AT&T Release 2.0 Manuel D’Utilisation

Installing Telephones and Adjuncts

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If an MLX telephone or analog multiline telephone is in a different

building from the control unit, and is within 1000 ft (305 m) of the

control unit, connect the telephone to the control unit using two

in-range out-of-building (IROB) protectors.

Make sure you use an MLX-specific IROB for an MLX telephone,
and an analog multiline-specific IROB for an analog multiline
telephone.

See the documentation packaged with the IROB protector for
complete installation instructions.

If the single-line or tip/ring telephone is 1000 ft (305 m) or further

from the control unit, connect the telephone to the control unit
using an off-premises range extender (OPRE)

See the documentation packaged with the OPRE for complete
installation instructions.

For a system with up to 24 telephones, use direct wiring: plug in one end of a
DIW cable into the telephone jack on the control unit module and connect the
other end to the wall jack for the telephone.

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DIW cables

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Unicon plug

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cable ties

Connecting the Telephones to the Control Unit