Soundwin VoIP Voice Gateway User Manual page 50

[Network Advance]
Item
Smart-QoS:
Bandwidth control:
G.723/G.729 Bandwidth:
IP TOS:
Description
If this function is enabled, when VoIP call is occurred, the other
data will be automatically reduced traffic which across the internet
in order to guarantee the voice bandwidth.
You can configure your bandwidth what the Max byte of download
and upload of ADSL modem rate.
Setting G.723 / G.729 voice compression size. Quality and Packet
size can adjust by you want.
Some Router support TOS(Type of Service), when you enable the
TOS function, the router will process those packets firstly.(default
is disable)
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