TB200/400 User Manual
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not always possible for the system to negotiate
endpoint-to-endpoint media routing.
3) Codec
We can choose the allowed codec in TB200/400, a codec is a compression or
decompression algorithm that used in the transmission of voice packets over a
network or the Internet. For more information about codec, you can refer to this
page:
http://en.wikipedia.org/wiki/List_of_codecs
Figure 4-13 Codec
Note:
if you want to use codec G729, we recommend buying a license key and
input it here.
4) QoS
QoS (Quality of Service) is a major issue in VoIP implementations. The issue is
how to guarantee that packet traffic for a voice or other media connection will not
be delayed or dropped due interference from other lower priority traffic. When the
network capacity is insufficient, QoS could provide priority to users by setting the
value.
Figure 4-14 QoS
Note:
it’s recommended that you configure the QoS in your router or switch
instead of TB200/400 side.
5) T.38
Settings on this page is for the purpose of improving receiving and sending T.38
FAX.