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answer
within
a
designated
time.
The
incoming
call
record
will
not
be
displayed
in
the
Call
History.
No
Ans.
CFwd
Off
Code
Disable
Server
No
Ans.
CFwd
as
described
above.
Ban
Anonymous
On
Code
Ban
Anonymous
On
–
When
this
function
is
enabled,
the
server
will
disallow
the
phone
to
make
anonymous
calls.
Ban
Anonymous
Off
Code
Allow
Anonymous
Calling
function
described
above.
In
other
words
“Anonymous”
will
be
transmitted
for
Caller
ID.
Keep
Alive
Type
Specifies
the
NAT
keep
alive
type.
If
SIP
Option
is
selected,
the
phone
will
send
SIP
Option
sip
messages
to
the
server
every
NAT
Keep
Alive
Period.
The
server
will
then
respond
with
200
OK.
If
UDP
is
selected,
the
phone
will
send
a
UDP
message
to
the
server
every
NAT
Keep
Alive
Period.
Keep
Alive
Interval
Set
the
NAT
Keep
Alive
Interval.
Default
is
60
seconds
User
Agent
Set
SIP
User
Agent
value.
DTMF
SIP
INFO
Mode
You
can
chose
Send
10/11
or
Send
*/#
DTMF
Type
DTMF
sending
mode.
There
are
four
modes:
In
‐
band
RFC2833
SIP_INFO
AUTO
Different
VoIP
Service
providers
may
require
different
modes.
Local
port
SIP
port.
Default
is
5060.
Ring
type
Set
ring
tone.
There
are
9
standard
options
and
3
user
options.
Enable
Rport
Enable/Disable
support
for
NAT
traversal
via
RFC3581
(Rport).
Enable
PRACK
Enable
or
disable
SIP
PRACK
function.
Default
is
OFF.
It
is
suggested
this
be
used.
Enable
Long
Contact
Allow
more
parameters
in
contact
field
per
RFC
3840
Convert
URI
Converts
#
to
%23
when
sending
URI
information.
Dial
Without
Registered
Allow
outgoing
calls
without
registration.
Ban
Anonymous
Call
Refuse
Anonymous
Calls
Enable
DNS
SRV
Enables
use
of
DNS
SRV
records
Enable
Missed
Call
Log
If
enabled,
the
phone
will
save
missed
calls
into
the
call
history
record.
Server
Type
Configures
phone
for
unique
requirements
of
selected
server.
RFC
Protocol
Edition
Select
SIP
protocol
version
RFC3261
or
RFC2543.
Default
is
RFC3261.
Used
for
servers
which
only
support
RFC2543.
Transport
Protocol
Set
transport
protocol
TCP,
UDP
or
TLS.
Anonymous
Call
Edition
Set
privacy
support
RFC3323,
RFC3325
or
none
Keep
Authentication
Enable
/disable
registration
with
authentication.
It
will
use
the
last
authentication
field
which
passed
authentication
by
server.
This
will
decrease
the
load
on
the
server
if
enabled.
Ans.
With
a
Single
Codec
If
enabled
phone
will
respond
to
incoming
calls
with
only
one
codec.
Auto
TCP
Force
the
use
of
TCP
protocol
to
guarantee
usability
of
transport
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