Nokia Corporation

Ari Helaakoski

Janne J Kallio

The invention relates to a method for adjusting an oscillator ( ), a packet switched network ( ) locating between the oscillator and a specified time source ( ), which knows a clock time with a specified accuracy. In the method, a clock ( ), which is on the same side of the packet switched network ( ) as the adjustable oscillator ( ), is updated over the packet switched network ( ) on the basis of the clock time known to said time source ( ). Said clock ( ) is used in the adjustment of the oscillator ( ) for making the oscillator ( ) to oscillate at a desired frequency. The invention also relates to an apparatus and computer software for adjusting the oscillator. (FIG. )

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Pattijoki, Finland

Ari Helaakoski