| 摘要 |
Known methods and systems for providing telecommunication services to a user, like number portability, are based on Intelligent Networks, of which the installation is expensive and time-consuming. These networks can be avoided in c ase a mobile switch is coupled via a processor device to a first database correspond ing with a first network like GSM and to a second database corresponding with a seco nd network like DECT and/or INTERNET, whereby an unused area code could be used to direct a call to said mobile switch, and interrogation of said databases takes p lace via said processor device. This results in the possibility of immediate providing nu mber portability and routing into any network against low costs and without using Int elligent Networks.
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