I am searching for an easy way to check if a Callerid (number) contains one or more characters.
For example, I would like to know if the CallerID 123456789 contains the range “5678”.
In this case it does.
How can i check (with a dialplan function) if a set of characters is present in a CallerID ?
There is no function CONTAINS I presume ? That would be the best !