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BT Synergy 3505 – Edition 4 – 11.11.03 – 5675
General information
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 other telephone line.
Your BT Synergy 3505 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.
Only use approved power supply, item code 005391 for base station or 003313 for
charger (only applicable if you have purchased a BT Synergy 3505 Multiple pack).
Only use approved AAA NiMH rechargeable batteries.
R&TTE
This product is intended for use within the UK for connection to the public telephone
network and compatible switchboards.
This equipment complies with the essential requirements for the Radio Equipment and
Telecommunications Terminal Equipment Directive 1999/5/EC.
5675 BT Synergy 3505 UG [4] 11/11/03 4:21 PM Page 68