Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
57
system
starts
the
failback
process.
S
5:
When
failback
process
starts,
system
terminates
the
current
WAN
connection
via
Failover
WAN
interface.
S
6:
System
changes
the
data
routing
path
back
to
the
primary
WAN
interface
as
same
state
as
at
the
beginning
of
system
normal
operation.
Cellular
Network
WAN
‐
1:
ADSL
ISP
DSLAM
Gateway
WAN
‐
2:
3G/4G
②
Failover
①
Disconnected
③
Start Connecting
Cellular
Network
WAN
‐
1:
ADSL
ISP
DSLAM
Gateway
WAN
‐
2:
3G/4G
⑥
Failback
④
Connection Back
⑤
Terminate Connection
Failover
Failback
Seamless
Failover
Scenario:
As
another
example,
all
parameter
configuration
for
WAN
‐
1
and
WAN
‐
2
is
same
as
above
example
except
the
"Seamless"
box
is
checked
as
bellow
(in
red
color).
Configuration
Path
[Physical
Interface]
‐
[Interface
Configuration
(WAN
‐
n)],
n=1,
2
Interface
Name
WAN
‐
1
WAN
‐
2
Physical
Interface
ADSL
USB
3G/4G
Operation
Mode
Always
on
Failover
WAN
‐
1
■
Seamless
Line
Speed
2Mbps
/
22Mbps
5Mbps
/
21Mbps
When
the
“Seamless”
enable
checkbox
is
activated,
it
can
allow
the
Failover
interface
to
be
connected
continuously
after
system
booting
up.
The
Failover
interface
just
keeps
connecting
but
without
data
transfer.
The
purpose
is
to
aim
at
the
shortening
of
switch
time
during
failover
process.
So,
when
primary
connection
is
disconnected,
failover
interface
will
take
over
the
data
