Skype Glossary: G

GMT zone: The GMT — or Greenwich Mean Time — is the system by which the majority of the world sets time according to global lines of longitude, starting with 0 being the meridian that runs between the poles through Greenwich, England and all other time zones being +/- hours in relationship to the 0 meridian.

GSM: Global System for Mobile Communications are the most widely used communications standard for mobile phones in the world.

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