I'd avoid it for the moment... It's not quite done as a product.
We have it, and may be going back to softconsole.
The principal problem we have is that it takes Avaya's involvement to install the product. There's a license file you need to load that's keyed to the MAC address of the PC's Network interface. If you have to upgrade, repair or replace the PC or NIC, you need to re-install the software, and re-generate this license.
Additionally, the product was created by a German group of programmers. Not that I have anything against German programmers, but the manuals and help files are not entirely translated into English. (Which is the language I need.) Even the product acronyms are not yet translated. For example, the Network Busy Indicator, (a busy lamp for a station on a networked PBX) is not described as NBI. It's an NBA. Why? Because the name of the indication in German is, Netzweite BesetztAnzeige.
Wait a bit. The next version of OSPC should be better. For my money, it needs a few more minutes in the oven before it's done.
Carpe dialem! (Seize the line!)