BT BIG Button + - Manual (Page 12)

BIG Button + ~ 4th Edition ~ 15th April ’02 ~ 4380
11
2 Plug your BIG Button + into the
telephone socket
If you do not have a modern style socket, call BT on
Freefone 0800 800 150 and ask for a BT engineer to come
and fit the correct socket.
This may be a chargeable service.
Battery low indicator
The batteries power the Message Waiting Indicator lamp.
The normal flash rate when messages are waiting is every
2 seconds. When the batteries are running low and a message
is waiting, the flash rate slows to once every 6 seconds.