AT&T 8403 Betriebsanweisung PDF herunterladen (Seite 2)

IMPORTANT SAFETY WARNINGS

When this product is located in a separate building from the telephone communications

system, a line current protector MUST be installed at the entry/exit points of ALL buildings

through which the line passes. However, note that there is a difference between 4-wire and

2-wire installations.

The following are the ONLY acceptable devices for use in a 4-wire installation: (note that

two protectors are needed at each installation point)

AT&T 4-type protectors

ITW LINX LP-type protectors

For 2-wire installations, the following is recommended: (only one protector is needed at

each installation point)

AT&T 4-type protectors

ITW LINX LP-type protectors

However, if the above two protectors are not used, the following is acceptable in a 2-wire

installation:

AT&T 3BIC (Carbon block) or AT&T 3BEW (gas tube) protectors

NOTE:

The 3BIC and 3BEW protectors can be used ONLY for 2-wire installations. They

CANNOT be used for 4-wire installations.

CAUTION: This voice terminal is NOT for residential use. It is for business

systems applications ONLY. Use in a residential environment could result in

an electrical short circuit when the telephone wiring is set up to provide other

applications, for example, for appliance control or power transformers. The

AC power used in these applications may create a safety hazard by placing a

direct short circuit across the telephone wiring.

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AT&T 8403 Betriebsanweisung Seite 2