I followed the “Hello World” asterisk wiki (in this link :https://wiki.asterisk.org/wiki/display/AST/Hello+World ). When I try to make a call, i have a message in Asterisk CLI:
------- strict RTP learning after remote.
In my SIP softphone (i use Zoiper), when i make the call (with the 100 extension), there is no ring tone and some seconds later, i have a message: 408 request timeout.
Thanks for helping me.