GSM

Logotip GSM-a (od 2000)
Logotip GSM-a (do 2000)

Global System for Mobile Communications ili kraće GSM je najkorišteniji standard za mobilne telefone u svijetu. GSM servis koristi preko 2 milijarde ljudi u više od 212 država i teritorija.

GSM je ćelijska mreža, što znači da se mobilni telefoni priključuju na mrežu tražeći ćelije koje se nalaze u blizini. GSM mreže rade u četiri različita frekvencijska opsega. Većina GSM operatera radi na 900 MHz ili 1800 MHz. Neke države na američkom kontinentu, uključujući SAD i Kanadu, koriste 850 MHz i 1900 MHz frekvencijski opseg.

Rijeđe korišteni su 400 i 450 MHz frekvencijski opsegi koji se koriste većinom u Skandinaviji.

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Commons ima datoteke na temu: GSM

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