Hi,
I'm trying to get an external SIP client (SPA921) to work with my 3cx server over the web. I know a VPN works fine but as its for a mobile users this isn't a workable solution. What ports do I need to open from the firewall for the 3cx to work properly. All other functions are working at this time.
I'm trying to get an external SIP client (SPA921) to work with my 3cx server over the web. I know a VPN works fine but as its for a mobile users this isn't a workable solution. What ports do I need to open from the firewall for the 3cx to work properly. All other functions are working at this time.
