INT 69 - DECnet DOS CTERM - STATUS
        AX = 0103h
        DX = session handle
Return: AH status flags
            bit 7 session has been aborted
            bit 6 DECnet error
            bit 1 trace data available
            bit 0 receive data available
        AL = reason code if DECnet error (see below)
SeeAlso: AX=0104h

Values for reason code:
 00h    normal disconnect
 01h    unknown message from host
 02h    protocol violation from host
 03h    could not process the initiate message
 04h    error receiving message from host
 05h    error sending message to host
 06h    error checking for message from host
 07h    remote system does not support CTERM
 08h    remote system does not support correct protocol version
 09h    did not receive BIND message from host
 0Ah    could not send BIND message to host
 0Bh    no more sessions available
 0Ch    session does not exist
 0Dh    not enough memory to complete operation
 0Eh    connection has broken
Index:  error codes;DECnet DOS CTERM|DECnet DOS CTERM;error codes

.