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When
you
are
on
a
phone
call
and
an
arriving
guest
initiates
a
door
call,
you
normally
get
a
call
waiting
tone
at
your
handset
to
announce
the
visitor.
But
if
you
do
not
intend
to
be
interrupted
in
any
ways
from
your
phone
call,
not
even
to
tell
somebody
to
get
the
door,
that's
when
you
need
something
like
a
door
chime
announcer
in
addition
to
call
waiting!
On
these
occasions,
the
chime
will
ring
as
long
as
the
user
on
the
line
does
not
take
the
door
call,
for
a
total
of
4
times.
If
you
wish
to
have
distinctive
door
chime
on
these
occasions
for
door
identification
by
off-line
users
so
they
can
get
the
right
door,
see
Ultimatoll
Economy
systems.
more
>>
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