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Chapter 5
Telephony
To have more configuration on telephony settings
Click
Advanced
under
Advanced Settings
to configure more telephony settings.
Bound Interface:
Bound Interface decides where to send/receive the VoIP traffic. An
easy way to select the interface is to check the location of the SIP (Session Initiation
Protocol) server. If it locates somewhere on the internet then select
Any_WAN
. If it is on
the local network, select
LAN
.
Locale Selection:
Select a country where you are located. The modem router is
embedded with some default parameters according to different countries such as ring
tones. The default country is Australia.
DSCP for SIP/RTP:
DSCP (Differentiated Services Code Point) is the first 6 bits in the ToS
byte. DSCP marking allows users to assign specific application traffic to be executed in
priority by the next Router based on the DSCP value. Select DSCP for the SIP (Session
Initiation Protocol) and RTP (Real-time Transport Protocol) respectively. If you are
unsure, please always keep the default value.
DTMF Relay Setting:
DTMF is Dual Tone Multi Frequency. Options available are SIP-Info,
RFC2833, and In-band. If you are unsure which one to choose, please always keep the
default value.
•
SIP INFO:
If it is selected, the modem router will capture the DTMF tone and transfer it
into SIP form. Then it will be sent to the remote end with SIP message.
•
RFC2833:
If it is selected, the modem router will capture the keypad number you
pressed and transfer it into digital form then send to the other side; the receiver will
generate the tone according to the digital form it receives. This function is very useful
