ii
Preface
Thank
you
for
choosing
Tenda!
Please
read
this
user
guide
before
you
start
with
4G680.
Conventions
The
typographical
elements
that
may
be
found
in
this
document
are
defined
as
follows.
Item
Presentation
Example
Cascading
menus
>
System
>
Live
Users
Parameter
and
value
Bold
Set
User
Name
to
Tom
.
Variable
Italic
Format:
XX
:
XX
:
XX
:
XX
:
XX
:
XX
UI
control
Bold
On
the
Policy
page,
click
the
OK
button.
Message
“
”
The
“Success”
message
appears.
The
symbols
that
may
be
found
in
this
document
are
defined
as
follows.
Symbol
Meaning
This
format
is
used
to
highlight
information
of
importance
or
special
interest.
Ignoring
this
type
of
note
may
result
in
ineffective
configurations,
loss
of
data
or
damage
to
device.
This
format
is
used
to
highlight
a
procedure
that
will
save
time
or
resources.
Acronyms
and
Abbreviations
Acronym
or
Abbreviation
Full
Spelling
APN
Access
Point
Name
DHCP
Dynamic
Host
Configuration
Protocol
DMZ
Demilitarized
Zone
DNS
Domain
Name
System
ISP
Internet
Service
Provider
L2TP
Layer
2
Tunneling
Protocol
LAN
Local
Area
Network