SIP Phone registered with IPV6

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mudasar321

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Apr 18, 2019
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Hi, hope all is well. I've a query, we are using Grandstream wave app with fusionpbx. Some of users using mobile data and their provider broadcasting IPv6 instead ipv4. Once they get incoming call or call out it's one way media. If they register with ipv4 it works perfect. Please advise.
 
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mat1010

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Jun 8, 2019
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In which direction does the media work? Is it always the same direction?
Have you made sure that all required RTP ports are allowed in both directions through your firewall (if there is any) also via IPv6? You might consider to check the callflow with sngrep to see where the media is being sent.
 
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