Draytek Vigor2710 Series User Manual page 256

Available settings are explained as follows:
Item
Region
Vigor2710 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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