advanced_phone_user_guide

General information
66
Technical details
How many phones 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 Advanced Phone 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 dierent telephone types
there is no guarantee of ringing,
even when the REN is less than 4.
Any additional handsets and
chargers that you register have a
REN of 0.
Connecting to a switchboard
Switchboard compatibility
This telephone may be connected
to most types of switchboard,
however in the event of any
diculties, consult your
switchboard Service Provider.
Recall (R)
Recall is used when connected to
certain switchboards/PBXs and some
BT Calling Features, or those services
available via your network provider.
The Advanced Phone supports timed
break recall but not earth
loop recall.