E2

from The Free On-line Dictionary of Computing (8 July 2008)

E2

   <communications> A European {framing specification} for the
   transmission of four multiplexed {E1} data streams, resulting
   in a transmission rate of 8.448 Mb/s (= 8448 kb/s).

   (2002-03-22)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

E2
       European digital transmission format 2 [8.448 Mbps]