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computer to one of the LSO ports. Do a command for the LSO loca-
tion and receive the COMPLD message. This is the check for the
self-healing of the system for a East to West failure.
N.
Reconnect the East Receive fiber and disconnect the West receive
fiber. MAT alarm Point 3 clears. Points 6 and 9 on the MAT module
(Shelf C Slot 13), relay B on the MAT, and relay modules 10A and
11A will all come on or energize. Do a command for a LSO and
receive the COMPLD message. This is the check for the self-heal-
ing of the system for a West to East failure.
O.
Restore the fiber equipment. All alarms on the local MAT turn off.
At a LSO location, completely shut down the East or West terminal
by removing the receive and transmit fibers in one direction or one
of the connections from he fiber terminal to the DSM assembly. At
the Service Node, MAT alarm points 3, 6 and 9 will operate as well
as relay modules 10A through 13A, and 10B through 13B. (Points 1
or 4 will also turn on if the LSO is the first one from the Service
Node). Check the communications to each LSO on either side of the
LSO that you put in failure, by sending a TL1 command to every
LSO. After checking that the system is working, restore the LSO
that had been placed in the failure mode. This is a check for self-
healing on a complete failure in both directions at a given location.
P.
The 46017 will put out an audible alarm signal whenever there is a
MAT alarm at any location. Disable the audible device with the
lower ACO switch on the module.
Q.
After all ports have been checked out and the connectons are made
to the transport channels, (such as Datakit or Dantel's 46095 X.25
module), have the Alarm Center issue commands to every LSO.
R.
This completes the testing procedure.
INSTALLATION
