Yealink SIP-T21 E2 User Manual page 78

User Guide for the SIP-T21(P) E2 IP Phone
Numeric ranges are allowed within the brackets: Digit "-" Digit.
- Example:
"[5-7]" would match the number"5", "6"or "7".
The square brackets "[]" 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 parentheses "( )" 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", "773", etc.
The "$" should be followed by the sequence number of a parenthesis.
The "$" plus the sequence number means the whole character or
characters placed in the parenthesis. The number directs to the right
parenthesis when there are more than one. 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".
You can configure one or more replace rules (up to 100) to remove the specified string
and replace it with another string. You can configure a pattern with wildcards (refer to
the expression syntax in the table above), so that any string that matches the pattern
will be replaced. This feature is convenient for you to dial out a long number. For
example, a replace rule is configured as "Prefix: 1" and "Replace: 1234". When trying to
dial out the number "1234", you just need to enter "1" on the phone and then press the
Send soft key.
To add a replace rule via web user interface:
1. Click on Settings->Dial Plan->Replace Rule.
2. Enter the string (e.g., 1) in the Prefix field.
3. Enter the string (e.g., 1234) in the Replace field.
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