The need for security systems is growing every day. These days every institution has an alarm system, and people houses are beginning to catch up. One of the features included in most security systems is the sms notification, which the author thinks is not as reliable as Ethernet Notification system because GSM networks can have a congestion at the time the alarm.
Well i disagree with the author, and i think the SMS notification is much more reliable than Ethernet, in fact from my experience Ethernet Networks tend to fail more often that GSM networks. So if you’re thinking of building a security system, i would suggest a SMS notification system instead of an ethernet one, in my opinion sms is more reliable.
Ethernet based Security System sends you an Email when the alarm goes off: [Link]