Int 2F Fn DF01  U - Quarterdeck Teltsr.com - Close Connection              [Q]

   AX = DF01h

Return: nothing???

Note:  invokes the DESQview/X socket API (see INT 15/AX=DE2Eh) function 0006h
     to close the socket corresponding to the file handle set with
     AX=DF02h; NOP if no file handle was ever set

See Also: AX=DF00h"TELTSR",AX=DF02h"TELTSR"