Aethra d2000 lite User Manual
MANUALE D’USO
ISDN TESTER AND ANALYZER D2000
PRO
/D2000Lite/D2000
In this configuration, information such as FRAME and CRC SYNC, LFA alarms, AIS
and RAI, LOCAL CRC and REMOTE CRC errors is not available over the frame.
and RAI, LOCAL CRC and REMOTE CRC errors is not available over the frame.
7.3.2. G.826
Page 4 shows the values detected according to G.826 to monitor the in-service line
quality parameters.
quality parameters.
4
Goes to page 4.
This measure is disabled if an Unframed G.703 at 2Mbit test is
carried out.
carried out.
This standard, valid for 2Mb connections or higher, allows to check the access quality
without performing specific off-service tests, such as BERT G.821. See § 0.
without performing specific off-service tests, such as BERT G.821. See § 0.
G.826 measures errors and alarms in the flow through the analysis of the
synchronism blocks (LFA, CRC4) intrinsically contained in the frame.
synchronism blocks (LFA, CRC4) intrinsically contained in the frame.
The results allow to measure the unavailability flow time (UAS), number of errored
seconds (ES), number of severely errored seconds (SES) and errored blocks
(BBER) both in uni-directional mode for each direction (Downstream, Upstream) and
in bi-directional mode, by considering the flow as a single communication channel.
seconds (ES), number of severely errored seconds (SES) and errored blocks
(BBER) both in uni-directional mode for each direction (Downstream, Upstream) and
in bi-directional mode, by considering the flow as a single communication channel.
Values are shown both in absolute (ABS) and ration (RATIO) format. The
PASS/FAIL test refers to the quality objectives set in G.826.
PASS/FAIL test refers to the quality objectives set in G.826.
CAPITOLO 7. SMART STATUS
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