CANOGA PERKINS 2461 E1 Modem - Manual (Page 55)

EdgeAccess Universal Chassis System
2461 Modem User Manual 6-5
6.8 Intermittent Problems In Data Transmission
1. Check the AIS LED on the ELIM. If Amber, the modem is receiving "all 1's."
2. Check the Alarm Indication Signal line on the Alarm Systems screen. If it says
"YES," then the modem is receiving AIS. Check the connecting equipment for proper
setup.
3. To verify errors received by the modem, start a session with the Link Error Counter
screen. Every modem in the link will appear on this screen. Press Tab to reset the
counter, and verify the type and frequency of errors that occur. The types of errors
that accumulate help indicate which link or module is failing. Please refer to the Link
Error Counter section of this manual.
4. View the SQL LED. If it flickers red, data transfer is intermittent, and not reliable. To
correct, check cabling integrity. If SQL LED is red, data is below threshold. Errors
could be problems with the Far End Tx, Far End Rx, or a bad cable.
5. LOS LED on ELIM indicates loss of electrical signal. Intermittent problems in data
transmission will cause the LOS LED to also blink intermittently. Errors could be:
• Bad near-end user equipment.
• Bad ELIM.
• Cabling problem.