User manual

Http://www.hybertone.com HT-822P VoIP FXS+PSTN Gateway
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A） RTP Ports
RTP (Real Time Protocol) Port is the target transport address for the RTP audio stream to
be sent to.
B） Packet Length
it means the time of single network packet sent out . The default time is 20ms.
C） Jitter Buffer
D） Media Qos
RTP TOS is a service field in UDP IP packets carrying a RTP data. Enter RTP TOS if your
network supports DiffServ and can prioritize the packets to maintain voice quality.
4.4.4 Codec Preference
The Codec Preference is inside the media setting menu. Click on “Codec Preference” in