T1/E1 and T3/E3/DS3 - CompTIA Network+ N10-005: 3.4
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- čas přidán 26. 03. 2012
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T1 and E1 technologies built some of the largest legacy WANs in the world. In this video, you'll learn about T1/E1 and the faster T3/E3 technologies. - Věda a technologie
Thank You! I'm studying this for an upcoming job interview.
what is meany by line rate?
Basically T1 is ancient tech, and the company's who provide it KNOW it, but they also KNOW that millions of people in the USA don't have access to Cable, FIOS, or DSL, and still rely on dial up modems. Those dial up people still want to watch videos and play games that demand lines that can handle more data, so they are willing to pay for something faster that they can access. The providers know this and rip those people off.
thanks for reply.
What an i missing if T1 is only 1.5 mbp/s but Ethernet gives 100 mbp/s and up why is T carriers used ? Is it used just for video streaming ?
K Robinson I know this is old but i figure other people wonder about this, originally it was because of the lack of availability of Ethernet and the cost of ethernet, very similar to what we are currently dealing with Ethernet vs fiber. Now its just at that point that its already there and corporations just need to upgrade
+K BX NYC MANY people in the USA do not have access to Fios, Cable or DSL, dial up and phone line is the answer.
Michael Thomas well we would have had a nationwide fiber optic network to gradually replace our aging copper infrastructure, but we have the majority of dinosaur senators in congress to thank for striking the idea down.
I know this is old but, believe it or not many government agencies still use T1 for systems designed, built and are still in use since 1988 (doppler weather radar anyone?); Further, now I work for a different agency which still uses T3/DS3. So, with that in mind, however obsolete a tech is, always good to know.
Ethernet has distance limitations which is why you would use Ethernet at home, but your ISP connection is DSL, fiber, or cable / satellite. T1 is a simpler physical layer that is used over regular telephone wiring like DSL does, but still use Ethernet to the T1 modem.