What is allowed with 9.@ route pattern and Route Filter = None? Does that mean that all calls are allowed according to NANPA, including international? Or something else?
Yes, you are right. With a 9.@ without any Route Filter, all calls under NANP would be allowed, including International. To check the Router Patterns added by NANP on CallManager, you can check the following file which has all the possible Router Pattern matches available.
Hope this helps