletoroutea telephone call through the client network 30 by prefixing the dialled number with a 3 or 4 digit code appropriate to the identity of the network 30 (the identity will be in the forrn of a PLMN code). The code, for example pqrs, routes the call through the client PABX 40.
However, the preferred embodiment of the present system allows the user to directly dial the required number without the need of prefixes and truncation by the advantageous inclusion of routing tables stored within the memory unit 15 of the mobile station 10.
Prior to transmittal 18, the mobile station 10 compares the number dialled by the user with routing codes entered into the table appropriate for the particular 7 network 20. When part of the entered code (or in certain cases the whole of the code) matches a routing table entry the station checks for a corresponding substitution code. In the event that a corresponding substitution codes exists for the number dialled and the particular network 20 the user happens to currently be in, then the matched element of the entered number will be removed and a substitution code will be inserted as a prefix to the remaining digits to be sent. If no substitution code is present the dialled number will be transmitted as normal and no routing will take place. When routing does occur it takes place via the cellular switch 25 and the client PABX 40.
Figure 2 shows another embodiment of the system. Here the user (unknowingly) is routed through the client network 40 in the same manner as described above, but the call is further routed out into a public network via PSTN line 50. Ordinarily, the user would need to enter the four digit code pqrs as above and a further code t, to access line 50 before dialling his or her required number. The preferred system negates the need for such lengthy dialling by a user. As before, the station 10 compares the number dialled with stored tabulated codes, and where appropriate truncates and prefixes the number before transmittal 18 in order that the call should be routed via a predetermined cheaper route.
Figure 3 shows a schematic flow chart of the present system in operation. At 60 a user inputs the desired destination number into the mobile station 10. The mobile station 20 ascertains in which network it is currently located. The 8 station then compares the dialled number with entries in the stored routing table appropriate to the relevant PLMN code.
If a match is found 90, then the system will search for a substitution code at step 100. If not, the number will be transmitted as dialled at 13 0.
If a substitution code exists, the matched digits of the dialled number will be removed and the remaining digits will be prefixed with the correct substitution code. Otherwise the number is transmitted as dialled.
At step 130 the number to be sent is transmitted in the normal way.
The following table is given as a further example only of the preferred system. The table shows possible entries for a routing table for routing calls from a network with the PLMN code 234-0 1, and shows some of the logic behind the types of translation envisaged. In the table the code pqrs is assumed to be 7777.
9 Entry Translate to Choice PLMN Comments from 1 01256817474 77770 1 234-01 full number for switchboard translated.
2 01256817474 2 234-01 If first choice does not apply or route is congested, use second-choice translation.
3 01256790 77773 1 234-01 Picks up Direct Dial In (DDI) calls to a switchboard 4 0385 1 234-01 blank = no translation (cheaper direct) 0860 1 234-01 blank = no translation (cheaper direct) 6 3xxx 77773xxx 1 234-01 Treats any 4-digit number commencing 3 and sends xxx after translation.
Enables extension numbers to be entered directly.
7 00 1 NOT Only do the translation if you 234-01 are not on the network 234-01.
8 0 777790 1 234-01 Go to switchboard, get outside line and send over PSTN. This effectively routes all other calls not excluded or routed above via a switchboard Updating of the table would be either by keypad entry, pre-programming, or remote programming of the table via the GSNI/DCS/PCS 1900 Short Message Service.
As GSM/DSC/PCS 1900 is a 'roaming' system, the translations which apply will be likely to differ depending upon whether you are on the home PLMN or are roaming. This is taken into consideration by means of a 'PLMN' column, which defines which networks are included or excluded from a particular translation. The example of table 1 only includes 234-01, or 'NOT' 234-01 in column 4. In practise, many other alternative networks may be included in this column. The system looks for the correct match of number input, PLNIN number, choice level etc and then select the required value from the 'choice' column.
Using proprietary encoding of both Mobile-Originated and MobileTerminated Short Messages, the above translation table can be queried, edited and deleted remotely. Message for doing this are well known.
Service providers wishing to offer managed tariff optimisation could use the above system to maximise use of a particular Mobile-to-PA-BX link or a cost effective long distance carrier where the user of the mobile phone may not remember (or choose to use!) the cheapest route for a particular call. This feature enables that function to be incorporated automatically and maintained up to date.

Claims (17)

1. A mobile terminal (10) for a telecommunications system, including a stored routing table (15), the table being provided with at least a first set of data representative of numbers to be input by a user, and a second set of data representative of numbers to be dialled by the terminal, each mapped to a respective one of the first set of data.
2. A mobile terminal as claimed in Claim 1, wherein the routing table is provided with at least a third further set of data representative of different parameters, or conditions, whereby an item of data of the second set is chosen depending on the selected combination of relevant data from the first set and the third or a further set.
3. A mobile terminal as claimed in Claim 2, wherein the third set of data comprises location data representative of the network or networks in which the mobile station may receive service.
4. A mobile terminal as claimed in Claim 2 or Claim 3, wherein the table includes a set of data representative of choice- or priority- levels.
5. A method of routing calls originated by a mobile station on a telecommunications system, comprising providing a stored routing table (15) which is provided with a first set of data representative of numbers to be input by 12 a user, and a second set of data representative of numbers to be dialled by the terminal, each mapped to a respective one of the first set of data; inputting a number at the terminal (60); determining the relevant number to be dialled according to the routing table (110, 120), and; dialling the relevant number (13 0).
6. A method as claimed in Claim 5, wherein the routing table is provided at a mobile station (10).
7. A method as claimed in Claim 6 or Claim 7, including providing at least one further set of data in the routing table representative of different parameters or conditions (70), and dialling a number determined by the number input and the or each relevant further data item stored.
8. A method as claimed in Claim 7, wherein location data is provided representative of the networks in which a mobile terminal may receive service (70).
9. A method as claimed in any of Claims 5 to 8 (110), wherein the number dialled is obtained by removing part of the number input by the user, and adding a number or numbers (126) determined by the second or further data sets to the remaining part of the number input by the user.
13
10. A telecommunication system, including a mobile terminal (10) having a stored routing table (15), the table being provided with at least a first set of data representative of numbers to be input by a user, and a second set of data representative of numbers to be dialled by the terminal, each mapped to a respective one of the first set of data.
11. A telecommunication system as claimed in Claim 10, wherein the routing table is provided with at least a third further set of data representative of different parameters, or conditions, whereby an item of data of the second set is chosen depending on the selected combination of relevant data from the first set and the third or a further set.
12. A telecommunication system as claimed in Claim 11, wherein the third set of data comprises location data representative of the network or networks in which the mobile station may receive service.
13. A telecommunication system as claimed in Claim 11 or Claim 12, wherein the table includes a set of data representative of choice- or prioritylevels.
14. A mobile tem-iinal (10) for a wireless telecommunications system, having a routing table (15) usable to determine the route by which a call from the terminal is to be made.
14
15. A mobile terminal for a telecommunication system substantially as hereinbefore described with reference to the accompanying drawings.
16. A telecommunications system substantially as hereinbefore described, with reference to, and as illustrated by, the accompanying drawings.
17. A method of routing calls originated from a mobile station, substantially as hereinbefore described with reference to, and as illustrated by, the accompanying drawings.
GB9924887A 1999-10-20 1999-10-20 Call routing table for a mobile telecommunications system Withdrawn GB2355624A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
GB9924887A GB2355624A (en) 1999-10-20 1999-10-20 Call routing table for a mobile telecommunications system

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GB9924887D0 GB9924887D0 (en) 1999-12-22
GB2355624A true GB2355624A (en) 2001-04-25

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WO2002047371A2 (en) * 2000-12-08 2002-06-13 Merlin Gerin Sa (Pty) Limited Tariff tables
WO2003067860A1 (en) * 2002-02-08 2003-08-14 Francis Cagney Telephone number modification
WO2005018208A1 (en) * 2003-08-13 2005-02-24 Tim Italia S.P.A. Procedure for processing user's identification numbers in communication networks, corresponding communication terminal sim-card and computer product
WO2005117524A2 (en) 2004-06-02 2005-12-15 Mobilemax Inc. System for optimizing cellular telephone call placement with minimal user overhead
FR2872371A1 (en) * 2004-06-23 2005-12-30 France Telecom Address book service providing process for e.g. mobile telephone terminal subscriber, involves associating contact data to call address or number, where data includes part containing code for developing portion of call address or number
EP1687907A2 (en) * 2003-11-14 2006-08-09 Motorola, Inc. Method and apparatus for reformatting dialed numbers
WO2008125729A1 (en) * 2007-04-13 2008-10-23 Nokia Corporation Method, radio system, mobile terminal and base station for providing local breakout service
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Publication number Priority date Publication date Assignee Title
WO2002047371A3 (en) * 2000-12-08 2003-10-16 Merlin Gerin Sa Pty Ltd Tariff tables
WO2002047371A2 (en) * 2000-12-08 2002-06-13 Merlin Gerin Sa (Pty) Limited Tariff tables
WO2003067860A1 (en) * 2002-02-08 2003-08-14 Francis Cagney Telephone number modification
US9112953B2 (en) * 2002-05-16 2015-08-18 International Business Machines Corporation Internet telephony unit and software for enabling internet telephone access from traditional telephone interface
US20130058326A1 (en) * 2002-05-16 2013-03-07 International Business Machines Corporation Internet telephony unit and software for enabling internet telephone access from traditional telephone interface
WO2005018208A1 (en) * 2003-08-13 2005-02-24 Tim Italia S.P.A. Procedure for processing user's identification numbers in communication networks, corresponding communication terminal sim-card and computer product
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EP1687907A4 (en) * 2003-11-14 2009-04-29 Motorola Inc Method and apparatus for reformatting dialed numbers
EP1759463A2 (en) * 2004-06-02 2007-03-07 Mobilemax Inc. System for optimizing cellular telephone call placement with minimal user overhead
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