Fax - D-Link DVG-4088S User Manual

Jitter Buffer: Adjusts the jitter to receive a packet. If the jitter range is too wide, it will
delay voice transmission.
Silence Suppression: If one side of a connection is not speaking, the system will stop
sending voice data (package) to decrease bandwidth usage.
Echo Canceling: Prevents poor telecommunication quality caused by echo interference.
Packet Time: Defines how long the DVG-3016S send a RTP packet-voice packet- to the
other side. 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.

FAX

T.38: The T.38 protocol is used for better and faster facsimile transmission. When this
function is enabled, the following fax and voice parameter settings will be disabled, so it
is recommended to enable this function to gain better fax quality. When this function is
enabled, please select UDP, TCP, or AUTO. If selecting TCP and some routers cannot
use the Fax function, please select UDP instead.
Enable High Quality: To ensure better quality.
If T.38 is disabled, then the system will use T.30 as the protocol for fax transmission.
The parameter settings are the same as for voice transmission. However, enabling the
fax function will consume more network resources and will affect transmission quality.
FAX Detect sensitivity：used to adjust the sensitivity of detect a phone call whether be
FAX or not.
This is used as a standard to determine whether or not to hang up the phone. The system will
hang up the phone automatically to avoid keeping the line engaged if the detected volume is
below the Silence Detection Threshold and the time exceeds the Drop Silent Call Timeout.
Silence Detection Threshold: Set the volume as a standard.
Drop Silent Call Timeout: Set the time to hang up the phone.
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