Till...2009 june..et was halt for 12723/24...
And it waa technical... during that period if any one wants to book ticket till et...reservation counter people used to say "et is not halt for ap exp"...
Than from july 2009 et halt change to cd...
But still every day ap take a halt at outer for 5min and if signal is not yellow than at stn...
more... also 2-5min...with ap all trains who are not halting et..are halting on outer...
Than what is the use of no halt at these types of stn...where train doesn't have clearance...