Welcome to Brainstuff from house Stuff Works dot com where smart happens. Hi Am Marshall Brain with today's question. In our office, we have a T one line. What is a T one line and how does it work? Most of us are familiar with a normal business or residential line from the cable company, but in many business settings, internet connections often come in in the form of something called a T one line. The phone company moves nearly
all voice traffic as digital rather than analog signals. Your analog line gets converted to a digital signal by sampling it at eight thousand times per second at eight bit resolution or sixty four thousand bits per second. Nearly all digital data now flows over fiber optic lines, and the phone company uses different designations to talk about the capacity
of all these different fiber optic lines. If your office has a T one line, it means that the phone company has brought a dedicated copper or fiber optic line into your office. A T one line can carry twenty four digitized voice channels, or it can carry data at a rate of one point five megabits per second. If a T one line is being used for telephone conversations, it plugs into the office's phone system. If it's carrying data, it plugs into the network's router. A T one line
tends to be extremely reliable. Depending on what they're doing. A T one line can generally handle quite a few people. For general browsing, dozens or hundreds of users are easily able to share a T one line comfortably. Here are some of the other common line designations used by the phone company. A D S zero line is a normal voice channel. It's sixty four kilobits per second, and I S D N line is two DS zero lines plus
some signaling. A T one line is one point five megabits per second, a T three line is twenty eight t ones or forty three megabits per second, and O C three line is a D four t ones or one and fifty five megabits per second, and O C twelve is four O C threes or six hundred twenty two megabits per second, and O C forty eight is four O C twelves or two and a half gigabits per second, and an O C one nine two is four O C forty eight and that's nine point six
gigabits per second. In other words, and o C one two can handle about a hundred and fifty thousands simultaneous phone calls or the data for a very large website. For more on this and thousands of other topics is It has staff works dot com