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Allows to adapt the incoming number in the SIP INVITE to match the configured number.

Example:

Phone numbers are configured in the format:

1. 0287191123450
2. 0287191123451

Image Removed

Incoming SIP INVITE contains the number: 0049287191123450

0049287191123450 ≠ 0287191123450 → Incoming call is not working.

You need to change that the incoming number is changed:

Software 2.01 or higher is needed !!!

Special Characters Used in Pattern Matching

Within the pattern, we use various letters and characters to represent sets or ranges of numbers. Here are the most common letters:

• X The letter X or x represents a single digit from 0 to 9.
• Z The letter Z or z represents any digit from 1 to 9.
• N The letter N or n matches any digit from 2-9

Ranges used in Pattern Matching

A numeric range can be used to match against a dialed number. This is also called a Character Set

• [1237-9] This pattern matches any digit in the brackets. In this example, the pattern will match: 1,2,3,7,8,9

Wildcards used in Pattern Matching

The following special characters are considered wildcards

• The '.' character matches one or more digits
• The '!' character matches zero or more digits immediately

More information can be found here: https://docs.asterisk.org/Configuration/Dialplan/Pattern-Matching/

Example:

Phone numbers are configured in the format:

1. 0287191123450
2. 0287191123451

Image Added

Incoming SIP INVITE contains the number: 0049287191123450

0049287191123450 ≠ 0287191123450 → Incoming call is not working.

You need to change that the incoming number is changed:

1. Strip the 0049
2. Add an 0 

Enter the name for this pattern.

Pattern: "0049!" The number starting with "0049" followed by zero or more digits

Cut: "4" Removes the first 4 digits "0049"

Prepend: "0" Add a "0" in front of the number

Select the VoIP provider where the Pattern should be used.