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Codec Settings
• Preferred Codec Type: Since different voice codecs have different compression ratios, so the
sound quality and occupied bandwidths will also be different. It is recommended that you use the
default provided (G.729) because it is popular and will provide better sound quality.
• Jitter Buffer: Adjusts the jitter to receive a packet. If the jitter range is too wide, it will delay voice
transmission.
• Silence Detection/Suppression: If one side of a connection is not speaking, the system will stop
sending voice data (packet) to decrease bandwidth usage.
• Echo Cancellation: Prevents voice quality caused by echo interference.
• Packet Interval: Defines how long the VoIP gateway sends a RTP packet to the other party of a
VoIP conversation. The smaller the value, the more bandwidth usage. The larger the value, the more
voice delay.
• Approximate Bandwidth Require: The bandwidth required varies with codec format and packet
time.
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V400 Series VoIP Gateway User Guide
YML832 Rev1
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