Filter
Top Products
IPmux-1/1E Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics
Performance Monitoring and Troubleshooting Statistics 4-11
Table 4-3. E1/T1 Alarms (Cont.)
Alarm Description
SES A Severely Errored Second is a second containing one of the following:
320 or more CRC errors events
One or more OOF defect
One or more AIS events occurred (T1 only)
The SES counter will be cleared after reaching 10 and an UAS will then be activated.
Recommendations:
Check physical link integrity. See also ES alarm recommendation.
UAS Unavailable Second parameter refers to the number of seconds during which the interface is unavailable. The UAS counter will start increasing after
10 consecutive SES occurrences and will be deactivated as a result of 10 consecutive seconds without SES. After SES clearance the UAS counter will then
diminish 10 seconds from the overall count.
Recommendations:
See above recommendations.
LOMF A Loss of Multi Frame indicates there is no sync on the multi frame mode, i.e., the receiving device is unable to detect the four ABCD bits pattern on
TS16 MSB in frame 0 for two consecutive multi frames. Available only for E1 Multi-Frame mode (CAS).
Recommendations:
Check physical link integrity, signaling method (CAS enable only), and framing-related parameters.