Int 6B Fn 20  - Connection Manager Client.exe - ???                        [S]

   AH = 20h
   ???

Return: ???
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
     serial ports over an IPX or NetBIOS-based network

Note:  CLIENT.EXE returns CF set/AL=F9h if AH is not 00h to 21h on entry