Wireless interface module
GSM Plus
AVS Electronics SpA
GSM Plus prevents the system from telephone line tampering
thanks to support given by GSM net.
* Continuous test on PSTN net
* Ring-back function with recognition of incoming
numbers.
* Commands given by SMS
* Protocols: Fast Format, Sia, Contact ID, Vocal (by use
of Eurosint 88 board)
* SMS sending
* Check of credit and Sim Card expiry date
