Specifications

Chapter 6 Diagnostics and Troubleshooting Installation and Operation Manual
6-6 Handling Events MiTOP-E1/T1 Ver. 1.0
Clearing Events
³ To clear the log file:
• From the Log File menu, click Clear Table
All events are deleted from the log.
Table 6-4 presents the event types that appear in the log file.
Table 6-4. Event List
Event Description Corrective Action
Phy_Up Ethernet physical link is up None
Phy_Down Ethernet physical link is down. One of the following can
cause Ethernet interface failure:
• MiTOP-E1/T1 has been removed from the host device
or the SFP port on the host has failed.
• MiTOP-E1/T1 shut down the Ethernet link, when the
TDM interface failed (only when fault propagation is
enabled).
• MiTOP-E1/T1 is not compatible with the type or
operation mode of the SFP port in the host device.
• Check the physical connection to
the Ethernet interface.
• If the fault propagation is
enabled, check the TDM
interface.
• Check the SFP port of the host
device. It must operate at
100 Mbps with full duplex.
TXDISABLE TX Disable signal has been sent by the host device. Check the signal input from the
host device.
LOS Loss of signal has been detected • Check the E1/T1 cable
connection.
• Check input TDM signal.
BPV err exc Bipolar violation errors exceeded threshold “-“
BPV err A bipolar violation error has been detected “-“
frame slip exc Frame slips exceeded threshold “-“
CRC-4 exc CRC-4 errors exceeded threshold “-“
exec err ratio Bit error rate of the link exceeded 10-3 “-“
AIS occurred AIS has been detected “-“
AIS red alm AIS and loss of frame alignment have been detected “-“
yellow alm Remote loss of frame synchronizarion has been
detected
“-“