Siemens gigaset c475 ip User Manual

Making cost-effective calls

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

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Using the Internet (VoIP) is the preferred cost-effective way of making calls. 
You can also use your phone's cost control function for calls to fixed line or mobile phone 

networks. Open accounts with various VoIP providers who offer favourable rates for calls 

to other networks. In the phone configuration, define the best VoIP connections (account), 

e.g. for specific regional, national and mobile network prefixes, to be used when calls are 

made (

, page 149). Or define the VoIP connection to be used when dialling the 

number (dialling with line suffix, page 32). 

If you are using your fixed line network to make a call, choose a network provider that 

offers particularly favourable rates (call-by-call). You can manage call-by-call numbers in 

the call-by-call list

You can prefix a network provider's number ("chaining") to numbers dialled via a fixed line 

network
C

Open call-by-call list.

s

Select entry (call-by-call number).

Press the display key.

Select and press 

.

~ / s Enter number or dial number from the directory (page 53).
c

Briefly press/press and hold the talk key so that the number is dialled via the 

fixed line network. Both numbers are dialled.

The duration of each call appears in the display for calls made via a fixed line network and 

VoIP

u

during the conversation,

u

until about three seconds after the call has ended if you do not replace the handset in 

the charging cradle.

You can define appropriate rules for Call-by-Call numbers (page 149) to enable the linked number to 

be dialled via the fixed line network. Or you can attach the line suffix #0 (for the fixed line network) 

to the numbers. 

The actual duration of the call can vary from that shown by a few seconds.