Found a lot of topics with simillar problems,btw no one configuration iv tryed didnt help me.
I have asterisk installed on my home raspberry, its behind NAT. Port forwarding on router is configured.
Firewall on rasp is disabled.
Raspberry has a dongle connected. Idea is to connect via internet to asterisk from smartphone and make/accept calls from sim card,installed in dongle.
Everything works,when im connected from internal network, but when i connect from outside, i can make/accept calls, but without any voice.
;icesupport = yes;
alwaysauthreject = yes;
Requesting for help to solve voice problem)
P.S. there ine more problem
If ill cancel call before its connected to abonent(i can hear ring), i cant call anymore dongle is bisy. Reboot of the asterisk helps, but i dont think is a nice decision)