INT 15h,  44h (68)       Activate/Deactivate Modem Power          Convertible
 
    Activates or deactivates the PC Convertible internal modem.
 
       On entry:      AH         44h
                      AL         Modem power state
                                 00h - Turn internal modem power off
                                 01h - Turn internal modem power on
 
       Returns:       Carry      Set if error, else cleared
                      AL         0 if successful, else non-0
 
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       Notes:         This service is available only for the PC
                      Convertible.
 
                      If the internal modem power is turned on (AL = 01h),
                      it is initialized to the current settings found in
                      the modem profile. See Service 40h for more
                      information on the modem profile.

Seealso:


 INT 15h, 40h