...cost. To kit out a building, with about 100 users, with a VoIP network cost the company just 40% of an equivalent PBXsystem, he says. "I had to do the sums three or four times to make sure." The chosen installation was Cisco's Avvid...
http://www.computerweekly.com/Articles/2001/07/20/181438/tunnel-vision.htm
...Papers School District Extends PBXSystem With Unified Communications Solution...year-old Private Branch Exchange (PBX) system, which had reached capacity...communications capabilities with its PBXsystem. The school district can now...
http://whitepapers.techrepublic.com.com/abstract.aspx?docid=1100413