Battery safety
Only use the rechargeable batteries supplied with the
handset.
DON’T use non-rechargeable batteries —
they may burst, causing damage
.
Connection
and conditions
for use
You can connect your
e
820 to a direct exchange line
(DEL) — a line connected to a local exchange, with its
own phone number; to an extension socket connected
to a DEL; or to an extension on an approved compatible
PBX. Do not connect the
e
820 as an extension
to a payphone.
The
ringer equivalence numbers (RENs)
of all
instruments (phones, fax machines, etc.) connected to
an exchange line
must not add up to more than 4
—
otherwise, one or more of them may not ring and/or
answer calls correctly. The
e
820 has a REN of 1, and
most other telephones have a REN of 1 unless marked
otherwise.
Read these notes first
5
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