Gigaset C530 IP Owner's Manual page 115

Configuring the phone via the Web configurator
Setting DTMF signalling for VoIP
You can change the settings for DTMF signalling in the DTMF over VoIP connections area on the
web page:
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Settings Telephony
DTMF signalling is required, for example, for querying and controlling certain network
mailboxes via digit codes or for remote operation of a local answer machine.
To send DTMF signals via VoIP you must first define how key codes should be converted into and
sent as DTMF signals: as audible information via the speech channel or as an "SIP Info" message.
Ask your VoIP provider which type of DTMF transmission it supports.
You can configure your telephone in such a way that it attempts with each call to set the most
suitable DTMF signalling for the current codec (Automatic).
Or you can explicitly define the type of DTMF signalling:
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Audio or RFC 2833 if DTMF signals are to be transmitted acoustically (in voice packets).
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SIP Info if DTMF signals are to be transmitted as code.
Notes
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The settings for DTMF signalling apply to all VoIP connections (VoIP accounts).
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DTMF signals cannot be transmitted in the audio path (Audio) on broadband
connections (the G.722 codec is used).
Configuring call transfer via VoIP
You can change the settings for call transfer in the Call Transfer area on the web page:
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Settings Telephony
You can connect an external call to one of your VoIP connections with a second external
participant (depending on the provider). You do this by establishing an external consultation
call to the second participant and pressing the R key on the handset once the second participant
has answered. The call is transferred.
You can expand or change the settings for call transfer as follows:
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You can activate call transfer by ending the call. The two external participants are connected
with one another when you press the End call key
the participants are terminated.
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You can activate direct call transfer. You can then transfer the call before the second
participant has answered.
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You can deactivate call transfer with the R key if you want to assign a different feature to the
R key (see below "Defining R key function for VoIP (hook flash)").
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Advanced VoIP Settings
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Advanced VoIP Settings
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on the handset. Your connections with