3.2.5 Resistibility requirements compliance
The ONT equipment complies with the requirements of ITU Recommendation K.21 for resistibility of
telecommunication equipment installed in customer premises to over voltage and over currents.
3.3 Laser safety guidelines
Only qualified service personnel who are extremely familiar with laser radiation hazards should
install or remove the fiber optic cables and units in this system.
Observe the following warnings when you perform installation, operations, and maintenance tasks
on the ONT equipment.
DANGER
Hazard
There may be invisible laser radiation at the fiber optic cable when the cable is removed from the
connector. Avoid direct exposure to beam.
Observe the following danger for a laser hazard. Eyes can be damaged when they are exposed to
a laser beam. Take necessary precautions before you plug in the optical modules.
DANGER
Hazard
Possibility of equipment damage. Risk of eye damage by laser radiation.
Per CDRH 21 CFR 10.40.10 (h) (1) (iv) distributors of Class 1 laser products, such as Nokia ONTs
shall leave the following Laser Safety cautions with the end user.
a) “Class 1 Laser Product”
Figure 3-2 Sample laser product label showing CDRH 21 CFR compliance
ANSI ONT safety guidelines
Laser safety guidelines
7368 ISAM ONT
Draft Draft
August 2020
Issue 4 33
Nokia – Proprietary and Confidential
Use pursuant to applicable agreements
3FE-48293-ACAA-TCZZA
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