Draytek 2800 Series

Vigor2800 Series User’s Guide

Enable Check this box to invoke this setting.

Prefix Number The phone number set here is used to add, strip, or replace the

OP number.

Mode None - No action.

Add - When you choose this mode, the OP number will be

added with the prefix number for calling out through the

specific VoIP interface.

Strip - When you choose this mode, the OP number will be

deleted by the prefix number for calling out through the

specific VoIP interface. Take the above picture (Prefix Table

Setup web page) as an example, the OP number of 886 will be

deleted completely for the prefix number is set with 886.

Replace - When you choose this mode, the OP number will be

replaced by the prefix number for calling out through the

specific VoIP interface. Take the above picture (Prefix Table

Setup web page) as an example, the OP number of 8863 will

be replaced completely by 03 for the prefix number is set with

03.

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.