Region
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, and congestion tone by yourself for
VoIP phone.
Vigor2820 Series User's Guide
192