�1���� General
�2����
General characteristics of the interfaces to OA&M equipment
�3����
Functional characteristics of the interface to OA&M equipment
�4����
Exchange OA&M interfaces
������� 4.1���� TMN interfaces
������� 4.2���� Other OA&M interfaces
������� 4.3���� ISDN access interfaces
������� 4.4���� Signalling System No. 7 network interface