Safety Tips on Doing an Oil Change

Probably one of the first safety tips to share when you're going to do an oil change on your car engine is to be ready for the oil spills, the grease, and the dirt. If you're a squeaky clean kind of person, then maybe you would rather bring your car to an auto repair shop and let them do that for you. But of course, changing ...

What Is a PRI Line, What Are the Advantages and Limitations of PRI Circuits?

In an ISDN system, there are two types of services: Basic Rate Interface (BRI) and Primary Rate Interface (PRI). While the first one is installed at home or small business organizations, the later one is for large organizations which have their own telephone exchange systems. There are number of B-channels and D-channels in ...