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Switch S4 — Starting DS0 Channel Selection
If fewer than 24 channels have been activated, the user can select
which channel is first. For example, if four channels have been
activated any of the eight channel starting options may be selected.
Unused channels remain idle.
Switches S4-1, S4-2, and S4-3 select the starting channel.
NOTE:
It is not allowed to activate more channels than can be
accommodated between the starting channel and the
24th channel. For example, if ten channels have been
activated and channel 16 has been chosen as the
starting channel the D-SERV DSU/CSU will alert the
user of a configuration conflict.
In the event of a conflict the D-SERV DSU/CSU will
flash the front panel POWER, RED ALARM, and DATA
LEDs red. The last valid starting channel selected by
the user is used until the configuration error is
corrected by the operator.
Switch S4 — Starting DS0 Channel Selection
Starting Channel
1
2
3
Channel 1
Down
Down
Down
Channel 2
Up
Down
Down
Channel 3
Down
Up
Down
Channel 4
Up
Up
Down
Channel 6
Down
Down
Up
Channel 8
Up
Down
Up
Channel 12
Down
Up
Up
Channel 16
Up
Up
Up
Operator's Manual
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