Service Manual

GSM-204-523
Redundant MCUF firmware compatibility
31st Oct 01
Maintenance Information: Horizon macro outdoor
68P02902W04-A
CONTROLLED INTRODUCTION
Maint. 3–43
Redundant MCUF firmware compatibility
Overview of
MCUF firmware
compatibility
In many installations a redundant MCUF is fitted and configured to assume
control in the event of a failure of the master MCUF. Under normal
circumstances, the redundant MCUF accepts code downloads from the master
MCUF and so remains updated and available for use.
If the redundant MCUF is replaced with a module containing firmware which is
incompatible with the master MCUF firmware, then the communicating link
between MCUFs will not be established. The redundant MCUF will therefore not
be updated and will not be available to take over when required.
Checking MCUF
firmware
compatibility
To check firmware compatibility between MCUFs, check the state of the base
transceiver processor (BTP) within each MCUF as follows:
1. Connect a PC to the TTY connection on the master MCUF.
2. At the CUST MMI prompt, enter:
state <site #> btp * *
Where <site #> is the site number.
The status of both BTPs will be displayed as follows:
BTP 0 0 0 B–U NO REASON
BTP 1 0 0 E–U NO REASON
or,
BTP 0 0 0 B–U NO REASON
BTP 1 0 0 D–U No Redundant Link
If No Redundant Link is indicated then the master MCUF is not in communication
with the redundant MCUF and firmware incompatibility may be assumed. Refer
to Updating redundant MCUF firmware.
Updating
redundant
MCUF firmware
The following procedure to update firmware in the redundant MCUF requires a
PCMCIA card containing current network configuration data. The procedure
assumes that the PCMCIA card is already in the master MCUF.
NOTE
No call processing can take place during the MCUF
firmware update process. The entire process should take
approximately one hour.