Siemens GIGASET C475 IP - Manual (Page 149)

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Web configurator – configuring the telephone via a PC
Configuring call forwarding via VoIP
Gigaset C470-475 IP / EN for IM-Ost / A31008-xxxx-xxxx-x-xxxx / web_server.fm / 18.12.07
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Configuring call forwarding via VoIP
If you are toggling calls via VoIP connections, you can connect the two external callers (pro-
vider-dependent). You can configure settings for this type of call forwarding.
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Open the following Web page: Settings
¢
Telephony
¢
Advanced Settings .
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Configure the following settings in the Call Transfer area for call forwarding via VoIP:
Transfer Call by On-Hook
If you activate Yes , the external parties you are toggling between will be connected
when you press the end call key a. Your connections with the parties will be termi-
nated.
To learn how to forward a call when you have activated
No, please see page 48.
Preferred Refer To
Define the protocol (the contents of the "Refer To" information) that should be used with
preference when forwarding calls:
Target’s contact info
This protocol is recommended for "closed" networks (internal company and business
networks).
Original URL
This protocol is recommended when the base station is connected to the Internet via a
router with NAT.
Automatic Refer To
If you activate Yes , the base station will attempt to determine the best protocol automat-
ically.
If the base station cannot determine the best protocol, it will use the protocol defined
in Preferred Refer To .
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Now click Set to save your settings.
Setting area code predialling
On the base station, save the complete code (with international code) for the area in which
you are using the phone.
For VoIP calls you must generally always dial the area code – even for local calls. You can
save the need to dial the area code for local calls by setting your phone to prefix this code
for all VoIP calls made in the same local area.
For calls made via VoIP, the area code entered is then prefixed to all numbers that do not
start with 0 – even when dialling numbers from the directory and other lists. Exceptions:
Numbers for which you have defined dialling plans (page 149).
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Open the following Web page: Settings
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Telephony
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Dialling Plans .
Configure the following settings in the Area Codes area:
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From the Country list, select the country in which you are using your phone. This way
the country code and the prefix of the area code are automatically set (in International
Prefix / Area Code and Local Prefix fields).