INT 14 - TelAPI - "telattach" - ATTACH COM PORTIBM PC Portable (uses same BIOS as XT) TO/FROM TELNET SESSION
	AH = E8h
	BX = connection ID (see AH=E0h"TelAPI")
	CX = serial port number (0000h-0003h = COM1-COM4)
Return: AX = status
	    0000h successful
	    FFFFh failed
SeeAlso: AH=E0h,AH=E9h,AX=FF00h