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Message: <blockquote data-quote="suranga84" data-source="post: 9640162" data-attributes="member: 10094">actually there are two most popular transmission methods in Telecommunication. that is SDH & PDH. in PDH method directly E1 is used. in SDH , STM tech. is used. STM1 = 63 E1.<a href="http://en.wikipedia.org/wiki/E-carrier" target="_blank">http://en.wikipedia.org/wiki/E-carrier</a> u can google it. what is the speed u was saying?<img src="/styles/default/xenforo/smilies/default/rolleyes.gif"  class="smilie" loading="lazy" alt=":rolleyes:" title="Rolleyes    :rolleyes:" data-shortname=":rolleyes:" />if u want to have 7.2 Mbps data connection at least serving site must have 5E1 for 3G. normally SL only few sites have 5E1 s. most of the operators put 2 or 3 E1s. u'll learn those things in future i guess.උඹට මොකවත් තේරුනේ නැද්ද දන්නේ නෑ. අවුලක් නෑ ඉස්සරහදි ඉගෙන ගනියි<img src="http://www.elakiri.com/forum/images/icons/sq/4.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

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