Multiple Carrier Mounting And Cabling Self Test - Lucent Technologies TransTalk 9000 Installation And Use Manual

Multiple Carrier Mounting and Cabling Self Test

Wait a few seconds after powering up the carriers, then verify that the red OUT OF
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SYNC LEDs on all carriers are lit. This is normal when no radio modules have yet
been installed. The CONTROL/EXPANSION LEDs should also be lit and blinking:
Model 117A4 control carrier = Green blinking
Model 117A4 expansion carrier(s) = Green blinking
A Model 117A3 carrier has no CONTROL/EXPANSION LED, but the DIP switch in Slot 4
of the carrier must be set correctly to either Control or Expansion.
The following illustration shows the correct LED lights for a four-carrier installation
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with no radio modules installed yet. This example installation has three 117A4
carriers—one acting as the control carrier and the other two acting as expansion
carriers—and one 117A3 carrier acting as an expansion carrier.
At this stage of your installation, the LEDs
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displayed should match the third or sixth lines
of the SYNC and CONTROL/EXP LED Codes label,
depending on whether the carrier is the control or an
expansion carrier.
If the LEDs on your installation do not reflect
4
this pattern, there is probably a mistake in the
cabling. Power down the carriers and check that you
have followed Steps 6 through 8 in "Mounting and
Cabling Multiple Carriers" correctly. If you are still
having problems, see Chapter 5, "Troubleshooting."
If your LEDs match the pattern in the illustration,
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you can feel confident that your carriers are
cabled correctly. Power down the carriers and go on
to "Installing a Single Radio Module in Each Carrier."
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