Int 14 Fn 0C  - Connection Manager - Test For Inbound Connection Request   [N]

   AH = 0Ch
   DX = FFFFh
   AL = connection ID from AH=0Bh/DX=FFFFh

Return: AH = return code (00h-03h) (see also AH=00h/DX=FFFFh)
       03h not prepared for inbound connection
   AL = connection ID (if AH=00h) or correct connection ID (if AH=02h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
     serial ports over an IPX or NetBIOS-based network

See Also: AH=03h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh