Archive for June 2nd, 2019

SCADA Systems

Posted by 2 June, 2019 Comments Off on SCADA Systems

This is a computer system used to monitor and control processes related to infrastructure, industry or based in a facility. These systems usually consist of four subsystems that include the Human – Machine Interface, Remote Terminal Units, Programmable Logic Controller and Communication.

SCADA systems are usually confused with Distributed Control Systems but the difference is that processes are not controlled in real time. Changes in the networking technology have an effect on these systems with protocols based on TCP/IP and Ethernet replacing older standards.

SCADA

These systems are popular because there is more convenience when viewing processes from remote areas. The change solutions that are more standardized and open and increase in internet connections, have made SCADA systems more prone to attacks.

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Free VoIP Phone

Posted by 2 June, 2019 Comments Off on Free VoIP Phone

Voice over Internet Protocol (VoIP) is the transmission of voice over the internet. The process involves the conversion of analog voice into digital format. The signal is then deciphered into the internet protocol and  passed on to the other end. The process is reversed on the receiving end.

You can use  VoIP  with the ordinary telephone together with a voice adapter, a computer that has a microphone and speakers, or a VoIP telephone.

VoIP Phone

The VoIP phones are connected to the VoIP network instead of the regular public switch telephone network. They are connected with the use of Ethernets, Wi Fi, dial up modems and VoIP software. The VoIP software is available free from various internet sites that will enable you to make phone calls.

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