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Technical information
Environment
Your Relate 1500 should be kept free from dust, moisture, high
temperature, sand, vibration and should not be left in direct
sunlight. Do not stand it on carpets or other surfaces which
generate fibres, or place it in locations which prevent the free
flow of air over its surfaces.
How many phones can you have?
Although you may have any number of sockets, it is important
to limit the number of phones and other items of apparatus
connected to the line by those sockets, to make sure that each
phone will ring.
Every phone or item of apparatus has a Ringer Equivalence
Number (REN). In most cases a standard line should provide
enough current for two or more telephones or items of
apparatus, if there are no more than 4 RENs.
Your Relate 1500 has an REN of 1. Any phone provided by BT
has an REN of 1 unless it says otherwise on the base. Even
where the number of telephones has been limited, there is no
guarantee that the different types of phone on the same line
will ring.
If the REN is more than 4, the phone may not ring. With
different phone types a phone may still not ring, even when the
REN is less than 4.
You must not connect more than 4 Caller Display products to
one line.
Connection information
• Your Relate 1500 may be connected to public networks in
the UK.
• It may be connected to switching systems that use tone
signalling with timed break recall. If you are in doubt contact
your switch supplier.
IMPORTANT: The Caller Display Service does not
function when connected to switching systems.
Warning
The phone is only designed to be use in a normal office or
domestic environment where the relative humidity is no more
than 60%. It should not be used in bathrooms or near water.
