Ericsson MINI-LINK BAS, Technical Description, Page: 101 / 174

6-17 MINI-LINK BAS
EN/LZB 111 0542 P2B Technical Description
The applications consider all equipment in the network in the same
way, regardless of their peculiarities. Specific applications, on the
other hand, handle system-specific tasks, in our case MINI-LINK
BAS specific tasks.
The general applications are:
•
Connection handler
•
Equipment handler
•
Alarm handler
6.5.2.1 Connection Handler
The connection handler is responsible for coordinating the setting up
of cross connections. It is also responsible for the re-establishment of
cross connections after failures and performing audits to ensure that
the hardware state corresponds to the internal software status.
The connection handler contains a database for all the reserved and
established cross connections. It also stores private data for each
hardware handler involved in cross connections. By letting the
connection handler store this data and perform the necessary
transaction handling, data consistency is ensured.
6.5.2.2 Equipment Handler
The equipment handler provides a common interface for the
management of basic features that are applicable to all equipment in
the network. It also provides functions to insert and delete hardware in
the system. The Equipment Handler may be seen as made up of
several blocks:
•
Configuration Manager
the startup configuration data of the system is read from
configuration files at system start. The configuration manager
provides an interface for the retrieval of this data.
Typical information items that are handled by this module are site
specific data, such as information about the circuit boards, their
hardware and software identifiers, topology and the PVC in the
system.
•
Hardware Status
the equipment handler maintains a database containing data for
all boards, sub-racks and slots in the system. The equipment
handler also keeps a database of all the units in the system and
their administrative states. The administrative states of boards
and ATM interfaces are changed as needed via the EM.