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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 1 Alarm Troubleshooting
Alarm Procedures
A facility termination equipment failure alarm occurs when there is a transmit failure on the E1-N-14
card because of an internal hardware failure. The card must be replaced.
Caution Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15454 SDH. Plug the wristband cable into the ESD jack located on the middle-right outside edge
of the shelf assembly.
Procedure: Clear the TRMT Alarm on the E1-N-14 Card
Step 1 Replace the E1-N-14 card reporting the failure.
Note When replacing a card with an identical type of card, you do not need to change the CTC
database.
Step 2 Login to http://www.cisco.com/tac to obtain information about handling the failed card or for more
information, login to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml to obtain a
directory of Cisco Technical Assistance Center toll-free numbers for your country.
1.5.72 TRMT-MISS
• Major, Service-affecting
A facility termination equipment transmitter missing alarm occurs when the facility termination
equipment detects an incorrect amount of impedance on its backplane connector. This means the
transmit fiber cable is missing on the E1 port, or the backplane does not match the inserted card. For
example, the alarm is raised if an SMB connector or a BNC connector is connected to an E1-N-14 card
instead of an E3-12 card.
Note E-1s are four-wire circuits and need a positive and negative connection for both transmit and receive.
Procedure: Clear the TRMT-MISS Alarm
Step 1 Check that the device attached to the E1 port is operational.
Step 2 Verify that the cabling is securely connected.
Step 3 Verify that the pinouts are correct.
Step 4 If Steps 1 – 3 do not clear the alarm, replace the transmit fiber cable.
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