Lync 2013 A/V not working federated partner

Question

Hi,
I have an interesting problem. I cant make video calls / desktop sharing via only federated
domain. But IM working properly. There is a problem only A/V call.
in my lync organization :
1 front-end
1 edge
1 reverse proxy
From
To
Type
Result
My Lync User ( Inside )
My Lync User ( Outside )
IM & A/V & Desktop Sharing
Success
My Lync User ( Inside or Outside ) from PC
Federated Lync domain
IM
Success
My Lync User ( Inside or Outside ) from PC
Federated Lync domain
A/V & Desktop Sharing
Fail due network isses
My Lync User ( Inside or Outside ) from Lync Mobile  to Federated Lync domain, type: Audio / Video call. result:
success
If you sign in from Lync mobile client and start video call to federated domain worked successfully. But if you sign in from PC Lync 2013 client and start video call, to federated domain,
fail. Video invitation is reached federated domain and connection established but after a few seconds, A/V failed due network issues or audio video device not configured.
During issue, i collected log using OcsLogger on the Edge Server. I examined the collected log but I could not find a error line.
please help
thanks

Answer 1

Hi,
From your description above, there is something wrong during the deployment of Edge Server.
To avoid routing issues, make sure there are at least two network adapters in your Edge Servers and that the default gateway is set only on the network adapter associated with the external interface.
You can configure two network adapters in your Edge Server as follows:
Network adapter 1 (Internal Interface)
For example: Internal interface with 172.25.33.10 assigned.
No default gateway is defined.
Ensure that there is a route from the network containing the Edge internal interface to any networks that contain servers running Lync Server 2013 or Lync Server 2013 clients.
Network adapter 2 (External Interface)
Three private IP addresses are assigned to this network adapter, for example 10.45.16.10 for Access Edge, 10.45.16.20 for Web Conferencing Edge, 10.45.16.30 for AV Edge.
More details:
http://technet.microsoft.com/en-us/library/gg412787.aspx
Best Regards,
Eason Huang
Eason Huang
TechNet Community Support