Siemens Gigaset C450IP 사용자 설명서

Gigaset C450 IP / Greek eng / A31008-M1713-T151-3-8U19 / appendix.fm / 24.9.07

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si

on 4, 16.

09.20

05

With your Gigaset C450 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. 

You may need the service information of 

your phone (base station and handset) for 

Customer Services. 

Precondition: You are conducting an 

external call. The connection has been 

established for at least 8 sec.

¢

Confirm selection with 

. 

The following information is displayed: 

 Serial number of the base station (RFPI)

 Serial number of your handset (IPUI)

 Informs the service employees of the 

base station settings (in hex diagram), 

e.g. the number of registered handsets, 

repeater mode. The last 4 digits indicate 

the number of operating hours (hexadeci-

mal). 

 Variant, version of the firmware 

(digits 3 to 5).

 Gigaset.net number of your phone. 

With this number you can call a service 

employee over the Internet without need-

ing to be registered with a VoIP provider. 

This means that he/she can test online 

connections and VoIP telephony irrespec-

tive of the VoIP provider.

In the handset idle status:

¤

Press 

. 

¤

Enter * # 0 6 #. 

The following information is displayed via 

the handset: 

 Serial number (IPUI)

 Number of operating hours 

 Variant, version of handset software

You should observe the following for good 

voice quality:
– When making calls using VoIP, avoid per-

forming other Internet activities (e.g. surf-

ing the net). 

– Irrespective of the codec used and the net-

work capacity utilisation, note that voice 

delays can occur. Therefore, allow your 

VoIP calling partner to finish speaking. Do 

not interrupt him or her.