1 — ONT and MDU overview
Alcatel-Lucent 7302 ISAM | 7330 ISAM FTTN | 7360 ISAM FX ONT R04.06.02 November 2013 1-25
3FE 55873 AAAA TCZZA Edition 01
ONT Product Information Guide
• Maintenance (including password change, revert to factory default, reboot
device, and upgrade tasks)
• Status (including the display of device info, WAN status, and PON Statistics
information)
The Package C ONT that supports limited configuration using web-based GUIs is the
I-241W-P indoor ONT.
1.7 ONT physical security
Physical ONT security is provided to limit unauthorized access to remote or outdoor
units. Tamper-resistant seals and bolts are used to secure the TELCO access cover to
the ONT and to prevent easy access to the enclosure. Specialized security wrenches
are required to open the pin-in Allen-type tamper-resistant screws. Certain models of
indoor ONTs cannot be opened.
1.8 Rogue ONT defense
Fault or error conditions on a single ONT may disrupt the PON for other ONTs on
the same PON. Figure 1-2 shows some possible failure conditions.
Figure 1-2 Rogue ONT failure conditions
The following conditions on a single ONT may affect other ONTs using the same
PON:
• an ONT continuously sends light up the fiber because a laser is stuck on, which
may render the PON unusable
• two ONTs with the same serial number prevents correct ranging of both ONTs
18997
ISAM
LT
serial # 123abc
serial # 123abc
X
X
X
1) Watching timer
to ensure laser is
not stuck on or
no laser until
ONT s/w is ready
3) Bandwidth map
CRC failure
ONT deactivates
ONT
ONT
ONT
Increasing
becdown
counters?
2)
2) If 2 ONTS report
identical serial #s,
both ONTS are disabled
X
PON
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