M2M
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
75
Start
FQDN
Query
(Target1,
Target2)
Success?
N
=
N+1
Connection
is
Broken
ICMP
Check
(Target1,
Target2)
N
<
“Fail
Threshold”
“DNS
Query”
“ICMP
Checking”
No,
or
“Check
Timeout”
occurs
Yes
No
Enough
traffic
existed?
No
Yes
“Loading
Check”
enable?
Yes
No
Reply
time
>
“Latency
Threshold”
Yes
No
Sleep
for
“Check
Interval”
Sleep
for
“Check
Interval”
Yes
N
=
0
Checking
Method
End
Try
to
reconnect
N:
the
count
of
fails
Connection
Control
There
are
three
ways
for
connection
control,
“Auto
‐
reconnect
(Always
on)”,
“Dial
‐
on
‐
demand”
and
“Manually”.
Auto
‐
reconnect
(Always
on):
This
gateway
will
establish
Internet
connection
automatically
once
it
has
been
booted
up,
and
try
to
reconnect
once
the
connection
is
down.
It’s
recommended
to
choose
this
scheme
if
for
mission
critical
applications
to
ensure
full
‐
time
Internet
connection.
Dial
‐
on
‐
demand:
This
gateway
won’t
start
to
establish
Internet
connection
until
local
data
is
going
to
be
sent
to
WAN
side.
After
normal
data
transferring
between
LAN
and
WAN
sides,
this
gateway
will
disconnect
WAN
connection
if
idle
time
reaches
value
of
Maximum
Idle
Time.
