Maxwell 10 / en / A31008-N4001-R102-1-20 / web_configurator.fm / 22.01.2014
Telephony
23
Te
mplat
e
A4, V
e
rsion 1, 0
3.04.2012
Network provider data
The phone needs to know its public address in order to receive caller voice data.
The SIP protocol recognises the following options:
u
The phone requests the public address from a STUN server on the Internet (Simple Transversal of
UDP over NAT). STUN can only be used with asymmetric NATs and non-blocking firewalls.
u
The phone does not direct the connection request to the SIP proxy but to an outbound proxy on
the Internet that supplies the data packets along with the public address.
The STUN server and outbound proxy are used alternately to work around the NAT/firewall in the
router/gateway.
¤
Enter the required data for the STUN server
or
outbound proxy:
STUN enabled
Select
Yes
if you want your phone to use STUN as soon as it is used on a router with asymmetric
NAT.
STUN server address
Enter the DNS name or the IP address of the STUN server on the Internet. If you have selected
Yes
in the
STUN enabled
field, then you must complete this field.
STUN server port
Enter the number of the communication port on the STUN server.
The default port is 3478.
STUN refresh time (sec.)
Enter the time intervals (seconds) at which the phone should repeat the registration with the
STUN server. The repeat is required so that the phone's entry in the tables of the STUN server is
retained. The repeat will be carried out for all activated VoIP phone numbers. Ask your VoIP pro-
vider for the STUN refresh time if necessary. Default setting: 240 seconds.
NAT refresh time (sec.)
Specify the intervals at which you want the phone to update its entry in the NAT routing table.
Specify an interval in seconds that is a little shorter than the NAT session timeout. As a rule you
should not change the default value for the NAT update. Default setting: 20 seconds.
Outbound proxy mode
Specify when the outbound proxy should be used.
If you leave the
Outbound server address
field empty, the phone does not respond to the
selected mode and operates as if
Never
were selected.
Outbound server address
Enter the DNS name or the IP address of your provider's outbound proxy. With many providers,
the outbound proxy is identical to the SIP proxy.
Outbound proxy port
Enter the number of the communication port used by the outbound proxy. The default port is
5060.
Extended service platform PBX of service provider
¤
If your provider provides exteded PBX services enter the
Server address
,
User name
and the
Authenticaton password
.
¤
To change the password enter a new password an click on
OK
.
Always
All signalling and voice data sent by the phone is sent to the outbound proxy.
Never
The outbound proxy is not used.
