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WO1999039495A1 - Technique de reacheminement d'appel et systeme correspondant - Google Patents

Technique de reacheminement d'appel et systeme correspondant Download PDF

Info

Publication number
WO1999039495A1
WO1999039495A1 PCT/FI1999/000028 FI9900028W WO9939495A1 WO 1999039495 A1 WO1999039495 A1 WO 1999039495A1 FI 9900028 W FI9900028 W FI 9900028W WO 9939495 A1 WO9939495 A1 WO 9939495A1
Authority
WO
WIPO (PCT)
Prior art keywords
telephone exchange
call
exchange
move
routing information
Prior art date
Application number
PCT/FI1999/000028
Other languages
English (en)
Inventor
Eeva Hartikainen
Asko Suorsa
Original Assignee
Nokia Networks Oy
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 Nokia Networks Oy filed Critical Nokia Networks Oy
Priority to AU19709/99A priority Critical patent/AU1970999A/en
Publication of WO1999039495A1 publication Critical patent/WO1999039495A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/64—Distributing or queueing
    • H04Q3/66—Traffic distributors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/4228—Systems providing special services or facilities to subscribers in networks
    • H04M3/42297—Systems providing special services or facilities to subscribers in networks with number portability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13097—Numbering, addressing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13102—Common translator
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13109—Initializing, personal profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13272—Premature release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13282—Call forward, follow-me, call diversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13345—Intelligent networks, SCP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13353—Routing table, map memory

Definitions

  • the present invention relates to a procedure as defined in the preamble of claim 1 for rerouting a call after the called party has moved from one tele- phone exchange to another or has changed to another operator's system while the called party's subscriber number remains the same as before the change or move.
  • the present invention also relates to a system as defined in the preamble of claim 3 for rerouting a call after the called party has moved from one telephone exchange to another or has changed to another operator's system while the called party retains the same subscriber number as before the change or move.
  • the problem with the first prior-art method is that all calls addressed to a subscriber who has moved are switched through via the subscriber's old exchange, which takes time and wastes band capacity.
  • the problem is that it uses a centralised database, which may be located at a large geographic distance. In any case, it is located somewhere else than the exchange from which the call is originated. Consequently, the database queries take time.
  • This type of databases are maintained manually, so if they are implemented in every exchange to im- prove efficiency of operation, maintaining them manually will become impossible.
  • the problem is that the call switching time is increased, and not only for calls to subscribers who have moved but for all calls.
  • the object of the present invention is to disclose a new type of procedure to eliminate the drawbacks described above.
  • a specific object of the present invention is to disclose a procedure for implementing telephone number removability so that the calls are routed to the right place already in the originating exchange, thus reducing the switching time for the call.
  • a further object of the invention is to disclose a system for implementing telephone number removability.
  • the calling party's first call to the called party after the called party's subscriber line has been moved from the second telephone exchange to the third telephone exchange is routed from the first telephone exchange to the second telephone exchange, because there is no other routing information for the called number.
  • the second telephone exchange answers that the called party is not found and transmits new routing information indicating that the called party's subscriber line has been moved to the third telephone exchange.
  • the new routing information is stored in the first telephone exchange and the call is routed from the first telephone exchange to the third telephone exchange in accordance with the new routing information.
  • calls following the first call after the move are routed on the basis of the new routing information from the first telephone exchange to the third telephone exchange.
  • the first telephone exchange comprises means for analysing the called number of an outgoing call and routing the call on the basis of the analysis.
  • the call is routed to the second telephone exchange if the analysis does not reveal any new routing information. If the analy- sis does reveal new routing information, then the call is routed accordingly to the third telephone exchange.
  • the first telephone exchange comprises means for storing the new routing information received from the second telephone exchange.
  • the second telephone exchange comprises means for analysing the called number of an incoming call and transmitting new routing information regarding removal of the called subscriber line to a third telephone exchange to the first telephone exchange.
  • the present invention provides the advantage for subscribers that, except for the first call after the move, calls are routed to the right place already in the originating exchange, thus reducing the switching time.
  • the invention provides the advantage that no manual maintenance work is needed because the databases and/or analysis structures are updated automatically.
  • the amount of data to be stored will not become as large as in a database/analysis structure comprising all numbers removed.
  • Fig. 1 represents an embodiment of the procedure of the invention
  • Fig. 2 represents an embodiment of the system of the invention.
  • Fig. 1 is an example illustrating an embodiment of the procedure of the invention.
  • John Brown has moved from London to Brighton. When moving, he wanted to keep his former telephone number.
  • Joe Black of Oxford calls John Brown for the first time after John's move the call is routed to the London exchange 2.
  • the London exchange 2 answers that the number has been removed to another exchange and gives new routing information.
  • the new routing information is automatically stored on a list of removed numbers in the Oxford exchange 1 and the call is routed to the Brighton exchange 3 on the basis of the new routing information.
  • calls made by Joe Black to John Brown are routed directly to the Brighton exchange 3.
  • the new routing information is only maintained in those exchanges from which calls are made to John Brown after the move.
  • the Edinburgh exchange from where no one has called John Brown, has no information about the new call routing.
  • FIG. 2 presents an example illustrating an embodiment of the system of the invention.
  • a first telephone exchange 4 comprises means 41 by which the called number of an outgoing call is analysed and the call is routed. Moreover, the first telephone exchange 4 comprises means 42 for storing the new routing in- formation.
  • a second telephone exchange 5 comprises means 51 for analysing the called number of an incoming call and transmitting the new routing information to the first telephone exchange 4.
  • the system can be implemented using traditional switching technology, i.e. without using intelligent network techniques.
  • the called number of an outgoing call is analysed e.g. using an analysis tree 41. If the analysis does not reveal a converting number, then the call is routed in accordance with the called number. If a converting number is revealed, then the call is routed accordingly.
  • This information is returned to the first telephone exchange 4 in a signalling message defined for this purpose.
  • the analysis structure 41 is updated and the call is routed further to the third telephone exchange 6.
  • the size of the analysis structures 41 in the first telephone exchange 4 is only in- creased by those numbers to which calls have been attempted.
  • the system of the invention can also be implemented using intelligent network techniques.
  • the first 4 and the second 5 telephone exchanges are pro- vided with an intelligent network SSCP (Service Switching and Control Point) feature which comprises call switching and service control.
  • SSCP Service Switching and Control Point
  • an SSCP service 41 is executed on the called number of an outgoing call, analysing the called number. If no analysis for the number is found, then the call is continued with the number received. If an analysis is found, then a new number is obtained from a database and the call is continued with the new number.
  • a trigger has been set which starts SSCP service 51 for updating the called number, which service corresponds e.g.
  • the called number analysing service 41 is waiting for a response or the response starts service 42, which stores the called number. In both cases, the database is updated and the call is routed further to the third telephone exchange 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Cette invention, qui a trait à une technique de réacheminement d'appel lorsque une ligne d'abonné est transférée d'une circonscription à l'autre tout en conservant le même numéro, concerne également un système permettant de réacheminer un appel lorsque se produit le même cas de figure. Ce mode opératoire permet de réduire la durée de commutation et d'acheminer plus efficacement des appels à l'adresse correcte.
PCT/FI1999/000028 1998-01-20 1999-01-18 Technique de reacheminement d'appel et systeme correspondant WO1999039495A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19709/99A AU1970999A (en) 1998-01-20 1999-01-18 Procedure and system for call rerouting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980124 1998-01-20
FI980124A FI105983B (fi) 1998-01-20 1998-01-20 Menetelmä ja järjestelmä puhelun uudelleenreitittämiseksi

Publications (1)

Publication Number Publication Date
WO1999039495A1 true WO1999039495A1 (fr) 1999-08-05

Family

ID=8550474

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/000028 WO1999039495A1 (fr) 1998-01-20 1999-01-18 Technique de reacheminement d'appel et systeme correspondant

Country Status (3)

Country Link
AU (1) AU1970999A (fr)
FI (1) FI105983B (fr)
WO (1) WO1999039495A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604042A1 (fr) * 1992-12-21 1994-06-29 AT&T Corp. Détournement ou réacheminement d'appels téléphoniques après réponse
EP0710042A2 (fr) * 1994-10-26 1996-05-01 AT&T Corp. Procédé et moyen pour fournir le transport local des numéros téléphoniques
GB2305815A (en) * 1995-09-27 1997-04-16 Northern Telecom Ltd Telephone number portability
WO1997024001A1 (fr) * 1995-12-21 1997-07-03 Stentor Resource Centre Inc. Procede d'interchangeabilite de numeros faisant appel a une option de message de type isup (partie utilisateur de reseau numerique de services integres)
DE19653622A1 (de) * 1996-12-20 1998-07-02 Siemens Ag Verfahren zum Durchführen eines Verbindungsaufbaus bei Anrufumleitung bzw. Verbindungsweiterleitung in einem Kommunikationsnetz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604042A1 (fr) * 1992-12-21 1994-06-29 AT&T Corp. Détournement ou réacheminement d'appels téléphoniques après réponse
EP0710042A2 (fr) * 1994-10-26 1996-05-01 AT&T Corp. Procédé et moyen pour fournir le transport local des numéros téléphoniques
GB2305815A (en) * 1995-09-27 1997-04-16 Northern Telecom Ltd Telephone number portability
WO1997024001A1 (fr) * 1995-12-21 1997-07-03 Stentor Resource Centre Inc. Procede d'interchangeabilite de numeros faisant appel a une option de message de type isup (partie utilisateur de reseau numerique de services integres)
DE19653622A1 (de) * 1996-12-20 1998-07-02 Siemens Ag Verfahren zum Durchführen eines Verbindungsaufbaus bei Anrufumleitung bzw. Verbindungsweiterleitung in einem Kommunikationsnetz

Also Published As

Publication number Publication date
FI980124A0 (fi) 1998-01-20
FI980124L (fi) 1999-07-21
FI105983B (fi) 2000-10-31
AU1970999A (en) 1999-08-16

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