Hi;
Thanks to everyone who offered suggestions concerning my echo link problems. 
I never totally figured out what was wrong but after running the diagnostic 
it seemed that the ports were blocked or set wrong.  I called in 
reinforcements (my son) and everything was set correctly.  Just before we 
gave up, however, we essentially tried starting from scratch  and deleted 
all the old settings and put everything in per instructions.  You guessed 
it, works like a charm.  We're still not certain what was incorrect but 
sometimes I guess its safest to just go back to the beginning.
Richard