Sprint weathered the challenges and reaped the rewards of killing off PBX
systems and moving to a unified communications suite with Microsoft Lync. Here’s
how this transition made life easier for Sprint workers and saved millions in
reduced technology and real estate costs.
http://www.cio.com/article/696002/Sprint_Calls_on_Microsoft_Lync_Saves_Big_with_UC
I have been so bewidleerd in the past but now it all makes sense!