Maintenance Guide Part 1

NeTIS MAINTENANCE GUIDE – Version 1.1 37/139
If, after re launch, the service console indicates that the switch connection is correct, refer to
the following case where only the network management terminal is operational on the
network. Otherwise, after checking the correct operation of the network management terminal
and the link, change the CPU board.
4.2 The network management terminal (NeTIS-M) is the
only operational equipment on the network
The network management terminal’s standby screen shows that the switch is connected and
that no other equipment is connected (base station, telephone) or these indications are
random.
The base stations are not transmitting or are in degraded mode.
The dispatching stations are no longer operational.
Telephone access is no longer operational.
This is probably a fault in the CPU board, or a problem with the switch internal bus; in order
to find out, disconnect the switch extension unit if it has one and reset the CPU board:
If all the resources connected to the main switch unit are operational again, the fault
comes from the extension (or the cable connecting it)
Otherwise remove all the communications boards, the codec boards and the SUPIP
board from the chassis. Reset the CPU board and check that it detects no resources
(except for the time base board); reconnect a communications board and check that it
is detected; if it is not detected, the CPU board is defective.
If the resource is detected, continue reconnecting the boards one by one and check
each time that they are detected correctly. If a board is not detected or is detected with
a wrong location number, that board is defective and may have caused a major
disturbance to the entire equipment.
4.3 No equipment on the network is operational except for
the network management terminal (NeTIS-M) which