I would like to verify if a specific SIP header exists, and if yes, extract
the partial content from another header.
1. Is there a way to verify if a specific header exists?
2. How do I extract data that is between the first : and the following @?
Specifically, The data looks like <1234567890> and I would
like to get only the 12345678901234567890>
I tried to use the CUT() command, but without success.