There are numerous conference call companies out there as well as numerous technologies available to facilitate conference calls using your own, internal communication system. One particular method of conference calling that is becoming increasingly more popular is VoIP Conference Calling or Voice Over Internet Protocol for those not in the know.
The attraction of using VoIP for conference calling, to most companies anyway is the cost. Or more importantly, the cost savings. As most VoIP services work solely over the Internet, their is no need to pay a percentage of the fees to the existing telecoms networks, which brings the price right down.
For the most part, VoIP calling is free and as well as the usual call features such as multiple party conversations and pin enabled secure dial in - you can also stream live video enabling the members of the call to use video to interact as well as voice / audio.
There is a wide range of software out there at the moment for conference calling from your PC, unfortunately, it is considered a little unprofessional in some circles which means that most business are still sticking with their existing, traditional dial in conference calling provider.