Yealink T27G

Call Features
275
Replace Rule Configuration
Dial Now Configuration
Area Code Configuration
Block Out Configuration
Example: Adding Replace Rules Using a Replace Rule File
Basic Regular Expression Syntax for Four Patterns
You need to know the following basic regular expression syntax when creating old dial plan:
Regular
expression
Description
.
The dot “.” can be used as a placeholder or multiple placeholders for
any string. Example:
“12.” would match “123”, “1234”, “12345”, “12abc”, and so on.
x
The “x” can be used as a placeholder for any character. Example:
“12x” would match “121”, “122”, “123”, “12a”, and so on.
-
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”, and so on.
$
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”.