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20.3
Trunk conditioning
The Codirectional DCM performs trunk conditioning when it detects a loss of input.
Trunk conditioning defines the type of data transmitted on the information path.
Trunk conditioning can be defined for all outgoing transmissions on the
Codirectional DCM.
The two trunk conditioning options are:
•
two-way
•
one-way
When using one-way trunk conditioning, the path is broken only in the direction of
the fault. This means that the receive path will be broken and the transmit path will
not.
For two-way trunk conditioning, the path is broken in both directions. This means
that both the receive path and the transmit path will be broken.
If you change trunk conditioning, operation is disrupted. If you select two-way trunk
conditioning, loss of input is raised for each input and must be cleared before circuits
are reconnected.
Procedure 20-2 To configure trunk conditioning
where pp is 1 or 9
* Default
20.4
Alarm times
Alarm declaration and clearing times can be set for the Codirectional DCM. The
range for both of these times is 0.1 to 10 seconds. The default for alarm declaration
is 0.8 second and for alarm clearing is 10 seconds.
2902 MainStreet Technical Practices
May 2002
90-2906-01
CPSS circuits are disconnected on any link failure regardless
Note —
of the configured trunk conditioning.
CONFIG — POSITION — <pp> ↵ — OPTIONS — TRUNK_COND
20 — Codirectional DCM
ONE_WAY/TWO_WAY*
SK000516
20-3
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