the seating arrangement for SM passenger is in the inside Lower berth. &
SM is very oncomfortable.
one more thing, few years back (i face the prob in 2008), some others trains were given SM coaches , but railway reservation database was not updated.
ur ticket will show S1 9 LB, but when u will reache the stan. u will find that S1...
more... 9 is side upper due to side middle berth.
there is a caos in the coach & TTE has to solve.