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SONET_Usr.bk Page 22 Wednesday, December 13, 2000 11:11 AM
4
Mapping may be selected from a pictorial display by moving the cursor to MAPPING
and pressing
Use
Layer choice. Use
Use
display.
5 If TU-2 mapping is chosen, TU CONCATENATION selection is enabled, choose
6 If TU-3, TU-2, TU-12 or TU-11 mapping is chosen, choose the test tributary
7 Choose the PATTERN type and PRBS polarity.
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Choose the required
F/G MAPPING
and the BACKGROUND selection. The FOREGROUND
B/G MAPPING
selection is the channel that is chosen for test purposes. The BACKGROUND
patterns are not used for test purposes and are either the same as the test channel or
set to UNEQUIPPED.
SET
.
and
to move between AU Layer choice, TU Layer choice and Payload
and
to choose the mapping.
SET
to confirm your choice and return to the
or the tributary at which the concatenation begins, TU2-2C through TU2-6C.
OFF
The BACKGROUND, PATTERN IN OTHER TU-2's is fixed at NUMBERED, that
is, each TU-2 contains a unique number to allow identification in case of routing
problems.
CHANNEL, including the STM-1 for an STM-1/STM-16 signal.
and PAYLOAD TYPE, then select
SDH
MAIN SETTINGS
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