GSM is currently the technology used by Cingular in the US and is the prevalent technology in over 100 countries around the world .
GSM ( Global System for Mobile Carriers ) is one of the various cellular technologies which include TDMA , CDMA , iDEN and others .
one is currently the one used by Cingular in the US and is the prevalent technology in over 100 countries around the world .
GSM ( Global System for Mobile Carriers ) is one of the various cellular technologies which include TDMA , CDMA , iDEN and others .