SHDSL Network Termination Unit authentication error
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Alarm identifier
NTUcNAE
Information
Interworking is not possible between the LTU and the respective NTU modem
which is connected at an SHDSL port of the LTU.
Note that the
SHDSL Network Termination Unit authentication error
alarm is applicable to NTU modems of type SDSL-NT10ETH only.
Alarm category
Equipment
ASAP
sdsl
Alarm severity
(default setting)
Deferred
Reporting state
(default setting)
Reported
Local indications
–
Cause
No successful authentication could be achieved between the LTU and the NTU
modem.
Actions
Make sure that all SHDSL ports on the respective SDSL-NT10ETH modem are
connected with the same LTU.
Note(s)
Because the SDSL-NT10ETH modem is connected via a number of parallel
SHDSL interfaces, there is a possibility of misconnection. An NTU will only
accept configuration commands from a single LTU.
As a means to ensure that an NTU is communicating with a single LTU over
all its interfaces, the LTU sends a “signature” as part of the startup procedure,
after an attached SDSL-NT10ETH modem is detected.
The signature is sent in a special EOC-ext. message before any configuration
data are transmitted. In case the authentication is unsuccessful (for example, if
an NTU is connected with multiple LTUs; cf.
– wiring error type III), then the NTU returns an error code (0xB1)
to the LTU. If, after 3 retries, the authentication still remains unsuccessful,
then an
SHDSL Network Termination Unit authentication error
alarm
is reported.
Alarm messages
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Alcatel-Lucent - Proprietary
See notice on first page
365-312-803R7.2
Issue 4, May 2007
Summary of Contents for 1643 AM
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