Technical Information - BT RESPONSE 5 User Manual

Technical information

Official approval
The Response 5 is tested and approved for
connection to the UK telecommunications
network, provided that it is used in accordance
with the guidelines in this booklet.
You may connect it to
• direct exchange lines;
• extensions with new plug and socket;
arrangements provided with these direct
exchange lines;
• compatible PBXs.
You may not connect it
• to shared service (party) lines;
• as an extension to a payphone.
This product is designed for UK use only.
Using it overseas may violate local laws.
19
Ringer Equivalence Number (REN)
If you connect too many telephones or other
devices to your telephone line, they may not ring
correctly. To work out how many telephones and
devices can be connected to your line, add
together all the RENs of all the apparatus you
wish to connect. If this total exceeds 4, they may
not ring or operate correctly.
The REN of your Response 5 and the majority of
telephones in the UK (unless otherwise marked)
is 1.
If you are connecting your Response 5
to a PBX
Your Response 5 is only approved for use with
compatible PBXs. For a list of suitable PBXs,
telephone BT on Freefone 0800 800 154. If you
do not have a compatible PBX, the Response 5
cannot be guaranteed to operate correctly under
every possible condition of connection.
Safety advice
• Don't install the Response 5 near a sink, bath
or shower. Electrical appliances can cause
serious injury if used when you are wet or
standing in water.
• Don't install the Response 5 where the various
leads can be tripped over or walked on. This
may cause injury or damage to the leads and
your Response 5.