I am using a sip provider to handle my Asterisk calls. I connect to the sip provider in sip.conf. I also have a phone number with this company. When I try to make a call to an external number everything works fine. Also internal calling works fine. However when I call with my normal phone to the Asterisk server, nothing works. It doesn’t answer the call so after a short time I get an error on the screen of my phone. If I enable the debugging mode in Asterisk, I see nothing. If I do a tcpdump I see nothing.
Anyone an idea what’s wrong?
Thanks in advance!