A GSM autodialler works in exactly the same way as a conventional autodialler. However, instead of being connected to a telephone line, it utilises mobile phone technology and requires a SIM card in order to function. Using a GSM autodialler means no monthly line rental fees from the telephone company, however, before deciding upon which type of autodialler you should choose, you must assess the mobile phone coverage / reception – not only in your area, but on each floor within the building (e.g. there may be no reception at all in the basement).
