Cisco ONS 15454 Troubleshooting Manual page 90

1.3.1 FEAC Send Code
Figure 1-19
The "far end" in FEAC refers to the equipment connected to the DS3XM card and not to the far end of
a circuit. In
will be sent to the connected test set, not the DS3XM-6 (far-end) port.
Figure 1-20
Test Set
1.3.1 FEAC Send Code
The Send Code column on the DS3XM-6 or DS3XM-12 card Maintenance tab only applies to
OOS-MA,MT ports configured for CBIT framing. The column lets a user select No Code (the default)
or line loop code. Selecting line loop code inserts a line loop activate FEAC in the CBIT overhead
transmitting to the connected facility. This code initiates a loopback from the facility to the ONS 15454.
Selecting No Code sends a line-loop-deactivate FEAC code to the connected equipment, which will
remove the loopback. You can also insert a FEAC for the 28 individual DS-1 circuits transmuxed into a
DS-3 circuit.
Cisco ONS 15454 Troubleshooting Guide, R8.5
1-46
Accessing FEAC Functions on the DS3XM-6 Card
Figure 1-20, if a DS3XM-6 (near-end) port is configured to send a line loop code, the code
Diagram of FEAC Circuit
Node A
Tx Tx
Rx Rx
DS3XM
(Near End) OC48
Node B
Rx
Tx
OC48
Ring
OC48
Chapter 1 General Troubleshooting
Tx
CPE
Rx
DS3XM
(Far End)
November 2009