Example, Pattern – CounterPath X-Lite 4 for Mac User Guide User Manual
Page 52
CounterPath Corporation
48
•
Pattern: the pattern that will be matched. One or more patterns. Each pattern is separated by a | pipe. The
pipe is optional after the last pattern. Each pattern is implicitly numbered, starting from 1.
•
Match; Transformation: A pair that identifies the pattern number to compare with the input, and the
transformation to perform on the input when a match is obtained. The transformation is optional (meaning
that if there is no transformation for a pattern, then the input that matches this pattern is not transformed).
One or more pairs.
“match=” is a literal. “n” identifies the pattern. “transformation=” is replaced by a keyword, see below.
“value” is replaced by a value.
Spaces are allowed only in the <value> items.
Example
\a\a.T|xxxxxxxxxx;match=1;prestrip=2;match=2;pre=8;
where:
•
\a\a.T
is the first pattern.
•
xxxxxxxxxx;
is the second pattern.
•
match=1;prestrip=2;
is the first match-transformation pair.
•
match=2;pre=8;
is the second match-transformation pair.
Pattern
Valid Content
The content for a pattern follows the digit map rules of RFC 2705, supplemented by the rules for regular
expressions. Where there is an overlap between the digit map and regular expression rules, the digit map rules
apply. For this reason, there are some special cases, included in the table below.
The following table describes the most common elements. All regular expression elements are supported.
Remember that dial plans are applied after the input has been cleaned up!
Element
Origin
Description
|
Regular
expression rules
Pipe character, used to separate patterns.
0 1 2 3 4 5 6 7 8 9 Literals
Literal digits, used as is.
# * a to z
Literals
Literal characters, used as is. Special cases:
• The literal x character is represented by \x.
• The literal t character is represented by \t.
x
Digit map rules
Wildcard for any single digit, 0 to 9.
\a
Regular
expression rules
Wildcard for any single alphanumeric character.
[digit-digit]
Regular
expression rules
A digit within the specified range.
[character-
character]
Regular
expression rules
A character within the specified range.
[digit1, digit2,
digit3]
Regular
expression rules
One of the characters in the collection.