VoiceGear SkyBridge User Manual - page 74
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Image 62: Basic settings using a simple regular expression
Filter expressions are based on regular expression grammar which can be used to define any pattern to match
against the caller ID of an incoming call. To learn more about regular expression grammar we recommend you to
read the official on‐line Python Regular Expressions reference at
http://docs.python.org/lib/module‐re.html
.
In the example above we have defined two filter expressions using characters and special pattern symbols as
explained in the Python Regular Expressions reference. According to this filter rule all incoming calls from Skype
accounts starting with the name “john” or ending with the name “tom” will be denied.
Once you are satisfied with your call filter settings click on the “Save” button to add the new filter rule to the call
filter table as shown below. It’s recommended to provide a detailed description for each call filter in order to be
able to easily identify the rule in this table.
Image 63: Call filter list
When a new filter rule is added to the Call Filter table, it is disabled by default (you will see the rule entry being
grayed out). You can enable the rule by clicking on the green checkmark icon on the right of each entry. You can
also disable the rule by clicking the green checkmark icon again. When a rule is disabled you will see the table
entry grayed out again. To remove an existing expression click on the “Delete” action button on the right of each
filter rule.
Please Note:
Order of call filter rules defined in the call filter table is essential: filters are processed in the order they appear
in the list. You can order existing call filters by dragging and dropping entries up and down in the call filter
table.