Restart and Recovery
− At link establishment the CMRU updates the RBS
database to reflect the contents of the RU database.
• Internal Configuration
− Internal configuration parameters are fetched from the
data base and used in the system
• Check RBS Operational Ability
− The CMRU evaluates the fault status of the RBS. If no
faults that affect the functionality have been detected, the
RBS is put into operation.
− The first time (after manufacture) that a CMRU is started,
it will remain in local mode until switched to remote
mode via the button, thereafter the CMRU will be taken
into remote mode
− Further information is found within the context of
Operation and Maintenance Support
21.2.3 Distributed Main RU Restart and Recovery
The sequence of actions initiated in a DMRU at restart and recovery is
summarised below:
• Select Application Software
− The application software is available even after power on
reset
− Further information is found within the context of
Function Change
• Internal Link Establishment
− The DMRU starts a continuous process which supervises
the internal link establishment and loss, between itself
and its Sub-RUs
• Wait for CMRU Link Establish
Subsequent actions in a DMRU are controlled by the superior CMRU.
These subsequent actions include:
• DMRU Software Check
− The application software within the DMRU is checked by
the CMRU against the revision of DMRU application
software stored by the CMRU
− If the two versions of application software differ, the
DMRU will download the application software from the
CMRU
− Further information is found within the context of
Function Change
• RBS Database Update
EN/LZT 123 2697 R5A
1998-08-13
141 (306)
© Ericsson Radio Systems AB
— All Rights Reserved —
To Next Page
Loading...
