Hello Users,
When I tested the OpenSER server with CISCO ATA 186/188 IP phones SIP EyeP media (Softphnoes ) is working fine with RTP , when Both Users and SIP Server is in Behind the NAT,
But Problem with Softphones ( X-lite ) .
When I ngrep the Calls of X-lite users i didn't see any Ack Packet to OpenSER After the Invite Packets received .
Please Help me in this Part