META NAME="keywords" CONTENT="Alarm modems,Alert modems,Alarm devices,Alerting devices,event report devices,event notifying,remote control modems,maitnenance modems,fault reporting devices,error reporting devices,ISDN,VdS2465 protocol,VdS protocol,VdS devices,VdS telegrams,blockade break,sabotage break,X.75,X75,X.31,X31,voice alerts,voice alerting,speech alerts,speech alerting,SMS alerting,fixed line SMS,FSMS,F-SMS,ETSI ES 201 912,ES291812,send SMS,generate SMS,generating SMS,SMS over GSM,SMS over ISDN,TAP protocol,UCP protocol">