beautypg.com

Nat refresh time – Siemens GIGASET C475 IP User Manual

Page 140

background image

139

Web configurator – configuring the telephone via a PC

Configuring telephone connections

Gigaset C470-475 IP / EN for IM-Ost / A31008-xxxx-xxxx-x-xxxx / web_server.fm / 18.12.07

Ve

rs

ion 2.

1,

08.0

1.20

07

STUN refresh time

Enter the time intervals at which the phone should repeat the registration with the

STUN server. The repeat is required so that the entry of the phone in the tables of the

STUN server is retained. The repeat will be carried out for all activated VoIP phone num-

bers.
Ask your VoIP provider for the

STUN refresh time

.

The default is 240 seconds.
If you enter 0 seconds, the registration will not be repeated periodically.

NAT refresh time

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 smaller than the NAT session timeout.
As a rule you should not change the preconfigured value for the

NAT refresh time

.

Outbound proxy mode

Specify when the outbound proxy should be used.

Always

All signalling and voice data sent by the phone is sent to the outbound proxy.

Auto

Data sent by the phone is only sent to the outbound proxy when the phone is connected

to a router with symmetric NAT or blocking firewall. If the phone is behind an asymmet-

ric NAT, the STUN server is used.
If you have set

STUN enabled

=

No

or have not entered a STUN server, the outbound proxy

is always used.

Never

The outbound proxy is not used.
If you do not make an entry in the

Outbound proxy

field, the phone behaves independ-

ently of the selected mode, as with

Never

.

Outbound proxy

Enter the (fully qualified) DNS name or the IP address of your provider's outbound proxy.

Outbound proxy port

Enter the number of the communication port used by the outbound proxy.
The default port is 5060.

Saving settings on the phone

¤

Click

Set

to save the changes.

The

Connections

list will be shown after saving (see Figure 3 on page 133).

If you want to reject the changes that have been made, click

Cancel

.

Clicking

Delete

will reset all the values back to their default settings. Fields with default set-

tings are empty.

Please note:

With many providers, the outbound proxy is identical to the SIP proxy.

This manual is related to the following products: