PBXpress is the best solution for office organization, call centers - small and medium business. It has a lot of useful features that will help to operate office telephony system easy and productively. It can handle 100 of simultaneous calls and at least 500 of extensions. With PBXpress it is possible to use some PSTN lines (their quantity depends on the kind of PSTN cards and hardware) and unlimited quantity of DID numbers. Every call which passes through PBXpress is recorded as a sound file on the internal hard drive. PBXpress has operator console and self-care interface. Also PBXpress has a very convenient and user-friendly web-interface that minimizes the efforts and makes the configuration of the system easier.
With PBXpress you won't need to develop any additional applications or write any additional code. It is easy to use plug-and-play system that doesn't require any technical background in order to configure it. You don`t need any additional software. You can use any PC but once install PBXpress there they won't be able to use it for other purposes.
For testing PBXpress you can download Live CD, please refer: http://pbxpress.com/live-cd-demo.htm
There is also a totally FREE version that you can install right now http://www.pbxpress.com/downloads.php
Please refer to http://www.pbxpress.com/ for more information.