o  actual sequence modulus

    Sequence number modulus in use on the link. Until negotiation is
    complete, this attribute has the value 128. However, if the value
    of the characteristic sequence modulus is 8, the modulus always
    appears as the value 8.

    8        Indicates that modulo-8 numbering is in use.
    128      Indicates that modulo-128 numbering is in use.

 o  interframe delay

                           Value: 0-109

    Time required between frames to enable the local station to
    successfully receive them.

 o  maximum pdu size

                           Value: 1-65535

    Maximum frame size (in octets) that can be used on the link.
    Until negotiation is complete, the value of this status attribute
    is the same as the characteristic preferred maximum data size.

 o  negotiated crc type

    CRC mode that has been negotiated with the remote station. This
    mode will not be used until the station is next enabled. Until
    negotiation is complete, the value of this is 16-bit.

 o  line type

                           Value: Switched or nonswitched

    Defines whether the underlying physical line is switched or
    nonswitched. This status affects the subset of port states that
    are related to a given link.

 o  physical port

    Name of the port in the Physical layer associated with the
    communications link.

 o  response address

    Address that the remote station puts in response frames.

 o  state

    State of the HDLC link. This reflects the last enable or disable
    command issued.

    off       The link is disabled.
    on        The link is enabled.

 o  window size

                           Value: 1-127

    Maximum number of I-frames that can be outstanding before
    an acknowledgment must be received. Until negotiation is
    complete, the value of this status attribute is the same as the
    characteristic preferred window size.

 o  uid

    Entity's unique identifier, which is generated when the entity is
    created.