Int 2F Fn DB01  - Zyxel Zfax V2+ - Uninstall                               [F]

   AX = DB01h

Return: AX = status
       0000h successful
       0001h ZFAX is busy
       0002h another program resident above ZFAX

Note:  this function unhooks the vectors taken by the ZFAX TSR if they have
     not been hooked by other TSRs and releases the TSR's memory
   ZFAX v2.x crashes the contributor's machine when this function is
     called

See Also: AX=DA01h,AX=DB00h"ZFAX",AX=DB02h"ZFAX"