We almost never have to worry about our phone lines becoming congested. Or rather, when we talk about congestion in the PSTN system we’re referring to the availability or the unavailability of a given route. Once a connection is obtained however, the telephone system works flawlessly. No matter how high the traffic is on other [...]

In today’s world, almost every device connected to the Internet sits behind a firewall. There are several reasons for this. Security is definitely one big factor since all traffic passes through a single point where it can be checked for malicious elements and where networkwide policies can be enforced. However firewalls these days double up [...]

Most of us have already used the Internet to make a voice call at some point in time. Skype of course has been around for quite long and other Internet voice services like Gtalk and Yahoo chat popularized free Internet voice communications. Unfortunately, these technologies do not perfectly replicate the traditional PSTN system. With Skype [...]