Voice Translation Rules
Document ID: 61083
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Simple Match and Replace
Pattern Match with Wildcards
Number Slice
Number Type and Plan
Reject Calls
Apply Rules
More Examples
Truncate Numbers Down to the Last Two Digits
Remove Unwanted Digits in a Number
Related Information
Introduction
This document discusses how to define voice translation rules.
Note: The syntax used throughout this document is:
•rule precedence /match pattern/ /replacement pattern/
Note: / −− / delimits the whole number.
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
This document is not restricted to specific software and hardware versions.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Simple Match and Replace
Example 1
This example replaces the first occurrence of the number "123" with "456".
voice translation−rule 1
rule 1 /123/ /456/
These are test voice translation−rule examples:
router#test voice translation−rule 1 123
Matched with rule 1
Original number: 123 Translated number: 456
router#test voice translation−rule 1 1234
Matched with rule 1
Original number: 1234 Translated number: 4564
router#test voice translation−rule 1 6123
Matched with rule 1
Original number: 6123 Translated number: 6456
router#test voice translation−rule 1 6123123
Matched with rule 1
Original number: 6123123 Translated number: 6456123
Original number type: none Translated number type: none
Original number plan: none Translated number plan: none
In this example, the rule matches the first occurrence of the number that contains the pattern "123" anywhere
in the number. Specifically, you can use the start and end of number indicators. The Example 2 and Example
3 sections show this.
Example 2
This example shows how to replace any occurrence of "123" at the start of a number with "456".
voice translation−rule 1
rule 1 /^123/ /456/
These are test voice translation−rule examples.
router#test voice translation−rule 1 123
Matched with rule 1
Original number: 123 Translated number: 456
router#test voice translation−rule 1 1234
Matched with rule 1
Original number: 1234 Translated number: 4564
router#test voice translation−rule 1 6123
6123 Didn't match with any of rules
Example 3
If you want only the match of an exact number, specify both the start and end number indicators:
voice translation−rule 1
rule 1 /^123$/ /456/
router#test voice translation−rule 1 123
Matched with rule 1
Original number: 123 Translated number: 456
router#test voice translation−rule 1 1234
1234 Didn't match with any of rules
router#test voice translation−rule 1 6123
6123 Didn't match with any of rules
Pattern Match with Wildcards
These tables define wildcard and wildcard combinations and show some examples.
Wildcard
Definition
.
Any single digit
0 to 9,*,#
Any specific character
[0−9]
Any range or sequence of characters
*
Modifiermatch none or more occurrences
+
Modifiermatch one or more occurrences
?
Modifiermatch none or one occurrence
Wildcard
Combination
.*
.+
^$
Example 1
Definition
Any digit followed by none or more
ocurrences. This is effectively anything,
including null.
Any digit followed by one or more
ocurrences. This is effectively anything,
except null.
No digits, null
This example replaces any five−digit number that begins with "40" with the number "6666000".
voice translation−rule 1
rule 1 /^40.../ /6666000/
router#test voice translation−rule 1 40123
Matched with rule 1
Original number: 40123 Translated number: 6666000
Example 2
This example replaces all numbers with "5554000".
voice translation−rule 2
rule 1 /.*/ /5554000/
router#test voice translation−rule 2 123
Matched with rule 1
Original number: 123 Translated number: 5554000
router#test voice translation−rule 2 86573
Matched with rule 1
Original number: 86573 Translated number: 5554000
router#test voice translation−rule 2 ""
Matched with rule 1
Original number: Translated number: 5554000
Example 3
This example replaces all numbers, except null, with "5554000".
voice translation−rule 2
rule 1 /.+/ /5554000/
router#test voice translation−rule 2 123
Matched with rule 1
Original number: 123 Translated number: 5554000
router#test voice translation−rule 2 ""
Didn't match with any of rules
Example 4
This example replaces any number that starts with a combination of zeros (0, 00, and so forth) with "909".
voice translation−rule 5
rule 1 /^0+/ /909/
router#test voice translation−rule 5 0123456
Matched with rule 1
Original number: 0123456 Translated number: 909123456
router#test voice translation−rule 5 00123456
Matched with rule 1
Original number: 00123456 Translated number: 909123456
router#test voice translation−rule 5 000123456
Matched with rule 1
Original number: 000123456 Translated number: 909123456
router#test voice translation−rule 5 123456
123456 Didn't match with any of rules
Number Slice
You can use number slice when you need to copy parts of a matched number across to the replacement
number. You slice the matched number into sets that you can keep or ignore.
Character
Description
( )
In the match pattern, indicates where to slice up the
number.
In the replacement pattern, indicates where to copy
the sets to keep.
Indicates which sets in the matched number to
keep.
Character Usage
Description
(a)
b
1
Keep expression "a".
Ignore expression "b".
Copy the first set into the replacement
number.
Generic Example
This example provides a general explanation.
/ (x) y (z) / /w12/
Split the matched number into three sets of x, y, and z. The backward slash () indicates the places to slice up
the number. The brackets () indicate which sets you want to reuse in the replacement pattern. The w represents
additional digits to insert into the replacement number.
•Set 1 becomes expression x.
•Set 2 becomes expression z.
•Expression y is ignored.
The replacement number is a concatenated number: wxz.
Specific Example
This example provides further detail:
voice translation−rule 1
rule 1 /^(12)3(45)$/ /612/
•Set 1: 12
•Set 2: 45
•Ignore: 3
router#test voice translation−rule 1 12345
Matched with rule 1
Original number: 12345 Translated number: 61245
Number Type and Plan
You can restrict matches to particular number or plan types. Also, you can alter the replacement plan or type.
Example 1
In this example, if a number starts with "4" and the type is "national", the rule adds "90" as a prefix. If the
type is "international", the rule adds "900" as the prefix.
voice translation−rule 7
rule 1 /^4/ /904/ type national national
rule 2 /^4/ /9004/ type international international
router#test voice translation−rule 7 493456567 type national
Matched with rule 1
Original number: 493456567 Translated number: 90493456567
Original number type: national Translated number type: national
Original number plan: none Translated number plan: none
router#test voice translation−rule 7 493456567 type international
Matched with rule 2
Original number: 493456567 Translated number: 900493456567
Original number type: international Translated number type: international
Original number plan: none Translated number plan: none
This is useful when telephone companies (Telcos) remove access codes on national and international
numbers. You can add the correct prefix with the number type as a basis.
Example 2
This example changes the number type and plan.
voice translation−rule 8
rule 1 /^2(...$)/ /017793451/ type unknown national plan unknown isdn
This rule matches any four−digit number that starts with "2". The rule removes the "2", adds the number
"01779345" as a prefix, and sets the plan to "isdn" and the type to "national".
router#test voice translation−rule 8 2001 type unknown plan unknown
Matched with rule 1
Original number: 2001 Translated number: 01779345001
Original number type: unknown Translated number type: national
Original number plan: unknown Translated number plan: isdn
Reject Calls
Use the reject keyword to reject calls that match. This example rejects all calls that start with "234".
rule 1 reject /^234/
router#test voice translation−rule 10 1234
1234 Didn't match with any of rules
router#test voice translation−rule 10 2345
blocked on rule 1
Apply Rules
Voice Translation Rules are applied to Voice Translation Profiles. These profiles are then applied to dial peers
or voice ports. Profiles can be applied to VoIP or POTS dial peers or voice ports, and can be applied to
inbound or outbound calls. A profile can translate Called, Calling, or Redirecting numbers.
voice translation−rule 3
rule 1 /123/ /456/
voice translation−profile profile1
translate calling 3
dial−peer voice 10 pots
translation−profile outgoing profile1
More Examples
Truncate Numbers Down to the Last Two Digits
rule 1 /^.*(..)/ /1/
This is a number divided into one set and one ignored statement.
•Ignored: ^.* None or more digits from the beginning of number
Set 1: .. two digits
The replacement statement specifies Set 1. This rule copies the last two digits of the number.
router#test voice translation−rule 9 12345
Matched with rule 1
Original number: 12345 Translated number: 45
router#test voice translation−rule 9 123456
Matched with rule 1
Original number: 123456 Translated number: 56
Remove Unwanted Digits in a Number
This example is useful because certain Telcos have been known to insert hypens into calling party numbers.
Since this is against standards, it causes the calling party number to be ignored. The Telco sends the calling
numbers in two formats, with one hypen and sometimes with two. Two
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