48
Gigaset DX800A all in one / USA EN / A31008-N3100-WEB-1-7643 / web_server.fm / 26.8.11
V
e
rsion 6, 21.0
8
.2008
Telephony – Advanced Settings:
Setting DTMF signalling for VoIP
DTMF signalling is required, for example, for querying and controlling certain
network mailboxes via digit codes or for remote operation of the local answering
machine.
To send DTMF signals via VoIP you must first define how key codes should be con-
verted into and sent as DTMF signals: as audible information via the speech chan-
nel or as a "SIP Info" message.
Ask your VoIP provider which type of DTMF transmission it supports.
¤
Open the
Settings
¢
Telephony
¢
Advanced Settings
Web page.
DTMF over VoIP connections area
Make the required settings for sending DTMF signals.
You have the following options:
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You can activate the
Automatic
option. All other options for the
Send settings
are deactivated. For each call, the base attempts to set the suitable DTMF signal-
ling type for the current codec.
¤
You can deactivate the
Automatic
option and explicitly define the type of DTMF
signalling:
¤
Activate
Audio
or
RFC 2833
if DTMF signals are to be transmitted acoustically
(in voice packets).
¤
Activate
SIP Info
if DTMF signals are to be transmitted as code.
¤
Select
Set
to save your settings.
Please note
u
The settings for DTMF signalling apply to all VoIP connections (VoIP
accounts).
u
DTMF signals cannot be transmitted in the audio path (
Audio
) on broadband
connections (the G.722 codec is used).