The Cisco Unified Communications 520 for Small Business (UC520) is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 2011-09-13
End-of-Support Date: 2016-09-30
Cisco's End-of-Life Policy
You can view a listing of available Cisco Unified Communications 500 Series for Small Business (UC500) offerings that best meet your specific needs