5432 – BT R123e – Edition 06 – 05.06.03
23
Technical information
How many telephones can you have?
All items of telephone equipment have
a Ringer Equivalence Number (REN),
which is used to calculate the number
of items which may be connected to any
one telephone line. Your Response 123e
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.
Switchboard compatibility
This product is intended for use within
the UK for connection to the public
telephone network and compatible
switchboards, which support tone
dialling and time break recall. If in
doubt please consult your service
provider.
BT accessories and
replacement items
For a full range of accessories and
replacement items for BT products, call
0870 240 5522 or visit
