Datacom DM991C, Руководство по эксплуатации продукта, Страница: 61 / 89

Product Manual - DM991 Series V Family - 204.4092.08 61
11. REMOTE MANAGEMENT
The DM991 modems can be remotely managed, or they can remotely manage other equipments.
Using the local terminal with the management link of the G.shdsl aggregate, the equipment can manage a
DM991S/SE or a DM991C/CE remote or it can be managed by a remote equipment (a DM991S/SE, a
DM991CE or a DM705). DM991S/SE models can also be managed through the DATACOM management
card for Telebrás sub racks, DMG20.
Through the management it is possible to configure, monitor and run test loops through the management
commands. With the management active through the DMG20 it is also possible to visualize the traps
equipment change status alerts) sent by the DM991S/SE.
User interfacing depends on how management is carried out. If it is through local terminals, options will
show up in text menus If managing via local terminal, the options will appear in text menus. Using the
DATACOM integrated management, with the DmView software application, it is possible to manage the
whole system with an interface full of graphic resources and fairly intuitive, as well as allowing
administrative chores to be done, such as resources provision, configurations backup and alarms
management.
The priority of remote management is given to the equipment that first connects to it. However, while the
equipment terminal is being used, it is not possible to remotely manage the equipment.
Management from the G.shdsl link is done by the EOC channel (Embedded Operations Channel), which
does not occupy the data band (also called out-of-band management), having a rate of 3,33kbit/s. The
exchanged packets follow the format set by the G.991.2 rule and they flow by the EOC proprietary
messages range.
To use the EOC channel remote management, the “Remote Management” option (in the DSL interface
configurations) must be in the position EOC bits.
To disable the EOC, first the “enable destructive configuration” (in General Configurations, in the terminal)
must be enabled. In doing so, the via EOC link will be lost, however the configuration that caused the link
to crash will be understood and activated by the remote equipment (in case it is valid). Finally, the remote
manager will no longer have access to the remote equipment. To re-enable the remote management the
terminal local intervention is necessary.
The configuration set by the management system can be stored in a non-volatile memory (E2PROM) for
recovery even after a power failure. The equipment will only write the configuration when the management
(local or remote) asks it to do so.
The equipment will not activate and will not store an invalid or incoherent configuration. In case the user
tries to activate an invalid configuration, the equipment will try to correct it and, if not possible, the
configuration will not be activated.
It's not possible to manage remotely the DM991S or DM991C in converter mode.