INT 21 - Novell NetWare - TTS IS AVAILABLE                                      
	AX = F222h subfn 00h
	CX = length of request packet in bytes
	DX = 0000h (no reply packet)
	DS:SI -> request packet (see #02287)
	ES:DI ignored
Return: AX = status (see #02860 at INT 2F/AX=7A20h/BX=0000h)
SeeAlso: AH=F2h"Novell",AX=C702h,AX=F222h/SF=01h,AX=F222h/SF=05h


Format of NetWare "TTS Is Available" request packet:
Offset	Size	Description	(Table 02287)
 00h	BYTE	00h (subfunction "TTS Is Available")