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4
Introduction
Your Duet 450 Clock Telephone is
designed for ease of use and made to
the high standards set by BT
We thank you for
making the right
choice and expect
that your machine
will give you many
years of quality
service.
Please read
the instructions
carefully before
use, and keep this
User Guide for
future reference.
Date of purchase:
Place of purchase:
Serial number:
(on base of answering
machine)
Purchase price:
(for warranty purposes,
proof of purchase is
required, so please keep
your receipt)
For your records