Decor 500 ~ 4th Edition ~ 15th July ’03 ~ 5096

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 Decor 500 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.

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BT BT DECOR, 500 manual Technical information, Switchboard compatibility, How many telephones can you have?