Couple of quick questions

I keep seeing in my logs, issues like the following coming up…

[2015-01-31 09:24:39] WARNING[31608] pbx_config.c: The use of '_.' for an extension is strongly discouraged and can have unexpected behavior. Please use '_X.' instead at line 127 of extensions.conf

Upon looking at the line in question, I do see the complaint above, which is within the [from-sip-external] context.

exten => _.,1,Goto(from-pstn,${CUT(CUT(SIP_HEADER(To),@,1),:,2)},1)

I am wondering if I should go ahead and make the change or just ignore it?. I know it is not life and death, it is just a warning, it posses no harm either or at least none that I know of. Your thoughts?

It is just a warning so it is not critical. If you change the file the changes will get overwritten when the system is updated.

That is what my suspicions were… I presume that is more of an Asterisk thing than FreePBX anyway…