Global System for Mobile Communications, or GSM is a most popular standard of mobile phone networks. More than 80% of all the mobile devices use GSM.
GSM network provides the mobile services to a certain amount of users and consists of several sections: base station system, network and switching subsystem and operations support system (the latter deals with maintenance and technical support).
Network Monitoring with SMS alerts
SMS over GSM modem alert allows sending SMS (text message) over GSM modem or phone attached to the computer.