BT Decor 400 - Manual (Page 9)

9
Technical
information
Your Decor 400 should
be kept free of dust,
moisture, high
temperature, vibration
and should not be
exposed to direct
sunlight. It should not
be used in bathrooms
or near water.
Environment
All items of telephone
equipment have a
Ringer Equivalence
Number (REN), which
is used to calculate the
number of items that
may be connected to
any one telephone line.
Your Decor 400 has a
REN of 1. A total REN
of 4 is allowed.If the
total REN of 4 is
exceeded, the
telephones may not
ring. With different
telephone types there
is no guarantee of
ringing, even when the
REN is less than 4.
How many phones
can you have?
Your Decor 400 is only
designed to be operated
in a normal office or
domestic environment
where the relative humidity
does not exceed 60%.
Warning
Your Decor 400 may
be connected to public
networks in the
United Kingdom.
It may also be
connected to switching
systems that use tone
(MF) signalling, with
timed break recall. If
in doubt, your switch
supplier or maintainer
should be able to offer
help. Advice on
connection to BT
switching systems can
be obtained by dialling
BT Freefone
0800 800 152.
Generally your Decor
400 can be connected
to any switchboard
where a simple
modern telephone can
be used to make and
receive calls.
Connection
information
T
echnical information