6
DLM4000 User Guide
PN 161-09997-003A
Feb 2005
Communications Description
Communication with the DLM4000 is possible in a multipoint configuration, but only through dial-up configuration. Per
diagram 1, it is possible to setup a dial-up polling operation. The link is a full-duplex link, which can be set up to 19200 bps.
Leased line mode is another option that can be used when dial-up lines are not available or desired, (see diagram 3). This
link is strictly a point-to-point full-duplex link. On unloaded lines, this link may be up to 20 miles. When the DLM4000
modems are being used on a loaded telephone company leased line the distance is unlimited. No ATDT commands are
required to connect. When the DLM4000 modems are set for leased line operation and powered up, they will connect and
achieve carrier. The communications rate may be set up to 19,200 bps.
DLM4000 LED Descriptions
DATA-LINC GROUP
(425) 882-2206
DLM4000
C T R
y
d
a
e
R
m
e
d
o
M
)
R
M
(
n
o
d
e
n
r
u
t
s
i
m
e
d
o
m
e
h
t
n
e
h
w
s
t
h
g
i
L
y
d
a
e
R
l
a
n
i
m
r
e
T
a
t
a
D
)
R
T
(
c
n
i
L
-
a
t
a
D
e
h
T
.
d
e
t
c
e
t
e
d
s
i
l
a
n
g
i
s
R
T
D
n
e
h
w
s
e
h
s
a
l
F
.
R
T
D
s
a
d
e
t
o
n
e
D
.
R
T
D
e
r
o
n
g
i
o
t
s
i
tl
u
a
f
e
d
p
u
o
r
G
t
c
e
t
e
D
r
e
i
r
r
a
C
)
D
C
(
.
d
e
t
c
e
t
e
d
s
i
r
e
ir
r
a
c
s
'
m
e
d
o
m
e
t
o
m
e
r
e
h
t
n
e
h
w
s
t
h
g
i
L
D
X
T
r
o
a
t
a
D
d
n
e
S
)
D
S
(
r
o
m
e
d
o
m
e
t
o
m
e
r
e
h
t
o
t
a
t
a
d
g
n
i
d
n
e
s
s
i
m
e
d
o
m
e
h
t
n
e
h
w
s
e
h
s
a
l
F
.t
n
e
m
p
i
u
q
e
E
T
D
l
a
c
o
l
e
h
t
m
o
r
f
a
t
a
d
g
n
i
v
i
e
c
e
r
n
e
h
w
D
X
R
r
o
a
t
a
D
e
v
i
e
c
e
R
)
D
R
(
.t
n
e
m
p
i
u
q
e
E
T
D
l
a
c
o
l
m
o
r
f
a
t
a
d
g
n
i
v
i
e
c
e
r
s
i
m
e
d
o
m
e
h
t
n
e
h
w
s
e
h
s
a
l
F
d
e
e
p
S
h
g
i
H
)
S
H
(
.
d
e
e
p
s
w
o
l
n
e
h
w
ff
O
.
e
v
o
b
a
r
o
s
p
b
0
0
4
2
s
i
d
e
e
p
s
e
n
il
n
e
h
w
s
t
h
g
i
L
r
e
w
s
n
A
-
o
t
u
A
)
A
A
(
g
n
i
m
o
c
n
i
n
e
h
w
s
e
h
s
a
l
F
.r
e
w
s
n
a
-
o
t
u
a
r
o
f
t
e
s
s
i
m
e
d
o
m
e
h
t
n
e
h
w
s
t
h
g
i
L
.
d
e
t
c
e
t
e
d
s
i
g
n
ir
k
o
o
H
-
f
f
O
)
H
O
(
e
h
w
ff
O
.
)
k
o
o
h
-
ff
o
(
e
n
il
e
n
o
h
p
e
l
e
t
e
h
t
g
n
i
s
u
s
i
m
e
d
o
m
e
h
t
n
e
h
w
s
t
h
g
i
L
.
)
k
o
o
h
-
n
o
(
e
n
il
e
h
t
g
n
i
s
u
t
o
n
s
i
m
e
d
o
m
e
h
t
(MR) (TR) (CD) (SD) (RD) (HS) (AA) (OH)
