Chapter
2
–
Installing
the
Modem
5.
Before
touching
anything
inside
the
modem
case,
discharge
any
static
in
your
body
by
touching
a
piece
of
grounded
metal
such
as
the
computer
chassis.
Electrostatic
discharge
(ESD)
is
the
release
of
stored
static
electricity
that
can
damage
electrical
circuitry
or
components.
Static
electricity
is
often
stored
in
your
body,
and
discharged
when
you
come
in
contact
with
an
object
of
a
different
potential.
6.
Perform
the
procedure
below
described
in
this
section
only
at
an
ESD
workstation
using
an
antistatic
wrist
strap.
If
such
a
station
is
not
available,
you
can
provide
some
ESD
protection
by
wearing
an
antistatic
wrist
strap
and
attaching
it
to
a
metal
ground
screw
(lug).
7.
Remove
the
top
part
of
the
modem
case.
Location
of
the
Jumpers
Note:
The
Speaker
Mode
jumper
is
for
a
modem
with
the
voice
option
Changing
the
Dial
Up/Leased
Line
Jumper
As
shipped
from
the
factory,
your
modem
is
configured
for
normal
dial
‐
up
operation.
That
is,
the
modem
must
dial
a
phone
number
to
connect
to
another
modem.
To
use
the
modem
on
a
leased
line,
you
must
change
jumper
J2
to
select
leased
line
operation,
and
J3
to
select
whether
it
will
be
the
originating
or
the
answering
modem.
If
dial
‐
up
operation
is
selected,
J3
has
no
effect.
See
Chapter
3
for
additional
leased
line
information.
●
The
factory
default
is
the
answer
position.
This
makes
the
modem
the
answering
modem
on
the
leased
line.
●
To
use
the
modem
on
a
leased
line,
move
the
J2
jumper
plug
from
the
default
dial
‐
up
position
to
the
leased
line
position.
Multi
‐
Tech
Systems,
Inc.
MT9234ZBA
‐
Series
User
Guide
9
