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How to fix audio issues with Sangoma Phone Desktop Client due to NAT.

NAT issues

When you use NAT you may face some audio issues with sangoma phone desktop clients, such as "one way audio" or "Calls dropping after XX Seconds". This issue can be resolved with below mentioned settings.

Adding STUN server address

Browse to Settings → Astersik SIP settings page and add STUN Server Address under WebRTC Settings. You can find the list of stun servers at STUN Servers.

Adding ICE host candidates

Browse to Settings → Astersik SIP settings page and add Candidates under ICE Host Candidates. Local address will be your server's local LAN IP address and advertised address will be your public address.

Note : You need to use your public IP here, using FQDN will not work.

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