Performance Management - Ericsson MINI-LINK TN R3 ETSI Technical Description

6.5

Performance Management

6.5.1 General
MINI-LINK TN R3 supports performance management according to ITU-T
recommendation G.826.
The following performance counters are used for the E1 and STM-1 interfaces:
•
•
•
•
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The performance counters above are available for both 15 minutes and 24
hours intervals. The start time of a 24 hours interval is configurable.
The following counters are stored in the NE:
•
•
Specific information on performance management is also available as listed
below:
•
•
Performance data is stored in a volatile memory, so that a restart will lose
all gathered data.
6.5.2 Bit Error Testing
Each NE has a built-in Bit Error Ratio Tester (BERT) in all plug-in units
carrying traffic. The BERT is used for measuring performance on E1 interfaces
according to ITU standard O.151. A Pseudo Random Bit Sequence (PRBS)
with a test pattern 2
As with loop tests, bit error testing may be used for system verification or for
fault location.
4/1555-CSH 109 32/1-V1 Uen B 2007-09-14
Errored Seconds (ES)
Severely Errored Seconds (SES)
Background Block Error (BBE) (only structured interfaces)
Unavailable Seconds (UAS)
Elapsed Time
Current 15 minutes and the previous 96x15 minutes
Current 24 hours and the previous 24 hours
Performance counters for Ethernet traffic are described in Section 3.6.2
on page 33.
Performance data for the Radio Terminal is described in Section 4.8 on
page 92.
15
–1 is sent through the selected interface.
Management
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