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Connecting
the
DCM
212
C
Your
DCM
212
is
Bell
system
103
and
212A
compatible, connecting
to the
telephone
lines
via
a
modular
connector.
The RS-232C
input/out-
put of
the
Modem
interfaces directly
with the
RS-232C-equipped Tandy
computers.
Telephone connections
Please note that
each product connected
to
the telephone
line
places
a
certain
load
on
the
line.
We
designate
this
as
the
unit's
"Ringer Equiva-
lence
Number!'
When
using
more
than one product
on
the
line,
total
all
the ringer
equivalence
numbers.
If
they
total
more
than
5,
your
phone
may
not
ring.
In rural areas
a
total
of
3
may
impair
ringer operation.
To be
sure,
check with your
local
telephone
company.
The
registration
number
as well as ringer
equivalence
number
appears
on
the
bottom
of
the
unit.
The way
you
connect
the
DCM
212
to
a telephone depends
on
how
your
telephone
is
connected
to the
wall.
Single-line
1.
Remove
your
telephone's
plug
from
the
modular
wall
jack
and
in-
sert
it
in
the
PHONE
jack
on
the
rear
of
the
Modem.
2.
Plug
the
Modem's
WALL
JACK
phone
line
cord
into
the
modu-
lar
wall jack.
Figure
6.
Modular
Will Telephone Connection
75
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