Cisco 15310-MA Průvodce řešením problémů stáhnout pdf (Strana 65)

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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, Release 9.0

78-18394-01

Chapter 1 General Troubleshooting

Troubleshooting WBE-28 and WBE-84 Cards with Far End Loopcodes on DS1 Ports

Figure 1-4 Diagram of FEAC Circuit

1.4.1 FEAC Send Code

The Send Code column on the WBE-28/WBE-84 cards 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 15310-MA. Selecting No

Code sends a line-loop-deactivate FEAC code to the connected equipment, which will remove the

loopback.

1.4.2 WBE-28/WBE-84 Inhibit FEAC Loopback

WBE-28/WBE-84 DS3 ports initiate loopbacks when they receive FEAC line loop codes. If the Inhibit

FE Lbk check box is checked for a DS3 port, that port ignores any FEAC line loop codes it receives and

will not loop back (return them). If you inhibit a DS3 port's far end loopback response, this DS3 port is

not restricted from terminal or facility loopbacks.

1.4.3 FEAC Alarms

When an ONS 15310MA - WBE-28/WBE-84 DS3 port receives an activation code for a FEAC

loopback, it raises the “LPBKDS3FEAC” condition on page 2-108. The condition clears when the port

receives the command to deactivate the FEAC loopback. If a node sends a FEAC loopback command to

the far end, the sending node raises a “LPBKDS3FEAC-CMD” condition on page 2-109 for the near-end

port.

1.5 Troubleshooting WBE-28 and WBE-84 Cards with Far End

Loopcodes on DS1 Ports

WBE Cards support Far End Loopcodes when the DS1 port is operating in ESF Framing mode. Click

the WBE-28/WBE-84 Maintenance->DS1 tab to reveal additional columns, namely , "Inhibit FE Lbk"

and "Send Code". Here we are using the term FE Loopcodes instead of FEAC in DS1, since DS1

supports only Far End Loopcodes, but NOT Alarms.

159522

OC-N CE-MR-10XCOC-N

Test Set

XCCE-MR-10

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