Operation Manual

VoIP
11-9
Packet Size
The amount of data contained in a single packet. The default
value is 20 ms, which means the data packet will contain 20 ms
voice information.
DTMF InBand
With this selected the Vigor will send DTMF tones as audio
directly in the Voice stream when you press a key on the
keypad.
DTMF
OutBand
With OutBand selected the Vigor will capture the keypad
number pressed, transform it to a digital form and send to the
other side outside of the Voice stream; the receiver will generate
the tone according to the digital form it receives. This function is
very useful when network traffic congestion occurs to maintain
the accuracy of DTMF tones.
DTMF Payload
Type
The default value is 101, but can be anything from 96 to 127.
SIP INFO
Enable this option to let the SIP proxy send DTMF tones to the
dialed peer.
RTP
Specifies the start and end port for RTP stream. The default
values are 10050 and 15000 .