ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation 4 – Setup & Configuration
Version 2.11, August 2011
4-22 Harris Corporation
Intraplex Products
Table 4-11. MRDN Group Menu Functions
Group Item Description
CNFG Off Never switches modules due to module failure.
RVRT
Factory default
Revertive module switching. Switches to backup module upon failure of primary
module and then switches back to primary if the failure condition is cleared or if the
backup module has failed.
NRVT Non-revertive module switching. Switches to backup module upon failure of primary
module and then switches back to the primary if the backup module has failed.
Exit Exit the CNFG sub-menu.
PRIM N/A Displays the usage of the primary module. If the ON/OFF indicator light is green (ON
state), the primary module is being used. If the ON/OFF light is red (OFF state), the
backup module is being used.
Also, you can use this switch to manually generate a switch to the primary module
by momentarily toggling the SET/NEXT switch to the UP position.
BACK N/A Displays the usage of the backup module. If the ON/OFF indicator light is green (ON
state), the backup module is being used. If the ON/OFF light is red (OFF state), the
primary module is being used.
Also, this switch can be used to manually generate a switch to the backup module by
momentarily toggling the SET/NEXT switch to the UP position.
LINE Same
Factory default
If Same, this function switches to the backup module and backup line upon a
primary module failure (same type T1 facility for primary and backup lines).
Diff If Diff, switch to the backup module and backup line upon a primary module failure
(different type T1 facility for primary and backup lines).
Note that the exception to the above rule is if line redundancy mode LRDN = NOBK
(no backup line). If LRDN = NOBK, a primary module failure results in a switch to
primary line.
If Framing Type (SF versus ESF) is different for the two lines, selection must be
“Diff.”
If the line code is different (AMI versus B8ZS), a Diff setting is recommended.
If TLBO (Transmit Line Buildout) setting differs by more than 7 dB between primary
and backup, a Diff setting is recommended.
Table 4-12. LRDN Group Menu Functions
Group Item Description
CNFG Off Never switch lines due to line failure.
RVRT RVRT – Revertive switching – Switches to backup line upon failure of primary
line and then switches back to primary line if primary line becomes “better”
than the backup line or if both the primary and backup lines are good.
NRVT NRVRT – Non-revertive switching – Switches to backup line upon failure of
primary line and then switch back to the primary line if the primary line
becomes “better” than the backup line.
NOBK
Factory default
No backup line – Notifies controlling common module that no backup line is
available. In this condition, module only redundancy is implemented if the
primary line fails, the CM-5RB modules do not switch to the backup line. Also,
shelf alerts and alarms are not generated based on the backup line condition.
Exit Exit the CNFG sub-menu.
PRIM N/A Displays the use of the primary line. If the ON/OFF indicator light is green (ON
state), the primary line is being used. If the ON/OFF light is red (OFF state),
the backup line is being used.
You can also use this item to manually generate a switch to the primary line
by momentarily toggling the SET/NEXT switch to the UP position.
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