Firstly Merry Christmas to all.
I have 2 standard udp SIP phone (A, B) with 2 webRTC SIP Phone (C and D).
When A and C are in communication there is not problem to send SIP (several SIP message) message from A to C. But where B and D are in communication to, many sip message are not send from Asterisk to D or from Asterisk to C.
The Sip messages arrive normaly from A and B to Asterisk but many are drop from Asterisk to C or to D.
Could you have any idea to understand and / or to solve this problem.