show modem connect line line-id all interchange circuits

    The modem connect line entity has a special attribute group
    "interchange circuits", which lets you show a subset of the
    status attributes.  This "interchange circuits" attribute
    group allows you to examine the instantaneous status of the
    interchange circuits on the line.

    These circuits are known by different names in the various
    interface standards. The following list shows how the status
    attribute names used in NCL correspond to those used in the
    interface standards.

    For instance, the data terminal ready attribute is the name used
    for the CCITT V.24 circuit 108/2, the EIA-232-D CD circuit, the
    RS-499 TR circuit, and so on.

    When entering commands, always use the NCL attribute name.

    When displayed, each attribute has one of the following values:

      asserted        The circuit is asserted

      not applicable  The circuit does not exist on the interface

      not asserted    The circuit is not asserted

      unknown         The modem cable is not connected or is invalid