MINI-LINK TN R3 ETSI
Plug-in
Unit
BERT
E1
6668
TDM Bus
NE or
External equipment
Figure 87 BERT in combination w ith an external loop
The BERT is started and stopped by the operator and the bit error rate as a
function of the elapsed time is the test result. The test can be started and
stopped locally or remotely using the management system.
Several BERTs can be executed concurrently with the following limitations:
• One BERT per plug-in unit
• One BERT on a protected 1+1 E1 SNCP interface per NE
Note: BERT is not valid for MMU2 F/C.
1
12
4
/1555-CSH 109 32/1-V1 Uen B 2007-09-14
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