Product Info

1X UBS Macro B T S FRU DMI (Digital Module Internal) Assembly
System impact/considerations
If the UBS Macro BTS frame is equipped with one DMI, then performing this
replacement procedure will cause BTS downtime and suspend all call processing .
If the UBS Macro BTS frame is equipped with two DMIs, then performing this
replacement procedure for the Site Master DMI will temporarily cause BTS downtime.
This is due to soft reset of the non -Site Master DMI during the DMI swap procedure.
As soon as the DMI swap procedure is finished, the non -Site Master DMI becomes
the Site Master DMI and call processing resources are available, but temporarily
reduced until the failed DMI is replaced.
P erforming this replacement procedure for a non -Site Master DMI will not cause
BTS downtime, but call processing resources will be temporarily reduced until the
failed DMI is replaced.
Call traffic processing through the site will be temporarily interrupted by the DMI replacement
procedure.
Alarms will be generated during the DMI replacement procedure.
The DMI is not hot swappable.
DMI removal requires shutting down DC power to the DMI as well as disconnection of all
DMI cables.
Table 8 -1 DMI R eplacement Conditions
FRU
Ref Designator What to Shutdown...
Digital Module
Internal
DMI
From the OMCR, lock the DMI being removed.
Then shut down the DMI DC input power .
Required items
Documents
• 1X UBS Macro BTS Optimization/A TP manual.
68P09283A64 -3 8 -5
FOA SEP 2007