Hello;
after your reply , i re-made this situtation again. I think i explain wrong the situation. There is 2 trunk in asterisk. 1 Trunk gets calls and other trunks make out the calls. so in my view at normal there is a two channel (i am not sure there is local channels) that two channel negotiate different events. So asterisk 11.25 can be made right negotiation as below but asterisk 13.13 fails to negatiate or transmit wrong codec rtp.
I hope i can explain what is wrong.
Uac1 isnt int Proxy registrar , just simple show Uac1 registerer on Proxy and int the middle of flow there is proxy that dont touch SDP packet.
Cheers
