We have a Sprint Protégé CTX KSU phone system that was originally installed in our office building when it was built in 1999. The system was never fully integrated into our phone system. Well our new owner wants to get this system going, but we do not have any of the software for this system. And no one at our former owners do either. The main issue I am having is getting to where when a customer calls us and we answer that we can put the person on hold and transfer them directly to a person's voicemail. But we also have phones that do not ring when a call comes in and also some phones are not able to answer line 5 if someone calls that line. from what I see our system is pretty antiquated and no longer serviced. And no software is available for anything other than windows 98 (we have windows 7). HELP!!!