INT 2F - ZyXEL ZFAX v3+ - RECORD VOICE FILE                                     
	AX = DB23h
	DS:SI -> destination filename, including path (max 128 characters)
	CX = recording channel (0 = telephone line, 1 = microphone/speaker)
	DX = voice file format
	    00h CELP, 01h two-bit ADPCM, 02h three-bit ADPCM
Return: AX = status (see #03096)
SeeAlso: AX=DB21h,AX=DB22h,AX=DB24h