Alcatel-Lucent 1643 AMS Operation Manual page 77

Alarm messages
Legend:
C
N
segd
LOSW
The "segd" bit in the SHDSL overhead is set if a LOSW condition is detected at the
customer-side SHDSL port of an SRU. If there is a second SRU in the SHDSL span
(located in the upstream direction between the LTU and the SRU where the LOSW
condition is detected) then the "segd" bit is transparently passed through this SRU.
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365-312-803R7.2
Issue 4, May 2007
downstream
SHDSL
segment
LTU SRU
C N
segd
upstream
Customer side
Network side
"segd" bit in the SHDSL overhead (segd means "segment defect")
Loss of sync word condition, reported to the LTU by using the EOC
message 141
Alcatel-Lucent - Proprietary
See notice on first page
SHDSL
segment
NTU
C N
This SHDSL segment
LOSW
has failed
Failed segment in SHDSL span
C
1-57