Need configuration files to set up VoIP Phone

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Hi guys,

I've had a quick look and can't seem to find anything here; I'm looking to set up a VoIP phone using VPN.

The model of phone I have is Yealink IP  SIP-T26P. It says to set it up using OpenVPN using config files (.cnf, .crt, .key, etc) and was looking for a way to create this on the FortiClient system.

Does anyone know how I would do this?

Thanks