Table 7-5: General Troubleshooting Procedures For Optical Transceiver Plug-Ins - Eci Telecom NPT-1020 Installation And Maintenance Manual

NPT-1020 Installation and Maintenance Manual
No. Symptoms
4 Left green LED in the
PORT 1-PORT 8 RJ-45 off
5 Right orange LED in the
PORT 1-PORT 8 RJ-45 off

Table 7-5: General troubleshooting procedures for optical transceiver plug-ins

No. Symptom
1 Green transceiver Laser
On indicator off
ECI Telecom Ltd. Proprietary
Probable cause
Link down or defective
indicator
10/100 Mbps link or
defective indicator
Probable cause
SFP module damage
Incorrect configuration
Corrective actions
No trail on the corresponding Ethernet

ports indicates a normal state.
If there are trails on the corresponding

Ethernet ports, check whether there are
SSF or CSF alarms in the corresponding
Ethernet trails. If yes, try to find the reason
for the SSF or CSF problems and solve
them, and check the link status again.
Make sure the cable connected to the

corresponding port is not damaged.
Connect the cable to an Ethernet analyzer.
If a normal signal is detected, the indicator
is defective or the port is unavailable.
Replace the NPT-1020 unit.
Check the port attributes in the LCT-APT. If

the speed status is 10/100 Mbps, it is in
normal state.
If the speed status in the LCT-APT is 10/100

Mbps, the NPT-1020 or indicator is
defective. Replace the NPT-1020 unit.
Corrective actions
On the LCT-APT, if the SFP type cannot be

successfully obtained, the IDPROM of the
SFP module may be damaged. Replace the
module.
If the SFP type information is consistent

with the expected SFP type, force the laser
on through the LCT-APT. The laser on
indicator should be on. If not, the SFP
module or the optical module is damaged.
Replace the damaged module.
On the LCT-APT, check whether there is an

SFP-type-mismatch alarm in the
corresponding optical interface.
If yes, check the expected SFP type first.

Correct it if it is not correct.
Then, check the SFP module type. If it is

not the same as the expected SFP type,
replace the SFP module with the proper
type.
Maintenance
7-9