Page History

...

When you set one line manually you have to “cut” incoming “cut”  called number in Gateway group to the pattern that you defined in “Inbound routes”.

...

If phone number is 02871 2397567 and you want  to let pass only last 3 digit digits (567) to extension 12, you have to cut off  02871 2397 and in "Inbound routes" set "Pattern" to ^(567) and "Target" to 12.

There are several ways how number can come, that depending on the provider. That's why you have to check all possibilities.

...

                                      ^(?: ( ?: (?: 0049|\+49|49|0)?2871)? 2397 )?(.*)     In $1 567 will be saved 567in $1 and compared to pattern in "Inbound routes".

If you want to use complete number 2397567 in “Inbound routes”.

...

                                                              ^( ?: (?: 0049|\+49|49|0)?2871)?(.*)                       In $1 2397567 will be saved  2397567saved  in $1 and compared to pattern in "Inbound routes".

Explanation:

(.*) – all numbers which still are there

...