we have CM 4.0. will connect voip service provider.
they offer gatekeepr with H323.
for h225 trunking , i configured router
static nat (for callmanager).
i opened port 1718 , 1719 , 1720 for
but , it is not registring ,never.
after i configured gatekeeper for testing in internal , i tested it.
it was sucess in internal.
how do i check it , first ?