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25th April 2008 at 03:01 #52125TuanndGuest
I am looking for the difference between HSL over TDM and HSL over ATM: the principles, standards and dimensiontion guide. Can anybody help me? many thanks!!19th May 2008 at 14:30 #52126MTNGuest
As I know that the HSL is over ATM, but its can be over TDM but its will be as simulation and its will be 30 % use of the 2 Mbps.
Also in TDM you can use the total bandwidth or the total E1 but fractional 30 channels .19th March 2010 at 08:46 #52127NikhilGuest
I want to know difference between TDM HSL and ATM HSL31st October 2010 at 07:18 #52128TauhidGuest
Can anybody describe a little what is the difference between ATM and TDM?8th August 2012 at 11:25 #52129galal AjlouniGuest
Would you please help me to get the formula how to calculate link load (in erlangs) for ATM-HSL (High speed link) .5th October 2016 at 08:31 #52130GURJIT SINGHGuest
Want to know ATM HSL Bandwidth5th October 2016 at 13:38 #52131Wallis DudhnathGuest
ATM and TDM are two types of data transfer technologies. TDM stands for Time-division multiplexing, which is a method of combining multiple data streams into one and sending it together over one signal. ATM stands for Asynchronous Transfer Mode. It is based on a fixed “cell” that is used to convey a Multimedia payload, i.e. Voice, Data, etc..
Summary: ATM uses “cells” whereas TDM uses a “nailed up” TimeSlot to convey information. Internally, HSL uses ATM “cells”.
Over 20 years ago when TDM was overloaded with the signalling load there was the move to 2Mbits/s HSL. This was an interim step before the full adoption of Sigtran (SS7overIP).