AT&T MERLIN LEGEND Release 3.0 Installation Manual page 438

Module Problems
7 Go to the blue field on the cross-connect field and, starting at the top left
corner, push the patch cord onto the first connecting block.
8 Using the diagonal pliers or wire strippers, cutoff the other end of the
patch cord and expose the pairs.
Do not cut out too much of the cord, because you need the length to test the
top rows of the cross-connect field.
Attach the handset's clips, which extend from the base, to the exposed
9
wires of the patch cord.
10
Set the switch on the side of the handset to MONITOR.
11 Listen to the handset for the tone device signal.
If you hear the signal, you have found the correct wires. Correctly label
both the cross-connect field and the outlet.
If you don't hear the signal, remove the patch cord from the
connecting block and push the patch cord down onto the connecting
block to the right of the one just tested. Keep moving the patch cord to
the next connector block on the right until you find the pairs that carry
the tone device signal.
Upgrading Circuit Module Firmware
Beginning with Release 3.0, MERLIN LEGEND Communications System
allows upgrades or reinstallation of circuit module firmware through the
PCMCIA interface slot on the Release 3.0 processor module. The interface
slot is a standard interface through which information may be added to or
retrieved from the system.
Circuit modules introduced with Release 3.0 or later may use flash ROM to
retain circuit module firmware, Unlike traditional ROMs, flash ROM can be
written and erased without being removed from the circuit module. The first
circuit module to include this feature is the 800 GS/LS-lD.
4-60 Control Unit Problems