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Raisecom
iTN2100 (P100R002) Hardware Description
18 64K crossconnection card
Raisecom Technology Co., Ltd.
202
18.1.3 LEDs
There are three LEDs on the OPCOM3500E-DXC-DS0 panel, as listed in Table 18-1.
Table 18-1
LEDs on the OPCOM3500E-DXC-DS0 panel
Interface
Status
Description
PWR
Green
Power LED
Green: the power supply is normal.
Off: the power supply is abnormal.
SYS
Green
System status LED
Green: the system is working improperly.
Off: the system is working improperly.
Blinking green: the system is working properly.
ALM
Red
Alarm LED
Red: TU-AIS or TU-LOP alarms are generated.
Off: no TU-AIS or TU-LOP alarms are generated.
18.1.4 Alarms
Table 18-2 lists alarms of the OPCOM3500E-DXC-DS0.
Table 18-2
Alarms of the OPCOM3500E-DXC-DS0
Alarm
Cause
Level
E1 LOF alarm
The TX clock of the peer device fails.
The E1 connector of the peer device is improperly
connected; the attenuation of sent signals is over great.
The receiving reference clock of the card fails.
Critical
E1 AIS alarm
Timeslot of the backplane of VC12 corresponding to
the local E1 is faulty or improperly configured.
The E1 channel of the remote PDH device is faulty or
improperly configured.
Minor
E1 CRC alarm
The working mode of E1 in the peer or local device is
improperly configured.
CRC at the E1 sending side of the peer device is
disabled.
The TX clock of the peer device fails.
The E1 connector of the peer device is improperly
connected; the attenuation of sent signals is over great.
The receiving reference clock of the card fails.
Minor
E1 E-3/6 alarm
The working mode of E1 in the peer or local device is
improperly configured.
CRC at the E1 sending side of the peer device is
disabled.
The TX clock of the peer device fails.
The E1 connector of the peer device is improperly
connected; the attenuation of sent signals is over great.
The receiving reference clock of the card fails.
Minor