This Recommendation | International Standard provides the specification of management information within an Open

System related to those operations of the OSI Physical Layer specified by the specifications in this Recommendation |

International Standard. Specifics on how Physical Layer management is accomplished is beyond the scope of this

Recommendation | International Standard. Physical Layer management is defined by specifying:

? the managed object class definition of Physical Layer Managed Objects following guidelines put forth by

the Structure of Management Information (see ITU-T Recs. X.720 | ISO/IEC 10165-1 to X.723 |

ISO/IEC 10165-5;

? the relationship of the Managed Objects and attributes to both the operation of the layer and to other

objects and attributes of the layer; and

? the action type operations on the attributes of Physical Layer Managed Objects that are available to OSI

Systems Management.