Draytek Vigor2920 Series User Manual page 250

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.
Available settings are explained as follows:
Item
Region
Vigor2920 Series User's Guide
Description
Select the proper region which you are located. The common
settings of Caller ID Type, Dial tone, Ringing tone, Busy
tone and Congestion tone will be shown automatically on the
page. If you cannot find out a suitable one, please choose User
Defined and fill out the corresponding values for dial tone,
ringing tone, busy tone, congestion tone by yourself for VoIP
phone.
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