INT 14 - 3com BAPI SERIAL I/O - READ CHARACTER                                  
	AH = A3h
	DH = session ID (00h for external session managment)
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #00394)
	AL = character read or 00h if none available
SeeAlso: AH=A0h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AH=A7h"BAPI"
                                                                                

INT 14 - Interconnections Inc. TES - START A NEW SESSION                        
	AH = A3h
	ES:SI -> ???
Return: CF clear if successful
	    AX = 5445h ('TE')
	    CX <> FFFFh
	    DX = port number
	CF set on error
SeeAlso: AH=A1h"TES",AH=A4h"TES",AH=A6h"TES"