Administrator’s Guide for SIP-T46G IP Phone
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to search and manipulate text based on patterns.
Regular expression can be used to define dial plan for the IP phones. Dial plan is a
string of characters that governs the way for the IP phones processing the inputs
received from the IP phone keypads. The IP phones support the following dial plan
features:
Replace Rule
Dial-now
Area Code
Block Out
The priority of matching dial plan is: Dial-now>Replace Rule>Area Code>Block Out.
You need to know the following basic regular expression syntax when creating dial
plan:
The dot ―.‖ can be used as a placeholder or multiple placeholders for
any string. Example:
―12.‖ would match ―123‖, ―1234‖, ―12345‖, ―12abc‖, etc.
The ―x‖ can be used as a placeholder for any character. Example:
―12x‖ would match ―121‖, ―122‖, ―123‖, ―12a‖, etc.
The dash ―-‖ can be used to match a range of characters within the
brackets. Example:
―[5-7]‖ would match the number ―5‖, ‖6‖ or ‖7‖.
The comma ―,‖ can be used as a separator within the bracket.
Example:
―[2,5,8]‖ would match the number ‖2‖, ―5‖ or ―8‖.
The square bracket "[]" can be used as a placeholder for a single
character which matches any of a set of characters. Example:
"91[5-7]1234"would match ―9151234‖, ―9161234‖, ―9171234‖.
The parenthesis "( )" can be used to group together patterns, for
instance, to logically combine two or more patterns. Example:
"([1-9])([2-7])3" would match ―923‖, ―153‖, ―673‖, etc.
The ―$‖ followed by the sequence number of a parenthesis means
the characters placed in the parenthesis. The sequence number
stands for the corresponding parenthesis. Example:
A replace rule configuration, Prefix: "001(xxx)45(xx)", Replace:
"9001$145$2". When you dial out "0012354599" on your phone, the IP
phone will replace the number with "90012354599". ―$1‖ means 3
digits in the first parenthesis, that is, ―235‖. ―$2‖ means 2 digits in the
second parenthesis, that is, ―99‖.
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