Introduction To Number Substitution - HP FlexNetwork MSR Series Configuration Manual

Metacharacter
Dot (.)
Hyphen (-)
Brackets ([ ])
Parentheses (( ))
Exclamation point (!)
Plus sign (+)
Percent sign (%)
The sub-expression (one digit or digit string) before a control character such as exclamation point (!),
plus sign (+), and percent sign (%) can appear for the corresponding times indicated by the control
character. For example, (100)+ can match 100, 100100, 100100100, and so on. Once any number of
them is matched, the match is considered an exact match. In the longest match mode, the voice
gateway will ignore subsequent digits dialed by the subscriber after an exact match. (For the case
that the gateway needs to wait for subscribers to continue dialing after an exact match, see the
description for T mode.)
The characters (\) and (|) are mainly used in regular expressions and cannot be used as common
characters. The character (\) is an escape character. If you want a control character to represent
itself, you need to add the escape character (\) before it. For example, (\+) represents the character
(+) itself because (+) is a control character in regular expressions. The character (|) means that the
current character (string) is the character (string) on either the left or the right. For example,
0860108888|T means that the current character string is either 0860108888 or T.
T mode—The character T in the match-template match-string means that the voice gateway should
wait for more digits until the number exceeds the maximum length or the dial timer expires.
If a number starts with the plus sign (+), note the following when you use it on a trunk: the E&M, R2,
and LGS signaling uses DTMF, and as the plus sign (+) does not have a corresponding audio, the
number cannot be transmitted to the called side successfully. While the DSS1 signaling uses ISDN
transmission, the above problem does not exist. Therefore, you should avoid using a number that
cannot be identified by the signaling itself; otherwise, the call will fail.

Introduction to number substitution

According to the network requirements, you can first configure a number substitution rule list, and
then define specific number substitution rules, dot-match rules, and preferred number substitution
rules for the list. Finally, you can apply these substitution rules globally or to voice entities and voice
subscriber lines to substitute calling/called numbers flexibly.
If there exist multiple number substitution rules in a number substitution rule list, only one number
substitution rule will be matched. The match process is as follows:
Meaning
Wildcard, which can match any valid digit. For example, 555.... can match any
number beginning with 555 and ending in four additional characters.
Used to connect two numbers (The smaller comes before the larger) to indicate a
range of numbers, for example, 1-9 inclusive.
Delimits a range for matching. It can be used together with signs such as !, %, and +.
For example, [235-9] indicates one number of 2, 3, and 5 through 9.
Indicates a sub-expression. For example, (086) indicates the character string 086. It
is usually used together with signs such as !, %, and +. For example, (086)!010 can
match two character strings 010 and 086010.
A control character, indicating that the sub-expression before it appears once or
does not appear. For example, (010)!12345678 can match 12345678 and
01012345678.
A control character, indicating that the sub-expression before it appears one or more
times. However, if a calling number starts with the plus sign, the sign itself does not
have special meanings and only indicates that the following is an effective number
and the whole number is E.164-compliant. For example, 9876(54)+ can match
987654, 98765454, 9876545454, and so on, and +110022 is an E.164-compliant
number.
A control character, indicating that the sub-expression before it appears multiple
times or does not appear. For example, 9876(54)% can match 9876, 987654,
98765454, 9876545454, and so on.
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