Handling of time zones in a telecommunication system

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Patent

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455432, 455445, 455435, 455456, H04Q 720

Patent

active

060979453

ABSTRACT:
Time zones are handled in a telecommunication system with personal mobility and time dependent routing, particularly in a telecommunication system such as UPT (Universal Personal Telecommunication) system. The system is arranged to calculate the time difference between a time zone which is obtained from a subscriber, particularly a time zone where a subscriber permanently or temporarily is located, and a time where the routing takes place, particularly where a node is located, and to calculate the subscriber's current time by adding the time difference to the current time where the routing takes place. The time-dependent routing may include at least one time table for at least one subscriber. The time table includes at least two time periods for each time period. At least one terminal of function is defined to which the subscriber incoming traffic is intended to be routed. Corrections for daylight saving rules may be included. Menues for handling failed call setups and menues for callback are provided.

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Wallinder, Soren, "Implementation of UPT-Universal Personal Telecommunication", Ericsson Review, No. 1, 1994.
Sundborg, Jonas, "Universal Personal Telecommunication (UPT)-Concept and Standardisation", Ericsson Review No. 4, 1993.

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