I have a sip provider, we have the trunks registered and calls and flowing most of the time.
inbound calls fail multiple times each day.
The sip provider tells us that we need to edit the sip.conf file. But we all know that we should not do that with freepbx.
the issue they see is an “s” comming from us.
they want us to add this line to the trunk config to fix that issue.