One Way Audio Via Dual NIC.

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Amit Iyer

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Feb 6, 2018
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Hello,

I am facing one way audio on the calls. I have 2 Networks configured. One is Public IP and one is Private Network (From Voice Provider)
Public Network Config
IP:192.168.0.10
GW : 192.168.0.1

Private Network Config
IP : 10.0.0.5
GW : 10.0.0.4

Termination Config
Signalling IP : 10.0.1.10
Media IP : 10.0.1.11

I have configured 2 SIP Profiles one for Public Network and one for Private Network where the SIP IP / RTP IP and external SIP / RTP is configured correctly as per their networks.
I am able to receive and send calls via Private Network but the media is not being transmitted to my softphone.
I have also set IP route to send call the traffic to 10.0.1.10 and 10.0.1.10 from 10.0.0.4 gateway


When i send calls to the Termination i get the below Audio RTP
AUDIO RTP [sofia/pri/123456789] 192.168.0.10 port 43938 -> 10.0.1.11 port 20920 codec: 0 ms: 20

I believe the Audio RTP should be

AUDIO RTP [sofia/pri/123456789] 10.0.0.5 port 43938 -> 10.0.1.11 port 20920 codec: 0 ms: 20

How do i tell freeswitch that we need to send RTP to 10.0.1.11 from 10.0.0.5 ?

I have set the External IP / RTP IP to 10.0.0.5 in the pri sip profile but my phone is registered to sip profile 1 where the SIP / RTP IP is 192.168.0.10.

How do i set the proper NAT to make this work ?
 
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