Quick
Installation
Guide
X-50
38
Glossary
of
Terms
Bridge
–
A
Cable
or
DSL
modem/gateway
is
required
to
identify
a
specific
location
on
their
network.
Some
ISP
units
incorporate
a
router
so
that
the
user
does
not
have
to
purchase
another
device,
while
others
use
a
unit
that
has
no
routing
capability,
and
requires
the
user
to
supply
a
router.
When
using
remote
workers
or
joining
a
voice
network
the
ISP
units
must
be
set
as
a
bridge,
and
the
X
‐
50
system
is
used
at
the
router.
Default
Gateway
–
The
default
gateway,
usually
seen
as
an
IP
Address,
is
the
location
used
for
endpoints
to
access
the
Internet,
sometimes
called
the
“Doorway
to
the
Internet”.
If
the
default
gateway
is
not
entered
or
entered
incorrectly,
endpoints
will
have
no
access
to
the
Internet.
DNS
–
A
Domain
Name
System
is
the
“Phone
Book”
for
the
Internet.
It
translates
“Human
Relatable”
names
such
as
www.xbluenetworks.com
into
the
numeric
IP
Address.
The
DNS
can
be
a
local
or
remote
server,
and
it
is
a
essential
part
of
today’s
Internet.
(DHCP)
Dynamic
Host
Configuration
Protocol
–
A
dynamic
IP
address
is
assigned
by
a
DHCP
server,
such
as
a
router
or
network
file
server.
Each
time
a
network
device
is
powered
on
it
is
“leased”
(issued)
an
IP
Address
which
has
a
scheduled
expiration
time.
Once
the
lease
expires
the
address
may
be
released
to
the
same
device
or
another
device.
FXO
‐
Foreign
Exchange
Office
‐
is
where
a
standard
telephone
line
is
connected
and
requires
telephone
line
signaling
interface
for
standard
analog
telephone
lines
also
known
as
“POTS”,
Plain
Old
Telephone
Service.
When
the
telephone
line
is
taken
off
hook,
the
FXO
signals
the
telephone
line
provider
by
closing
the
“loop
relay”,
which
signals
the
telephone
line
provider
that
it
is
off
hook
and
should
receive
dial
tone.
FXS
‐
Foreign
Exchange
Station
‐
is
where
a
standard
Analog
or
Single
Line
Telephone
is
connected
to
the
system.
The
system
provides
talk
battery,
dial
tone,
generates
ring
voltage
and
generates
DTMF
Tones
for
the
telephone
line
provider
to
process
and
make
calls.
Gateway
–
A
Gateway,
sometimes
called
a
Media
Gateway,
is
the
device
that
joins
dispirit
ne
works;
similar
to
a
MUX,
taking
a
T1
and
converting
it
to
a
standard
Loop
‐
Start
CO
Line.
Intranet
–
An
Intranet
is
a
private
computer
network
that
an
Internet
Protocol
backbone.
This
could
be
considered
a
private
version
of
the
Internet.
Internet
–
The
Internet
is
a
series
of
interconnected
computers
and
computer
networks
that
transmit
and
receives
data
using
a
packet
switching
protocol
known
as
Internet
Protocol.
The
Internet
is
generically
known
as
the
“World
Wide
Web”.
IGW
–
Internet
Gateway
–
A
gateway
joins
two
or
more
disparate
networks,
such
as
an
intranet
(LAN)
from
the
Internet
(WAN),
or
when
separating
a
normal
LAN
from
wireless
guests.
Generally,
a
gateway
will
have
at
least
one
each
WAN
and
LAN
port.
