Canon Cat Reference Manual page 70

On-Hook and Off-Hook
These
terms
are
useful
in
discussing
IPHONEI.
On-hook
means
that
the
line
is not
in we; off-hook
means
it is.
Hooft
refersto ahook
switch,which
the handset rests on
when the
phone
is hung
up.
The Cat
does
not have
a
literal
phone
receiver,
of
course.
It only
turns
an
intemal switch on
or
off.
The
telecommunication
sign
appears
on
the ruler
whenever the Cat's
line
is
off-hook.
Answering
If
the
Cat
is
on-hook, and
you use
[PHONE]
without
extending
the
highlight,
the Cat is taken
off-hook. The Cat
tries
to
make
a
connection by
looking for
a
carrier signal
and
sending
a
carrier signal. The
same
thing
happens
when
the Cat autoanswers.
While
the
Cat is
looking for
a
carrier
signal,
a
WAIT
sign
appears
on the
ruler.
The cursor stops
blinking until
the
connection is made or the carrier signal
timer runs out.
Pressing any
key while
the
WAIT
sign is on
will
cause
the
Cat to hang up.
The Cat tries to establish a
connection at 1200 baud
first,
then tries at 300 baud
ifit
is
unsuccessful. These are
the
two
most
common
rates
for telecommunications.
The
Cat
sounds
a confirm tone when
it
establishes
a
connection. The baud rate
appears
on the
ruler next to the
telecommunication sign.
If
you
are
having trouble
with
a
poor
telephone connection, use
[SETUP]
to
specify 300
baud, and then
try
again.
Hanging Up
If
the
Cat's modem
line
is
off-hook,
IPHONE]
puts
it
on-
hook. This is
how you
end
Cat-to-Cat or Cat-to-computer
communications. The
highlight
should not
be
extended.
[PHONE] is also used to hang up
after
a
phone call that lasts
less
time than
the
Cat's
carrier signal search.
After
dialing
a
number
with
[PHoNE], the Cat
looks for
a
carrier signal
for
a
time period specified
by
[SETUP].
If
you
hang up
before this time runs out,
then
lift
the handset,
you
will not
hear
a
dial tone.
Using
[PHONE] frees the
line
and
gives
you
a
dial
tone.
If
you
use
[PHONE]
when the Cat is off-hook and
the
highlight is
extended,
it
will
dial
any numbers
in
the
highlight,
even
though you may
already have
a
connection.
This enables you to
dial long
distance access codes.
Once
the Cat detects a carrier,
you can't dial
any more since
dialing would interfere
with
modem
communication.