The VoSKY Exchange 9140 is a PBX-to-Skype gateway that allows you to make phone calls all over the world, via Skype, without buying any new phone equipment. It’s a rack mount system, and it adds up to 8 Skype lines that will work with your current setup. These systems can be linked together to connect multiple offices all over the world. Because Skype rates are very inexpensive, and calls to other Skype users are free, businesses can save substantially on long distance charges. All these factors make the VoSKY Exchange 9140 a great value that will probably pay for itself within a few weeks of purchase.