Ericsson LBI-39076B - Manual (Page 48)

LBI-39076B MAINTENANCE
48
9. System Manager (Enable all but 2nd Group):
•
Using System Manager screen 10, panel 1:4,
reconfigure the “Interconnect” field to “Y” for the
radio channels connected to the Master GTI unit
and each GTI unit in the first group.
•
Using System Manager screen 14, reconfigure the
“Line Active” field to “Y” for the line numbers
connected to the Master GTI unit and each GTI
unit in the first group.
10. Each GTI in 2nd Group (Modify 2nd Group):
Complete the regular GTI units in the order you get to
them, as you follow the PCM Data Bus.
•
(MASTR II & IIe applications only) - Add a
jumper between pins 2 and 3 of the Power/Audio
plug on the back panel of the GTI (see Figure 45).
•
Disconnect the Power/Audio plug (you will need a
pair of pliers to pull the plug out of the recessed
connector) and Phone plug from the back panel of
the GTI unit.
•
Remove the GTI unit from the cabinet, and remove
the top cover.
•
If the Main Board is Revision A, replace with a
Revision D or E Main Board.
•
Replace the GTI DSP software on the Main Board
with V2.03 GTI DSP software.
•
Replace the GTI 552 software on the Main Board
with V2.3 GTI 552 software.
•
Replace the GTI Main software on the Processor
Board with V2.14 GTI Main software.
•
Re-attach the top cover, and re-install in cabinet
(don’t forget to fasten rear supports).
•
Re-connect the Power/Audio plug and Phone plug
to the back panel of the GTI unit.
•
Re-connect the PCM Data Bus plugs to the back
panel of the GTI unit (you must temporarily
disconnect the segments of the bus, but all GTI
units affected should not be in service yet).
If the ELI system experiences problems due to the
temporary disconnections, you will have to disable
the ELI system through the System Manager for
each temporary disconnection.
•
(MASTR II & IIe applications only) - Remove the
jumper between pins 2 and 3 of the Power/Audio
plug on the back panel of the GTI (see Figure 45).
•
Go on to next step if you want to put GTI units
back into service one at a time, or repeat this step
until several or all GTI units have been completed
before going on to the next step.
11. System Manager (Enable Each Completed GTI):
•
Using System Manager screen 10, panel 1:4,
reconfigure the “Interconnect” field to “Y” for each
radio channel connected to each newly completed
GTI unit.
•
Using System Manager screen 14, reconfigure the
“Line Active” field to “Y” for each line number
connected to each newly completed GTI unit.
•
Keep returning to the previous step until all GTI
units have been completed and brought back into
service.
Plan C - One at a Time
Plan C is to take the ELI system completely out of
service while changes are made to the Master GTI unit, and
then run the ELI system with only the Master GTI unit while
changes are made to the first regular GTI unit. As the
changes for each regular GTI unit or group of regular GTI
units are completed, they can be reconnected and brought
back into service. This plan is harder for those making the
changes to the GTI units, but is easier for those wanting to
use a lightly-loaded ELI system while the changes are being
made.
The order in which the regular GTI units are completed
and reconnected is important to avoid periodic disruptions
when each GTI unit is reconnected to the PCM Data Bus.
Follow the PCM Data Bus from the Master GTI unit to the
regular GTI units. Complete the regular GTI units in the
order you get to them, as you follow the PCM Data Bus.
If the Master GTI unit does not have a telephone line
connected to it, temporarily patch a telephone line to it until
one or more regular GTI units with a telephone line have
been completed and brought back into service.