HSL
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Revision as of 21:30, 1 September 2009 by Cboulanger (Talk | contribs)
HSL (High Speed Link) refers to an single MTP2 link which uses the whole bandwidth of a trunk to transport MTP2 data. The difference between an HSL MTP2 link and an Nx64/56kbps MTP2 link is that the Nx64/56kbps link uses many (N) independant timeslot, each containing an HDLC receiver/transmitter, grouped logically into a single MTP2 link. On the other hand, the HSL link is really a single HDLC receiver/transmitter that is not bound to a timeslot usual 7/8 bits boundary. It uses the complete trunk frame possible bandwidth to transmit data. An Nx64/56kbps link can be switched through a digital cross-connect equipment that handles the timeslot level (also referred to as 'channelized') while an HSL link cannot.
