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Configuration Options
C-273160-A2-GB21-50 January 1997
Table C-8
(3 of 3)
Alarm Configuration Options
Err Rate: 10E-4
Next 10E-4 10E-5 10E-6 10E-7 10E-8 10E-9 Prev
Excessive Error Rate Threshold. Sets the error rate threshold that determines if an Excessive Error Rate (EER) condition
is declared. This rate is determined by the ratio of the number of CRC6 errors to the total number of bits received over a
set period of time.
Select from the following:
10E-4 – EER is declared if more than 1,535 CRC6 errors are detected within 10 seconds (factory default).
10E-5 – EER is declared if more than 921 CRC6 errors are detected within 60 seconds.
10E-6 – EER is declared if more than 92 CRC6 errors are detected within 60 seconds.
10E-7 – EER is declared if more than 9 CRC6 errors are detected within 60 seconds.
10E-8 – EER is declared if more than 41 CRC6 errors are detected in three 15-minute intervals.
10E-9 – EER is declared if more than 4 CRC6 errors are detected in three 15-minute intervals.
AlrmRelay: Disab
Next Enab Disab Prev
Alarm Relay. Specifies whether an alarm condition for this circuit card activates the shared alarm relay on the 3000 Series
Carrier. The alarm deactivates if the condition(s) causing it is corrected. An Alarm Cut-Off issued from the SDCP (or PC
Emulation program) for a particular carrier-mounted DSU/CSU also deactivates the alarm. The carrier-mounted
DSU/CSU does not reactivate the alarm relay until all alarm conditions for the unit are cleared.
The following alarm conditions activate the alarm relay if this configuration option is enabled:
• Continuous Loss of Signal (LOS) or Out of Frame (OOF) at the network or DTE Drop/Insert (DSX-1) interface.
• Continuous Out of Frame (OOF) at any synchronous data port that has the Embedded Data Link enabled.
• Alarm Indication Signal (AIS) received at either the network or DTE Drop/Insert (DSX-1) interface.
• Yellow alarm signal received at either the network or DTE Drop/Insert (DSX-1) interface.
• Excessive Error Rate (EER) detected at the network interface.
• An Excessive Error Rate (EER) detected at any synchronous data port that has the Embedded Data Link enabled.
NOTE: This configuration option is available on carrier-mounted DSU/CSUs only.
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