Shan-e-Bhopal - तेरी खूबसूरती से नजर नही हटती, नजारे हम क्या देखें - ललितपुरी रेलफैन

Hello Every one...
I have booked few tickets in Sleeper, Jhalum Exp From Agra Cantt to Jammu for 14 Aug,
currently its showing waiting from 7 to 14,
could you please advice me, what's the provability to get the confirm seat..
and...
more...

in the pnr prediction form its showing "Date of Journey: Tue Aug 14, 2012 Class: Sleeper - SL (Total Seats available for this Class/Quota: Avbl >48)"
what is the meaning " (Total Seats available for this Class/Quota: Avbl >48)"
Please advice
Thanks
Ankur Gupta