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I am doing a project for sending bulk sms service.this is the concept

create a website . Through this website the user will enter all their details so that only registered user can use my service.I ll get a service plan from any of the service providers for sending unlimited messages.They ll give me a SIM card with a unique number like 54545.My android application interfaces with the gsm modem and sends out the messages from my machine. now,i wanted to know what kind of modem i can use for my project.Is there any modem to send only bulk sms

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1 Answers

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You might be looking for a GSM/GPRS-Terminal like these. I have used one to send SMS after a application has finished processing data or if an error occured.