hi mohsin,
are you trying to steal my identity ? :))
your initial question was “give me the document about detail of SACCH multiframe”.
i give you the document(s). it’s in 3GPP, family 45 :
http://www.3gpp.org/ftp/Specs/html-info/45-series.htm
probably 45.001, is what you’re looking for.
Now, if you have another question, please state it clearly.
Regards,
Pix