Recommendation U.43

       Replace point 4.1 by the following:

"4.1   the caller in the originating country wishing to make a new call  to  a
subscriber in the terminating country shall indicate his wish to do so by sending 
a signal consisting of  a  special  sequence  made  up  of  four  combinations
No. 12 (LLLL); usage of a fifth or more Ls is a national matter.  This combination 
should be recognized in letter shift mode only."