I am building webphone using asterisk 13.12.0 JSSIP and WebRTC.
When I make a call between 2 computer on the same VPN everything is fine
But when I call outside from my computer, the connection is not possible
Asterisk CLI Messages
ERROR  [C-00000038] chan_sip.c: Serious Network Trouble; __sip_xmit returns error for pkt data
And I realize the ip address used for registration and the ip address used for audio transmission is different, it seems to only use the internal ip address to transmit the audio and that is the reason I cannot connect to the outside.
Can someone tell me why and what am I doing wrong
Thanks for my bad English