Netcomm 4-port and 8-port Gateways Gateway Series Manuel d'utilisateur télécharger pdf (Page 40)

40 SmartVoice Gateway(s) User Guide

YML832 Rev2

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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Netcomm 4-port and 8-port Gateways Gateway Series Manuel d'utilisateur Page 40