INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORT
        AH = A1h
        DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see AH=A0h"BAPI")
        AL destroyed (Novell TELAPI.EXE)
SeeAlso: AH=A0h"BAPI"

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