Siemens gigaset c475 ip User Manual

Web configurator – configuring the telephone via a PC
Optimising voice quality for VoIP 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

Default settings for the codecs used are stored in your phone: one setting optimised for 

narrow and one for wide bandwidths. 

¤

Activate one of the options 

 / 

 if 

you wish to accept a default setting for all VoIP connections. The settings are shown 

in the 

area and cannot be changed. 

¤

Activate the 

 option if you wish to select and set connection-spe-

cific voice codecs yourself (see "Area: Settings for Connections"). 

In this area you can make specific settings for each of your VoIP phone numbers. 
You can make the following settings for each VoIP phone number configured on your 

phone:

Depending on the VoIP provider, it is possible that the received voice/earpiece volume is 

too low or too high, so that adjusting the volume via the handset is not adequate. 
Specify whether the received volume range is too high or too low. The following options 

are available: 

 

Voice/earpiece volume is too high. Activate this option to reduce the volume by 6 dB. 

 

The voice/earpiece volume does not need to be raised/lowered. 

 

Voice/earpiece volume is too low. Activate this option to increase the volume by 6 dB. 

Precondition: The 

 option is activated for the 

 in the 

 area.

Select the voice codecs your phone is to use, and specify the order in which the codecs 

are to be suggested when a VoIP connection is established via this VoIP phone number. 

¤

Apply the voice codecs that your phone is to suggest with outgoing calls into the 

 list. 

To do this, in the 

 list click the voice codec that you want to apply (you 

can mark several entries using the Shift key or the Ctrl key). Click 

. 

¤

Move the voice codecs that you do not want the phone to use into the 

 

list.

Also, select the voice codecs in the 

 list (see above) and click 

. 

Please note: If only one VoIP connection is permitted, the following VoIP network services are no 

longer available:
– Call waiting 

Call waiting is not displayed during a call via VoIP 

– External consultation call from a VoIP call 
– Toggling and initiating a conference call via VoIP