Alcatel-Lucent 7342 - ONT Release 2.0 Application Notes

3 — Application notes
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 3-3
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
Table 3-2 Application notes for ONT 4.3.5
3.4 ONT Release 2.0 application notes
Table 3-3 describes the application notes for ONT Release 2.0.
Table 3-3 Application notes for ONT 2.0
Application note Details Reference
Provisioning
If a traffic load above 72 Mbps
with a 64-byte packet size is
present in the upstream
direction before ONT startup
completes, the ONT may not
start properly.
Before the ONT startup completes, remove the traffic
source or reduce the data rate in the upstream direction
to below 72 Mbps.
—
NTP packets received at the
ONT are terminated.
The ONT does not replicate NTP packets downstream to
CPE devices.
—
The M-300-A does not support
NTP
Ensure NTP is not enabled on the M-300-A. —
The PM_ONTENET_SQE
performance monitor counter is
not supported.
——
The VLAN translation feature
has an impact on how P-bits are
handled by the ONT.
Consider the following:
• P-bits are maintained in the upstream direction.
• In the downstream direction, P-bits are maintained
from the OLT to the ONT; however, the P-bit sent to
the user from the ONT is always the higher P-bit value
associated with that service.
See the QoS chapter in the
7342 ISAM FTTU Product
Information Manual
Application note Details Reference
Hardware considerations
CES encapsulation of
structured, unstructured, and
fractional DS1 or E1
The business ONT provides two RJ-48C ports supporting
structured, unstructured, and fractional CES
encapsulation of DS1 (100 Ω) or E1 (120 Ω or 75 Ω)
subscriber connections for transport across the GPON.
Initialization
No support of concurrent SFTP
transfers
The P-OLT supports a single SFTP transfer at a time. Do
not perform concurrent transfers.
—
Provisioning
Alarm application notes
• the SWVER and SWDLIP alarms are raised when an
ONT is provisioned with a SWVERPLND that differs
from the SWVERACT and SWVERPSV
• to avoid excessive P-OLT loading, clear all
extraneous ONT alarms by setting inactive ONTs
out-of-service
See the alarms chapter in
the 7340 FTTU ONT
Troubleshooting Guide
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