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March 7, 2005, 8:21 am
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I'm studying for my CCNA certificate. I have a question and I hope
someone can tell me if I understand this right.
ATM is a asynchronous transfer mode protocol. Serial interfaces like
HSSI (layer 1 DCE or DTE) use a synchronous transfer mode, becaus the
high speed must be timed. For example RS-232 this is not neccessary
because of the low tranfer speeds (19.2 Kbps). What I would like to know
is this; ATM is not using any sort of timing (it's called asynchronous),
but still is capable of those high speeds (T1 up to OC-48)? Then howcome
there is no timing needed? Or do I see this in a wrong way?
Thanks in advance,
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