Vigor2930 Series User’s Guide
168
SIP server.
OP Number 
The front number you type here is the first part of the account 
number that you want to execute special function (according 
to the chosen mode) by using the prefix number. 
Min Len 
Set the minimal length of the dial number for applying the 
prefix number settings. Take the above picture (Prefix Table 
Setup web page) as an example, if the dial number is between 
7 and 9, that number can apply the prefix number settings 
here. 
Max Len 
Set the maximum length of the dial number for applying the 
prefix number settings. 
Interface 
Choose the one that you want to enable the prefix number 
settings from the saved SIP accounts. Please set up one SIP 
account first to make this interface available. 
Call Barring 
Call barring is used to block phone calls that are not welcomed. 
Click any index number to display the dial plan setup page.