Specifications
Chapter 3 Configuration Instructions Installation and Operation Manual
3-18 Setting Up Multiple NDRGs DXC-100PSX
Refer to the Nest Summary Menu in 1
Figure
3-18
, as noted in the
Device State
column, the redundant device in slot 1 is
Online
and actively protecting a failed
device in slot 2 of the Narrowband Redundancy Group. In this scenario, the T1/E1
primary device is in
Standby
mode (i.e., waiting to be
Restored)
. A
Restore
can
only be performed manually by the operator. Additional information on
Restoring
After A Switchover
is discussed later on in this chapter. For more detailed
information on
Device States
or the
Nest Summary Menu
, refer to the
Management chapter of this manual.
Alarms
The Alarm column displayed on the Nest Summary Menu is used to indicate an
error or problem(s) with the device or port. Alarm conditions are designated as
Major, Minor
, and/or
Critical.
To discover specific details about the cause of the
alarm, press E to expose the alarm. For more detailed information on Alarms,
refer to the
Alarms
chapter in the DXC-100 User Guide.
On the Nest Summary Menu, next to the
Alarm
column, error conditions are
indicated by an asterisk (*) to the left of the status condition. The asterisk is a
flag for error conditions such as Bipolar Violations, CRCs, BERT errors, etc. The
asterisk can be cleared by pressing C. However, as long as errors are occurring,
the asterisk will appear on the screen.
The
Toggle Alarm Contacts
field is useful if you have an external alarm panel that
can be physically connected to the DSMC.2 rear interface board. If you have an
external alarm device, you can enable this feature to invoke an audible or visual
notification should an alarm occur. You can disable the alarm from here, as well.
Critical Alarms within a redundancy group will cause a switchover to occur.
View Narrowband N+1 Device Redundancy Details
1. From the Narrowband redundant device’s Main Menu, place your cursor on
the
N+1 Redundancy
field and press <Enter>. The following screen appears:
N+1 Redundancy Menu
-------------------
Protected Slot: 02
Device Redundancy
Figure
3-19. N+1 Redundancy Menu - Narrowband (D8E1T1) Redundant Device
20. Place your cursor on the
Device Redundancy
field and press <Enter>. The
following display appears:
Note