SHDSL features
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Electronic label
A user can remotely retrieve, on request, information of an electronic label of an NTU
or SRU. The LTU keeps this information in its database. The GUI can display the
information on request; it is not used by the LTU for any other purpose.
The following information can be retrieved:
• Module type
• Vendor SISA identifier
• Production year
• Production number
• Product identification
• Manufacturer ID
• Hardware version
• Hardware revision
SHDSL Performance Monitoring
The performance of SHDSL segments that are terminated on the LTU, SRU and NTU
can be monitored. The SHDSL standard (ITU-T Rec. G.991.2) prescribes a set of
parameters that needs to be monitored and stored in 15 minute and 24 hour bins for
near-end Performance Monitoring. The following table provides an overview of the PM
parameters:
Parameter Name Definition
CV/BBE Code Violation/background
Block Error
Each CRC6 anomaly is counted a
CV/BBE during non-SES and
non-UAS seconds
ES Errored Seconds Each second with one or more CRC6
anomaly is counted as an ES, unless
that second is UAS
SES Severely Errored Second Each second with 50 or more CRC6
anomalies (> 30%)or one or more
LOSW events is counted as an SES,
unless that second is UAS
LOSWS Loss of SyncWord Second Each second in which LOSW is
declared as LOSWS
UAS/US Unavailable Second Each second that is part of
unavailable time (UAT) is counted as
UAS. UAT is declared at the begin of
10 consecutive SES and cleared at the
begin of 10 consecutive non-SES.
SHDSL Overview
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365-312-801R7.2
Issue 3, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
12-13
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