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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, Release 9.0
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Chapter 1 General Troubleshooting
Troubleshooting WBE-28 and WBE-84 Cards with Far End Loopcodes on DS1 Ports
Figure 1-5 Accessing Far End troubleshooting Functions on the WBE Cards
Note The term "Far End" refers to the equipment connected to the WBE card and not to the far end of a circuit.
1.5.1 FEAC Send Code
The Send Code column on the WBE-28/WBE-84 card Maintenance tab only applies to OOS-MA,MT
ports configured for ESF framing. The column lets a user select No Code (the default) or line loop code.
Selecting line loop code inserts a line loop activate Far End Loopcode in the ESF 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 Far End Loopcode to the connected equipment, which will remove
the loopback.
1.5.2 WBE-28/WBE-84 Inhibit FEAC Loopback
WBE-28/WBE-84 DS1 ports initiate loopbacks when they receive Far End line loop codes. If the Inhibit
FE Lbk check box is checked for a DS1 port, that port ignores any Far End line loop codes it receives
and will not loop back. If you inhibit a DS1 port's far end loopback response, this DS1 port is not
restricted from terminal or facility loopbacks.
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