Ericsson LBI-39076B system manual Plan B Half at a Time

LBI-39076B MAINTENANCE

∙Replace the GTI Master software on the GTI Interface Board with V1.04 GTI Master software.

∙Re-attach the top cover, and re-install in cabinet (don’t forget to fasten rear supports).

∙Re-connect the Power/Audio plug, Phone plug, PCM Data Bus plugs, and two Site Controller data link plugs to the back panel of the Master GTI unit.

∙(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).

3.Each Regular GTI (Modify Each Regular GTI):

∙(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), Phone plug, and PCM Data Bus plugs 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, Phone plug, and PCM Data Bus plugs to the back panel of the Master GTI unit.

∙(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).

∙Repeat for each GTI unit.

4.System Manager (Enable All):

∙Using System Manager screen 10, panel 1:4, reconfigure the Interconnect field to Y for each equipped radio channel.

Plan B - Half at a Time

Plan B is to briefly take the ELI system completely out of service while the first half of the regular GTI units are disconnected, then run the ELI system at half capacity while changes are made to the first half of the regular GTI units, then take the ELI system completely out of service while changes are made to the Master GTI unit, and then run the ELI system at half capacity while changes are made to the second half of the regular GTI units. This plan is harder for those making the changes to the GTI units, but is easier for those wanting to use a heavily-loaded ELI system while the changes are being made.

The first group of GTI units is the group of GTI units closest to the Master GTI unit (along the PCM Data Bus), and consists of approximately half of the GTI units.

1.System Manager (Disable All):

∙Using System Manager screen 10, panel 1:4, reconfigure the “Interconnect” field to “N” for each radio channel.

∙Using System Manager screen 14, reconfigure the “Line Active” field to “N” for each line number.

2.Each GTI in 1st Group (Disconnect 1st Group):

∙Disconnect the PCM Data Bus plugs from the back panel of each GTI unit in the first group, but re- connect the segments to maintain bus continuity end-to-end.

3.System Manager (Enable all but 1st 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 second 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 second group.

46