The Intelligent Monitoring and Control System (IMCS) is an embedded microprocessor system
capable of monitoring multiple electronic systems, depending on the number of input cards fitted.
For example in a radio station this
might include: air conditioning plant, maintained power supply, non-maintained power supply,
station audio output, computer network and transmitter output. If any of these systems
should fail, or come good after being in a fail state, IMCS will use a standard telephone
line to send an informative, confirmed delivery, Simple Message Service (SMS) text message
to the engineer's mobile phone, for example "Air Con fail @ XXX FM".
SMS messages usually work very well and have many advantages over normal calls, including
the fact that they travel on the signalling layer and can operate even in very low signal
conditions. This means that an SMS message is much more likely to successfully reach the
engineer than a voice message from an autodialler, for example. Neither would an autodialler
be able to tell whether the message had been successfully delivered to the recipient's phone,
or simply played to the answerphone.