Hello Users, Good Morning, What are Type of the NAT is used for OpenSER for production , OpenSER is inside the NAT (router/firewall ) 1) I tested with 2 SJ phones and 2 cisco ATA phones, UAC's are in Behind the NAT, UACs are in the Same N/w with one public_address, SJ phone show the NAT type is Symmetric NAT this case is Working Fine, For example : [Behind the NAT1 ] [Behind the NAT2] [Behind the NAT1 ] SJphone --------| firewall]-----------------------> OpenSER-------[firewall]--------------> ATA phone
2) When SJ phones or HardPhones are in Different network behind the NAT of the OpenSER server, here SJ phone shows the Port Restricted core NAT Here media is not is signaling at all , in this Case....
For example : [Behind the NAT1 ] [Behind the NAT2] [Behind the NAT3 ] SJphone ----------[firewall]---------------------> OpenSER--------[firewall ]-------------> ATA phone
SIP NAT Traversal support only Symmetric NAT , ?
Then How to solve this issue ? Please Help ?