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Business
Cellular
Modem
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
30
3G/4G
Connection
Common
Configuration
Item
Value
setting
Description
Connection
Control
By
default
Auto
‐
reconnect
(Always
on)
is
selected
When
Auto
‐
reconnect
(Always
on)
is
selected,
it
means
it
will
keep
the
connection
on
all
the
time.
When
Connect
‐
on
‐
demand
is
selected,
it
means
the
connection
will
be
established
only
when
detecting
data
traffic.
When
Connect
Manually
is
selected,
it
means
you
need
to
click
the
Connect
button
to
dial
up
the
connection
manually.
Please
go
to
Status
>
Network
Status
for
details.
Note
:
This
field
is
available
only
when
Basic
Network
>
Cellular
Modem
>
Physical
Interface
>
Operation
Mode
is
selected
to
Always
on
.
Time
Schedule
1.
A
Must
filled
setting
2.
By
default
(0)
Always
is
selected
When
(0)
Always
is
selected,
it
means
this
WAN
is
under
operation
all
the
time.
Once
you
have
set
other
schedule
rules,
there
will
be
other
options
to
select.
Please
go
to
System
>
Scheduling
for
details.
MTU
1.
A
Must
filled
setting
2.
By
default
0
is
filled
‐
in
3.
String
format
:
integer
Specify
the
MTU
(Maximum
Transmission
Unit)
for
the
3G/4G
connection.
Value
Range
:
512
~
1500,
but
0
is
for
auto.
IP
Pass
‐
through
1.
The
box
is
checked
by
default
2.
String
format
for
Fixed
MAC
:
MAC
address,
e.g.
00:50:18:aa:bb:cc
When
Enable
box
is
checked,
it
means
the
device
works
like
a
cellular
bridge,
ant
it
will
directly
assign
the
WAN
IP
to
the
first
connected
local
LAN
client.
However,
when
an
optional
Fixed
MAC
is
filled
‐
in
a
non
‐
zero
value,
it
means
only
the
client
with
this
MAC
address
can
get
the
WAN
IP
address.
Note
:
The
checkbox
can’t
be
unchecked
for
the
cellular
modem.
Network
Monitoring
1. An optional setting
2.
Enabled
by
default
When the
Network
Monitoring
feature
is
enabled,
the
gateway will
use
DNS
Query
or
ICMP
to
periodically
check
Internet
connection
–
connected
or
disconnected.
Choose
either
DNS
Query
or
ICMP
Checking
to
detect
WAN
link.
With
DNS
Query,
the
system
checks
the
connection
by
sending
DNS
Query
packets
to
the
destination
specified
in
Target
1
and
Target
2.
With
ICMP
Checking,
the
system
will
check
connection
by
sending
ICMP
request
packets
to
the
specified
destination.
Loading
Check
Enable
Loading
Check
allows
the
router
to
ignore
unreturned
DNS
Queries
or
ICMP
requests
when
WAN
bandwidth
is
fully
occupied.
This
is
to
prevent
false
link
‐
down
status.
Check
Interval
defines
the
transmitting
interval
between
two
DNS
Query
or
ICMP
checking
packets.
Value
Range
:
2
~
30
seconds.
Check
Timeout
defines
the
timeout
of
each
DNS
query/ICMP.
Value
Range
:
2
~
5
seconds.
Latency
Threshold
defines
the
threshold
of
responding
time.