Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
113
modify
an
existed
one.
When
"Add"
or
"Edit"
button
is
applied
the
"Special
AP
Rule
Configuration"
window
will
appear
to
let
you
define
a
application
rule.
The
parameters
include
the
trigger
port,
the
allowed
incoming
ports,
the
integrated
time
schedule
rule,
and
the
rule
activation.
Special
AP
List
This
feature
allows
you
to
request
the
gateway
open
a
pre
‐
defined
set
range
service
ports
for
incoming
packets
to
pass
through
once
the
trigger
port
is
toggled
in
the
gateway
by
the
Intranet
packets.
As
shown
in
following
diagram,
one
defined
special
application
rule
is
that
the
trigger
port
is
pa
and
the
activated
ports
are
pb
and
pc
once
the
pa
port
is
toggled
at
LAN
interface
of
gateway.
Scenario
Application
Timing
When
local
user
wants
to
run
an
application
to
access
the
server
in
the
Internet
and
the
application
need
more
than
one
connection
session
with
different
service
ports
to
finish
its
function.
You
can
define
one
special
application
rule
for
it.
The
rule
can
be
integrated
with
one
schedule
rule.
That
is,
the
special
application
rule
can
be
activated
only
at
the
pre
‐
defined
schedule.
Scenario
Description
Local
user
runs
an
application
to
access
the
Internet
server
by
a
trigger
packet
with
the
dedicated
destination
port.
Gateway
opens
more
service
ports
for
incoming
packets
to
pass
through
the
gateway
into
the
Intranet
from
the
Internet
if
the
application
requires.
Parameter
Setup
Example
Following
table
lists
the
parameter
configuration
as
an
example
for
the
gateway
in
above
diagram
