C June 2004 4200-A2-GN21-30
13. The equipment is intended for installation in a maximum 149° F (65° C) ambient temperature, in an environment
that is free of dust and dirt.
14. Do not physically stack more than eight (8) 42xx units high. Physical stability has not been evaluated for stacking
higher than eight units, and any configuration greater than eight may result in an unstable (tip-over) condition.
Ensure that the four (4) rubber feet supplied with the product have been installed on the bottom of each unit prior to
stacking any 42xx units on top of one another.
15. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:
— Never install telephone wiring during a lightning storm.
— Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
— Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface.
— Use caution when installing or modifying telephone lines.
— Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of
electric shock from lightning.
— Do not use the telephone to report a gas leak in the vicinity of the leak.
16. If the equipment has an internal POTS splitter, then to be compliant with the Bellcore NEBS requirements
GR-1089-CORE, sections 4.2.2 (Current Limiting Protectors) and 4.5.11 (Current Limiting Protector Tests), current
limiting protectors shall be used on the DSL lines entering the facility. Also, to comply with GR-1089-CORE
radiated emissions criteria, ferrite chokes must be installed as described in the installation instructions.
17. When installed in the final configuration, the product must comply with the applicable Safety Standards and
regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.
