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Appendix
C
Multi-line
The
DCM
212
Modem
can be used with a
multi-line telephone,
but
you
may
need
a
multi-line
adapter
(43-271),
a
hardware
modification
to
the
Modem,
or both.
If
you
use a
multi-line
adapter
only,
the
HOLD
button
on an
exten-
sion
phone
can
interfere
with
communication
if
someone
presses
it.
To
avoid
this
problem, have a
qualified
Radio Shack
service techni-
cian
modify
the
DCM
212.
Radio Shack
has
several
adapters that
can be used
for
connecting
the
DCM
212
to multi-line telephones.
Contact your Radio
Shack
Com-
puter
Center or
store
for
details.
Computer
connections
The
DCM
212
Modem
uses the
RS-232C
standard
serial
interface ca-
ble to
connect
to
your computer.
The
table
below
provides the cable
requirement
for
Tandy
computers.
If
more
detailed
information
is
need-
ed, refer to
your computer's
owner's
manual.
Table
17.
Modem-to
-Computer
Cables
Computer
Cable Catalog
No.
Model
1
26-1145
Model
III/4/4D/4P/12/16B/16B
HD
26-1408
DT-1/DT-100/100
Tandy
102/200/600/1000/1200/1200HD/2000/6000
26-1408
Tandy 3000
26-1399
Model
11/16
26-4403
1.
Plug
the appropriate
end
of the
interface
cable into the
RS-232C
standard
DB-25
jack
on
the
rear
of
the
Modem.
2.
Plug
the other
end
of
the cable into the
computer's
DB-25
jack.
For
the following
computers,
you'll
need
option boards
that
contain
an RS-232C
interface to
connect your
DCM
212.
Contact your Radio
Shack Computer
Center
for
details.
77
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