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![GSM and UMTS](https://s1.adlibris.com/images/1878411/gsm-and-umts.jpg)
GSM and UMTS
sidottu,
2001,
englanti,
ISBN 9780470843222
GSM (Global System for Mobile communication) provides a service to more than 500 million users throughout 168 countries worldwide. It is the world market leader serving 69 % of all …