Diagnostic tests Crocus CNV
144 Reference manual
11.5.2 Analogue loop
Initiating the AL test establishes an analogue loop on the local Crocus CNV. This loop is compliant to loop
3 as described in the ITU-T recommendation V.54.
The loop is situated immediately behind the onboard G703 interface of the Crocus CNV, schematically
represented as follows:
Figure 11.1: Analogue loop
How to use this test?
Example:
Start an ALET test on the Crocus CNV. This is a sort of self-test of the Crocus CNV. The quantity of
errors (check the status attribute errorCount) could be an indication of possible problems on the Crocus
CNV.
onboard
G703
interface
Crocus IF CNV
TX
RX
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