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General information 23
How many telephones can I 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 BT Big Button 200 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
timed break recall. If in doubt, please consult your network service provider.
Switchboard external line access code
When connected to an internal switchboard, you may need to enter an access
code e.g. 9 to get an outside line. So that the switchboard has time to pick up an
outside line, you may also need to add a Pause after the access code. A Pause lasts
2.5 seconds.
To insert a pause
1. When storing a number in the memory, press the button in the place you
want a pause inserted.
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