Cisco's Robert Redford on Services Oriented Networks Architecture

I interview Robert Redford and Greg Mayfield of Cisco to understand their Services Oriented Network Architecture or SONA.  While all major IP telephony firms have positioned WebServices/SOA as the new communications application development platform, Cisco focuses on the network as the IT platform.  Cisco uses SONA to position the network beyond a connectivity service to a platform with callable services such as location, authentication, presence, call control etc.  It is a great discussion for anyone interested in where IT is going