1. Mobile Phone Innovation
... Phone Systems) were predominantly based on analogue transmission. This system has now been switched off in Australia and replaced by Code Division Multiple Access (CDMA). 2nd generation systems which are digital with a European digital standard, Global Systems for Mobile Communications (GSM), was introduced into Australia in 1993 by Telstra and is used by Optus, Vodafone, Hutchinson/Orange. 3rd generation systems are also ... can cause problems as the cadmium from batteries can leak into the soil and cadmium is more toxic and longer lasting than lead. Planet Ark and the Mobile Phone Ind...
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