User's Manual

Table Of Contents
115
Setting the phone with the PC
Gigaset A580 IP / US English / A31008-xxxx-xxxx-x-xxxx / web_server.fm / 24.04.2009
Version 8, 03.09.2008
Activating/deactivating the STUN server of the Gigaset.net connection
The Gigaset.net connection is preconfigured in your phone. The Gigaset.net
uses a STUN server as standard. In the sent data packets, Gigaset.net replaces
the private IP address of your phone with its public IP address.
If you operate your phone behind a router with symmetrical NAT, STUN cannot
be used. Otherwise, when making Gigaset.net calls you will not be able to hear
the caller.
In this case, deactivate STUN for the Gigaset.net connection.
¤ Open the following Web page:
Settings ¢ Telephony ¢ Connections.
¤ Select
Edit in the Gigaset.net area.
STUN enabled
Click No to deactivate STUN.
Select Yes if you want your phone to use STUN.
¤ Select Set to save the changes.
Optimizing voice quality for VoIP connections
You can make general and connection-specific settings to improve the voice
quality for VoIP telephony.
¤ Open the following Web page:
Settings ¢ Telephony ¢ Audio.
The voice quality for VoIP connections is mainly determined by the voice codec
used for transferring the data and the available bandwidth of your DSL con-
nection.
In the case of the voice codec, the voice data is digitalized (coded/decoded) and
compressed. A "better" codec (better voice quality) means more data needs to
be transferred, i.e. perfect voice data transfer requires a DSL connection with a
larger bandwidth.
The following voice codecs are supported by your phone:
G.722 Excellent voice quality. The broadband speech codec G.722 works at the same
bit rate as G.711 (64 kbit/s per speech connection) but with a higher sampling
rate. This allows higher frequencies to be played back. The speech tone is there-
fore clearer and better than for the other codecs (High Definition Sound Per-
formance).
Gigaset S67H, S68H and SL37H are examples of HDSP-compatible handsets.
Please note
If you do not use your Gigaset.net connection for six weeks, it is automatically
deactivated. You cannot be reached for calls from Gigaset.net.
The connection is reactivated:
u As soon as you start a search in the Gigaset.net directory (£
Page 48) or
u Make a call via Gigaset.net, i.e. dial a number ending in #9 (two attempts
may be necessary) or
u Activate the connection via the Web configurator as described above.