D-242
Cisco Transport Manager Release 7.2 User Guide
78-17630-01
AppendixD Slot Property Information—FC_MR-4, FMEC, Multirate, Optical, and Transponder Cards
Transponder Cards
D.5.8.4 Current Tab
The Current tab allows you to assign thresholds and alarm severities for the transponder laser current
levels.
Background Block Errors Sets the high threshold for the number of B1 background block errors (BBE) and the alarm
severitylevel. An errored block is a block in which one or more bits are in error. A background
block error is an errored block that does not occur as part of a severely errored second.
Bit Error Rate Sets the high threshold for the B1 bit error rate and the alarm severity level. The BER is the
ratio of received bits that contain errors.
Unavailable Seconds Setsthe highthresholdfor thenumberof B1unavailableseconds (UAS)andthe alarmseverity
level.The detection of 10 consecutive SES begins a period of UAS. The 10 SES detected are
part of the UAS. The ES and SES counters decrement by 10 seconds and the UAS counter
increments by an equivalentnumber of seconds. A new period of available time begins at the
onset of 10 consecutive non-SES events.
FEC Counters
Errored Seconds Sets the high threshold for the number of FEC errored seconds (ES) and the alarm severity
level.
Severely Errored Seconds Setsthe highthreshold forthe numberof FEC severely errored seconds (SES) and the alarm
severity level.
Background Block Errors Sets the high threshold for the number of FEC backgroundblock errors (BBE) and the alarm
severity level.
Unavailable Seconds Sets the high threshold for the number of FEC unavailable seconds (UAS) and the alarm
severity level. The detection of 10 consecutive SES begins a period of UAS. The 10 SES
detectedare part of the UAS. The ES and SES counters decrement by 10 seconds and the UAS
counterincrements by an equivalent number of seconds. A new period of available time begins
at the onset of 10 consecutive non-SES events.
Error Corrected Rate Setsthe high threshold for thebit error corrected rate (ECR)and the alarm severity level. The
ECR is the ratio of FEC bit errors corrected to bits transmitted.
UncorrectedCodewords Rate Setsthe high threshold for the uncorrected codeword rate (UCR) and the alarm severity level.
The UCR is the ratio of uncorrected codewords to codewords transmitted. A codeword is a
block of N symbols that carry K information symbols and R redundant symbols (N = K+R).
TableD-294 Field Descriptions for the Quality of Service Tab (continued)
Field Description
TableD-295 Field Descriptions for the Current Tab
Field Description
Laser 1
Value When the Update button is clicked, displays the current value of the Laser 1 current (in mA).
Degrade Sets the degrade threshold for the Laser 1 current, in mA, and the alarm severity level.
Fail Sets the failure threshold for the Laser 1 current, in mA, and the alarm severity level.