Draytek 2910 - Manual (Page 142)

Vigor2910 Series User’s Guide 136
Also, you can specify each field for your necessity. It is
recommended for you to use the default settings for VoIP
communication.
Caller ID Type There are several standards provided here for displaying the
caller ID on the panel of the telephone set. Choose the one
that is suitable for the phone set according to the area of the
router installed. If you don’t know what standard that the
phone set supports, please use the default setting.
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 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