BT 6170 - Manual (Page 16)

BT Prelude 20 Headset – Edition 2 – 14.06.04 – 6170
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 other telephone
line. Your BT Prelude phone has a REN of 1. A total REN of 4 is allowed. If the total REN
of 4 is exceeded, the telephone may not ring.
With different telephone types there is not guarantee of ringing, even when the REN is
less than 4.
Technical information
For your records
Date of purchase:
Place of purchase:
Serial number:
For guarantee purposes proof
of purchase is required so please
keep your receipt.
BT accessories and replacement items
For a full range of accessories and
replacement items for BT products please
call 0870 240 5522,
or visit:
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6170 BT Prelude 20 UG [2] 14/6/04 3:34 pm Page 16