This VoIP Nugget explains in detail how to setup the tunnel server side. It then shows how to setup the 3CX VoIP Phone to connect from anywhere on the internet to 3CX Phone System.
You can find the first and the last part of this video tutorial series at the 3CX blog.
With 3CX Phone System Multi Tenant, you can host up to ten instances of 3CX Phone System in the cloud and offer it as a service for your customers to generate recurring profitable income.
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