This European Telecommunication Standard (ETS) addresses management aspects of the Flexible Multiplexer (FM) equipment. The FM management functions are specified and management network architecture is described. NOTE: The requirements of Flexible Multiplexer equipment with a variety of access methods for use in synchronous digital leased line networks are defined in part 1 of this ETS (ETS 300 461-1 [31]). Sub-64 kbit/s signals are not precluded and are considered as an option that may be described according to the methodology used in this ETS. In the same way@ special functions such as Adaptive Differential Pulse Code Modulation (ADPCM)@ conference bridges@ etc.@ which are only mentioned in an annex of part 1 (ETS 300 461-1 [31])@ are not considered. The requirements presented here are limited to the basic functions@ external characteristics and performance of the equipment. Some management functions may be implemented in a mediation device which may support both Q protocol adaptation and Operations Systems (OS) functionalities. Part 1 of this ETS (ETS 300 461-1 [31]) defines functions and indicates whether or not they are mandatory. If supported@ a function has to be managed according to this part 2 of this ETS. Part 2 of this ETS specifies when necessary the optional management characteristics (attributes@ operations and notifications) of the objects.