I like that you can use it in house with your own people, or outsource to call centers around world if needed! The customer service isn't great sometimes but as long its not too bad i'm fine wiht them!! You need some good salespeople because they are very difficult ti get things done at times without getting yelled/threatened etc which happens quite often when dealing wth airpax from our side of business dealings (which has been resolved). It's just another option for an external PBX solution - nothing special about this one really other than being easy enought fo most small companies who donot have their staffs highly trained IT personnel yet able ot create new systems themselves through automation using software such us cpanel & server control panels ect.. I like that it allows us to use our own branding, which other vendors do not allow you too - this makes things simpler in terms of customization as well! The only downside we've come across so far with airpax is its pricing structure; It's expensive compared to similar services from competitors such as RingCentral etc., but if your budget can accommodate then go ahead! We have been able to customize many aspects about how users interact through their phones (e.g. dialing codes).