Draytek VigorIPPBX 2820 Series, User Manual

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VigorIPPBX 2820 Series User’s Guide 312
Single Codec – If the box is checked, only the selected
Codec will be applied.
Packet Size -The amount of data contained in a single
packet. The default value is 20 ms, which means the data
packet will contain 20 ms voice information.
Voice Active Detector - This function can detect if the
voice on both sides is active or not. If not, the router will
do something to save the bandwidth for other using. Click
On to invoke this function; click off to close the function.
In addition, you can press the Advanced button to configure tone settings, volume gain,
MISC and DTMF mode. Advanced setting is provided for fitting the telecommunication
custom for the local area of the router installed. Wrong tone settings might cause
inconvenience for users. To set the sound pattern of the phone set, simply choose a proper
region to let the system find out the preset tone settings and caller ID type automatically. Or
you can adjust tone settings manually if you choose User Defined. TOn1, TOff1, TOn2 and
TOff2 mean the cadence of the tone pattern. TOn1 and TOn2 represent sound-on; TOff1 and
TOff2 represent the sound-off.