Reomte extension using mobile network

I want to use a sip cilent on my mobile phone as an extension while away for our main landline. Are there any best practices for this? think of a vpn from mobile to freepbx server.

Ia there any security issues / dos and donts


Been using the OpenVpN Server configured with System Admin Pro and Android OpenVPN client with success:

A general recommendation for VOIPing from cell phones is to use TCP rather than UDP to conserve battery life. That would go for either direct connections or VPN’s.

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Thanks both for you advice.

Will have a play around, any security issues i should consider?

Generally your server should have the security applied. Attacks against voip clients on a cell phone would be a new thing. I am not saying it can’t happen but we would have to wait until such a vector be identified.