Cisco CX-AIP-TM Installation And Configuration Manual page 14

AIP Installation Prerequisites
Telephone Wiring
Use the following guidelines when working with any equipment that is connected to telephone
wiring or to other network cabling:
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Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. Electromagnetic interference (EMI)
shielding, connectors, and a handle are integral components of the carrier. Although the metal carrier
helps to protect the board from ESD, use a preventive antistatic strap whenever handling an interface
processor. Handle the carriers by the handles and the carrier edges only; never touch the boards or
connector pins.
Following are guidelines for preventing ESD damage:
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Caution
should be between 1 and 10 megohms.
14 Asynchronous Transfer Mode Interface Processor (AIP) Installation and Configuration
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.
Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact;
connect the equipment end of the strap to a captive installation screw on an installed power
supply.
When installing an interface processor, use the ejector levers to properly seat the bus connectors
in the backplane, then tighten both captive installation screws. These screws prevent accidental
removal, provide proper grounding for the system, and help ensure that the bus connectors are
seated in the backplane.
When removing an interface processor, use the handle to pull the interface processor out slowly
while keeping your other hand underneath the carrier to guide it straight out of the slot.
Handle carriers by the handles and carrier edges only; avoid touching the board or connectors.
Place a removed interface processor board-side-up on an antistatic surface or in a static shielding
bag. If you plan to return the component to the factory, immediately place it in a static shielding
bag.
Avoid contact between the interface processor and clothing. The wrist strap only protects the
board from ESD voltages on the body; ESD voltages on clothing can still cause damage.
Never attempt to remove an interface processor printed circuit board from the metal interface
processor carrier.
For safety, periodically check the resistance value of the antistatic strap. The measurement