+29Oct00=======================================================================
+1. put in echo cancelling measures into the clients. This doesn't mean you
+shouldn't take steps to prevent echoing on node links, but it may help where
+(whatever you do) it still bloody echos! This is experimental.
+2. store dxchan and mynode as callsigns (and not references) in the routing
+tables and do some checking in accessors to see if we can capture some errors.
+3. tart up the stat/chan etc display to give more useful debugging info