INT 61 - Banyan VINES - ASYNC TERMINAL EMULATION - START A SESSION
        AX = 0003h subfn 0Fh
        DS:BX -> argument block (see below)
Return: AX = status (see AX=0003h/SF=00h)
SeeAlso: AX=0003h/SF=04h,AX=0003h/SF=0Bh

Format of argument block:
Offset  Size    Description
 00h    BYTE    session ID (00h)
 01h    BYTE    0Fh (function "start a session")
 02h    WORD    pointer to information area in caller's current DS (see below)

Format of information area:
Offset  Size    Description
 00h    WORD    length of service name
 02h    WORD    pointer to service name in caller's DS
 04h    BYTE    type of connection (00h=connection name, 01h=dialout)
 05h    WORD    length of connection name/telephone number
 07h    WORD    pointer to connection name/telephone number

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