How to Make a VoIP Call on a Blocked ISP
ISPs and Blocked VoIP Calls
As we've mentioned before, VoIP is an emerging industry. None of the major players in the game like the ISPs, the telcos and even governments are sure about how it's going to fit into the framework of communications. Truth be told, none of them are entirely happy about VoIP and would rather it didn't exist in the first place. Governments don't like it because it's difficult to monitor and decrypt and also because it steals business away from telcos which leads to lower tax revenues.
Telephone companies want it gone because VoIP provides a cheaper and better way to communicate and renders a lot of their infrastructure useless. As far as ISPs go, most of them are telcos anyway so there's a massive conflict of interest. But VoIP is here to stay and will remain so as long as the Internet remains the way it is and as long as people know how to convert voice data into digital signals.
Many countries and ISPs have banned VoIP on their networks. Today, we take a look at two ways of overcoming these restrictions and making VoIP calls even if you're unable to do it normally.
Use a VPN
A VPN is a Virtual Private Network where all traffic to and from your system is encrypted. There's a single secure server through which you connect to the Internet and all the data between the two of you is private.
ISPs are unable to filter or monitor this traffic both because of its encryption and because it doesn't behave like regular Internet traffic. Even applications which address a port can't be detected since it's only the main server's port on which the data is received. So a VPN is the ultimate solution for using VoIP if you want to bypass a ban.
The problem is that most VPNs cost a small monthly fee - starting at $5. Even this amount may be out of the budget of individual people - especially those in the third world.
Using a Proxy Server
A proxy server allows you to receive VoIP calls using a third party that isn't blocked by your ISP. You can use various SIP out ports for transmitting data. This information needs to be set in your SIP configuration utility that allows you to make your VoIP calls and enjoy great features such as an HD voice service!
Of course, for businesses using a PBX VoIP phone system, the last method won't really work. A VPN is a great idea provided the server to which you're connecting is able to use VoIP - it might need to be in a separate country for that purpose.
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