Voice Quality And Infrastructure; Service (Customer Care) - Gigaset C460 IP Manual

Appendix
You cannot be reached for calls from the
Internet.
¥
There is no entry for your phone in your
router's routing table. Check the settings
for the
NAT refresh time
¥
Your phone is not registered with the SIP
service.
¥
You have entered the wrong user ID or an
incorrect domain (page 47).

Voice quality and infrastructure

With your Gigaset C460 IP you have the
possibility of making calls with good voice
quality via VoIP.
However, your phone's performance with
VoIP – and therefore the voice quality –
also depends on the properties of the
entire infrastructure.
The following VoIP provider components
are just some of the things that can influ-
ence performance:
u
Router
u
DSLAM
u
DSL transmission line and speed
u
Connection paths over the Internet
u
If necessary, other applications that
also use the DSL connection
In VoIP networks, the voice quality,
amongst other things, is influenced by the
"quality of service" (QoS). If the entire
infrastructure demonstrates QoS, voice
quality is better (fewer delays, less echo-
ing, less crackling etc.).
If, for example, the router does not have
QoS, the voice quality is not as good.
Please see the specialist documentation
for further information.
56
(page 49).

Service (Customer Care)

We offer you support that is fast and tai-
lored to your specific needs!
Our Online Support on the Internet:
www.siemens.com/gigasetcustomercare
This site can be accessed at any time
wherever you are. It will give you 24/7
support for all our products. It also pro-
vides interactive troubleshooting, a list of
FAQs and answers plus operating instruc-
tions for you to download. You will also
find frequently asked questions and
answers in the Questions and Answers
section in the appendix of this user guide.
For fast and dependable assistance with
any repairs or guarantee/warranty claims,
contact our Service Centres.
Service-Center:
0845 367 0812
You will be given personal advice about
our range of products on our Premium
Hotline:
0906 9500 430
Please have your record of receipt ready
when calling.
In some countries repair and replace
services are impossible where the
products are not sold through our
authorised dealers.
Please address any questions about the
DSL and cable connection to your Inter-
net provider.
0.75 £/minute