Thank you for reply. No, there are not behind same NAT. I found out why brekeke sip server can't recognize UA1 as NAT. Becuase UA1's private ip is 172.168.0.8. I know basic private ip ranges are 10.0.0.0-10.255.255.255 172.16.0.0-172.31.255.255 192.168.0.0-192.168.255.255 But there are a lot of pcs ...

1. Brekeke Product Name and Version: Brekeke SIP Server Standard 3.7 UA1 in NAT register to brekeke SIP Server, but brekeke can't recognize UA1 as NAT. So SIP Server send rtp data to UA1's private ip. UA2 in NAT(another network) register to brekeke SIP Server, brekeke recognize UA2 as NAT well. Both ...

I already set [Configuration]->[RTP] page -> [RTP relay] = on You can see all SIP configurations on the link url below. http://61.111.12.2/brekeke/Brekeke_NoMediaRouting_Issue.pdf I guess it is related on SBC(Session Border Controller) functions. If you need any information, feel free contact me ...

Thank you for reply. UA1 can be any network environment on Internet.(All customer) 175.210.189.28(public) / 172.168.0.8(private) is just an example. So we don't need to set specific ip address in [Internal IP address pattern]. Is * available in [Internal IP address pattern] ? => All ip addresses ...

Before set ifsrc, both UA1 and UA2 can't received media data.
So I read admin manual, and set it. Then UA2 can receive UA1's media data.

Please see document below, I describe all situations.
http://61.111.12.2/brekeke/Brekeke_NoMe ... _Issue.pdf

Thank you in advance.

1. Brekeke Product Name and Version: Brekeke SIP Server Standard 3.7 2. Your problem: We use brekeke sip server on complicated environment like below. UA1 -> L4_1-> SIPSvr1 -> L4_2 -> SIPSvr2 -> UA2 UA1 on public network, UA2 on private network. L4_1 on public network. L4_2 on private network ...