VoIP
ATA
with
router
function
User
Manual
22
3.2
LAN
Interface
These
are
the
IP
settings
of
the
LAN
(Local
Area
Network)
interface
for
the
device.
These
settings
may
be
referred
to
as
"private
settings".
You
may
change
the
LAN
IP
address
if
needed.
The
LAN
IP
address
is
private
to
your
internal
network
and
cannot
be
seen
on
the
Internet.
The
default
IP
address
is
192.168.1.1
with
a
subnet
mask
of
255.255.255.0.
LAN
is
a
network
of
computers
or
other
devices
that
are
in
relatively
close
range
of
each
other.
For
example,
devices
in
a
home
or
office
building
would
be
considered
part
of
a
local
area
network.
□
LAN
IP
Address:
Assign
the
IP
address
of
LAN
server,
default
is
192.168.1.1
□
Subnet
Mask:
Select
a
subnet
mask
from
the
pull
‐
down
menu,
default
is
255.255.255.0.
DHCP
Server
Setting
DHCP
stands
for
Dynamic
Host
Control
Protocol.
The
DHCP
server
gives
out
IP
addresses
when
a
device
is
starting
up
and
request
an
IP
address
to
be
logged
on
to
the
network.
The
device
must
be
set
as
a
DHCP
client
to
"Obtain
the
IP
address
automatically".
By
default,
the
DHCP
Server
is
enabled
in
the
unit.
The
DHCP
address
pool
contains
the
range
of
the
IP
address
that
will
automatically
be
assigned
to
the
clients
on
the
network.
DHCP
client
computers
connected
to
the
unit
will
have
their
information
displayed
in
the
DHCP
Client
List
table.
The
table
will
show
the
Type,
Host
Name,
IP
Address,
MAC
Address,
Description,
and
Expired
Time
of
the
DHCP
lease
for
each
client
computer.
DHCP
Server
is
a
useful
tool
that
automates
the
assignment
of
IP
addresses
to
numbers
of
computers
in
your
network.
The
server
maintains
a
pool
of
IP
addresses
that
you
use
to
create
scopes.
(A
DHCP
scope
is
a
collection
of
IP
addresses
and
TCP/IP
configuration
parameters
that
are
available
for
DHCP
clients
to
lease.)
Then,
the
server
automatically
allocates
these
IP
addresses
and
related
TCP/IP
configuration
settings
to
DHCP
‐
enabled
clients
in
the
network.
The
DHCP
Server
leases
the
IP
addresses
to
clients
for
a
period
that
you
specify
when
you
create
a
scope.
A
lease
becomes
inactive
when
it
expires.
Through
the
DHCP
Server,
you
can
reserve
specific
IP
addresses
permanently
for
hardware
devices
that
must
have
a
static
IP
address
(e.g.,
a
DNS
Server).
An
advantage
of
using
DHCP
is
that
the
service
assigns
addresses
dynamically.
The
DHCP
Server
returns
addresses
that
are
no
longer
in
use
to
the
IP
addresses
pool
so
that
the
server
can
reallocate
them
to
other
machines
in
the
network.
If
you
disable
this
DHCP,
you
would
have
to
manually
configure
IP
for
new
computers,
keep
track
of
IP
addresses
so
that
you
could
reassign
addresses
that
clients
aren't
using,
and
reconfigure
computers
that
you
move
from
one
subnet
to
another.
The
DHCP
Static
MAP
table
lists
all
MAC
and
IP
address
which
are
active
now.
When
you
enable
the
DHCP
server,