Specifications

Installation and Operation Manual Chapter 3 Configuration Instructions
DXC-100PSX About Menu 3-27
Table 3-6. Error Conditions That Cause Switchovers
Error Conditions Switchover Occurrence
Frame Sync pulse: Missing (bus error) A frame sync pulse error occurs when there is a problem from the
SMC by sending a wrong pulse or the device is not receiving the
pulse correctly
System Clock: Missing (bus error) The system clock is lost
Backplane Timeslot Management: Invalid
(bus error)
The backplane is inundated with too many timeslots
Communication with System Manager:
Lost (bus error)
The device has not received any messages from the SMC and the
device responds that it is not present
Rear Card: Missing (bus error) Rear card is not detected. The device will reset once the rear card
has been detected
Framer: Bad (general error) A framer is bad. There is a mismatch between the current value
read from the hardware and the values recorded by the software
Restoring after a Switchover
Restoring can only be accomplished manually via the Nest Summary Menu. When
a previously offline primary device is in standby mode, the
Restore command
forces the selected device to online.
If the selected device can not be restored (i.e., switched over) an error message
will appear on the screen and no other action will occur.
3.7 About Menu
The DXC-100PSX About Menu displays information about the DXC-100PSX rear
card hardware revision levels and the software and hardware revision levels for
the Protection Switch Controller Card.
Access the DXC-100PSX About Menu
1. From the DXC-100 Nest Summary Menu, place your cursor on the
DXC-100PSX field and press <Enter>.
30. From the Protection Switch Main Menu, place your cursor on the
About field
and press <Enter>. The following menu appears: