Ericsson MINI-LINK BAS, Technical Description, Page: 102 / 174

MINI-LINK BAS 6-18
Technical Description EN/LZB 111 0542 P2B
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Resource Collector
the resource collector provides an interface towards the hardware
handlers to create and manage the different transmission
interfaces in the system. It also provides inventory functions for
topology.
The resource collector keeps a database of all the transmission
interfaces in the system and their interconnection. Such a
database together with the equipment database represents the
actual configuration of the system in terms of subracks, slots,
boards, and interfaces.
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Software Upgrade
this is the process responsible for upgrading the software on
Device Processors. It reads a text file defining load modules to be
downloaded on different boards.
The software upgrade function is activated through Unix scripts
residing on the CP.
6.5.2.3 Alarm Handler
The alarm handler provides alarm and event reporting functions. It
maintains a table holding information about all events and alarms that
can be notified by the system. Alarms and events have a set of
associated properties that define the actions to be taken when they
occur, for example whether it should be logged, where it should be
sent to and so on.
The alarm handler also keeps a log of the most recent events and a
summary of all active alarms.
6.5.3 HH (Device Handlers)
HHs provide the interface between the main applications and the DP
running on the various pieces of hardware in the network, in order to
perform the actions required by the applications themselves.
HHs are also responsible for the detection and notification of failures
to the alarm handler. HHs are also called device handlers.
The main configuration activity HHs are involved in is the setup of
cross connections. These modules do not maintain information (in a
database or in any other form) about the cross connections, but let the
connection handler do this for them. This allows having just one
central point where information is stored, and inconsistencies are
avoided.
HHs also use the resource collector database, a part of the equipment
handler application, to store configuration data of the hardware they
interface to. This contributes to avoid the risk of database
inconsistencies.