Method and devices for dialling services

• US 6,757,539 B2
• Filed: 11/29/2000
• Issued: 06/29/2004
• Est. Priority Date: 11/30/1999
• Status: Expired due to Term

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Kaibel, Martin, Keutmann, Heinz-Peter, Kobriger, Peter
• Primary Examiner(s): TRAN, CONGVAN
• Application Number:
  US09/725,705
• Publication Number:
  US 20010009854A1
• Time in Patent Office: 1,308 Days
• Field of Search: 455/445, 455/448, 455/433, 455/558, 379/142.07, 379/221.14, 379/265.11
• US Class Current: 455/445
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

A method and devices for dialling services in a mobile telecommunication network include a set of stored character strings used for comparison with character strings entered by a subscriber to call a service is modified, if a mobile user equipment switches from or to a visited telecommunication network.

Claims

1. A method for dialing a service in a mobile telecommunication network, comprising:

entering a desired call into a mobile user equipment;

mapping the desired call into a service identifier in the mobile user equipment;

transmitting the service identifier from the mobile user equipment to a node of the mobile telecommunication network;

mapping the service identifier into a dialing number in the node of the mobile telecommunication network;

setting up a call to a service allocated to the dialing number;

detecting that the mobile user equipment has switched to a visited telecommunication network; and

adding in the mobile user equipment a new set of character strings to be used in the visited telecommunication network for dialing services.

2. The method according to claim 1, further comprising:

detecting that the mobile user equipment has switched from the visited telecommunication network; and

deleting the set of character strings added in the mobile user equipment for the visited telecommunication network.

3. The method according to claim 1:

wherein the input of the desired call is done by entering a character string into the mobile user equipment;

wherein a comparison of the entered character string with pre-defined character strings is performed; and

if the entered character string corresponds to a pre-defined character string, the desired call is mapped into the service identifier and the service identifier allocated to said character string is determined.

4. The method according to claim 1, wherein pre-defined character strings are stored on a subscriber identification card.

5. The method according to claim 1, wherein the node of the mobile telecommunication network is a control node of a core network of the mobile telecommunication network.

6. The method according to claim 1, wherein an identification of the calling subscriber is transmitted and wherein a preferred language for the dialed service is determined by means of the identification of the calling subscriber.

7. The method according to claim 1, wherein a language indicator is additionally transmitted from the mobile user equipment to the node and a preferred language is determined for the dialed service by means of the language indicator.

8. The method according to claim 1, wherein the dialed service is an emergency call service.

9. The method according to claim 1, wherein the mobile telecommunication network comprises a Global System for Mobile Communication (GSM) network.

10. The method according to claim 1, wherein the mobile telecommunication network is a Universal Mobile Telecommunication System (UMTS) network.