Configuring Jabber on Android Phones on VPN

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Hi Friends,

I am trying to configure Cisco Jabber on mobiles.
The communication is to be done through VPN.

Here, when I am dialing from DN 8222 to DN 8216, 8216 gets notified about incoming call, he also answers the call, call counter is running here.
But both parties are not able to hear any one.
Here both the DN's are configured on Jabber on Android Phones.

But in other scenario 8222 or 8216 dials from mobile phone on other extension & if call is received on Hard phone, both way communication is happening properly.
Same is the case if the call is answered on Jabber on desktop/laptop.

The only issue is when DN's are on Jabber on mobile.

Note: Both the DN's are in same cluster

Please help...

[Jaime Valencia]

One way audio or no way audio are most commonly routing issues, make sure your VPN IPs can reach the internal IPs directly, and nothing is preventing the RTP from being routed directly between the devices.