The Arduino is a great choice as it can easily decode the phone’s rotary dial pulses. The Arduino code takes all of the individual dialed numbers and combines them into a phone number.

Arduino and Telefónica have made this board compatible with the other network interfaces available for Arduino. Code written for the Ethernet or Wifi Shield can be adapted for this shield by changing ...

Arduino has two new boards out which deliver connectivity - the Arduino MKR WAN 1300 (LoRa) and the Arduino MKR GSM 1400.

Be careful with those Arduino GSM cards. As [James] reports, they may turn into fire starters. One person has reported a small explosion and fire already on the Arduino forums. Now before we go ...

The GSM Shield also includes a Telefonica SIM card that includes a worldwide data tariff which can be used anywhere there is a cellular signal.

Real Time Home Security System using GSM Technology-An Anti-theft System! This project deals with the design & development of a theft control system for home, which is being used to prevent/control ...

It comes with either an Arduino board or the Cinterion EGS5 kit that is designed for developing prototypes in industrial scenarios. Developers who already have the hardware required can order the M2M ...