Draytek Vigor 2910 User Manual page 132

This page will differ for different models. Below is a sample page obtained from Vigor
2910VGi. The selection of Loop through and Backup Phone Number is only available for
2910VGi model.
Enable
Phone Number
Display Name
SIP URL
Loop through
Backup Phone Number
126
Click this to enable this entry.
The speed-dial number of this index. This can be any number
you choose, using digits 0-9 and * .
The Caller-ID that you want to be displayed on your friend's
screen. This let your friend can easily know who's calling
without memorizing lots of SIP URL Address.
Enter your friend's SIP Address
For the model of Vigor 2910VGi, the selection should be as
the following:
When the VoIP phone is obstructs or the Internet breaks down
for some reasons, the backup phone will be dialed out to
replace the VoIP phone number. At this time, the phone call
will be changed from VoIP phone into PSTN call according to
the loop through direction chosen. Note that, during the phone
switch, the blare of phone will appear for a short time. And
when the VoIP phone is switched into the PSTN phone, the
telecom co. might charge you for the connection fee. Please
type in backup phone number (PSTN number) for this VoIP
phone setting.
Vigor2910 Series User's Guide