It’s out with the old and in with the new for business phone systems around the world. IP-PBX (News - Alert) systems with unified communications capabilities and softphone technology are replacing legacy PSTN systems worldwide; in 2015, they are more ubiquitous than ever and will be even more so going forward. A recent study revealed that 88 percent of Australians use a softphone at least once a week and the country’s cloud communications market is set to reach AU$650 million in the next five years.