Draytek Vigor2920n User's Guide download pdf (Page 268)

Vigor2920 Series User’s Guide

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Also, you can specify each field for your necessity. It is

recommended for you to use the default settings for VoIP

communication.

Volume Gain Mic Gain (1-10)/Speaker Gain (1-10) - Adjust the volume of

microphone and speaker by entering number from 1- 10. The

larger of the number, the louder the volume is.

MISC Dial Tone Power Level - This setting is used to adjust the

loudness of the dial tone. The smaller the number is, the louder

the dial tone is. It is recommended for you to use the default

setting.

Ring Frequency - This setting is used to drive the frequency of

the ring tone. It is recommended for you to use the default

setting.

DTMF DTMF Mode – There are four DTMF modes for you to choose.

InBand - Choose this one then the Vigor will send the DTMF

tone as audio directly when you press the keypad on the phone

OutBand - Choose this one then the Vigor will capture the

keypad number you pressed and transform it to digital form

then send to the other side; the receiver will generate the tone

according to the digital form it receive. This function is very

useful when the network traffic congestion occurs and it still

can remain the accuracy of DTMF tone.

SIP INFO- Choose this one then the Vigor will capture the

DTMF tone and transfer it into SIP form. Then it will be sent to

the remote end with SIP message.

Payload Type (rfc2833) - Choose a number from 96 to 127,

the default value was 101. This setting is available for the

OutBand (RFC2833) mode.

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Draytek Vigor2920n User's Guide Page 268