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2.1 Switch Panel Settings
Communication parameters are set with the switches in the switch panel. Unfasten two
screws to access the switches. Note that it is not necessary to turn off the IB-681 to
access the switches.
ON
2.1.1 Data rate
Set the data rate according to land line/network. The default setting is 64k (64 Kbps). 56k
is for USA ISDN circuit, for example. Data rate cannot be change after connecting with a
subscriber.
2.1.2 DIP switches
S
W
S
S
S
S
S
S
S
S
SW1: Automatic call mode
OFF: Call starts with reception of DTR signal from HSD terminal.
ON: Call starts when subscriber number from the HSD terminal is loaded on the TxD line.
2. SETTINGS
1 2 3 4
5 6 7 8
Figure 3 Switch panel
Table 1 DIP switch functions
N
. o
F
u
n
t c
o i
n
W
1
A
u
o t
m
a
c i t
c
l l a
W
2
T
r e
m
n i
a
i l
t n
r e
a f
c
A
u
o t
m
a
c i t
d
a
a t
W
3
a r
e t
s
w
c t i
h
n i
g
W
4
C
o
m
m
a
n
d
f
r o
m
t a
W
5
C
h
a
a r
c
e t
f r
r o
m
t a
W
6
N
t o
u
s
e
d
W
7
N
t o
u
s
e
d
W
8
N
t o
u
s
e
d
Data Rate
64K
56K
O
F
F
i D
e r
t c
c
l l a
A
e
R
S
4 -
4
9
R
N
O
Y
H
D
L
C
B
S
8
b
t i
n /
o
p
r a
y t i
7
3
: Factory setting
O
N
d
d
e r
s s
c
l l a
S
2 -
3
2
E
S
C
b
t i
o /
d
d
p
r a
y t i
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