Sprint Calls on Microsoft Lync, Saves Big with UC CIO.com:

Moving from TDM (Time-Division Multiplexing) circuits to a SIP (Session Initiation Protocol) architecture to enable VoIP for 450 Sprint sites: $6.7 million in savings.

Eliminating bi-annual PBX upgrade costs: $2.5 million in savings.

Web conferencing costs Moved from a third-party conferencing provider to Lync Live Meeting: $300,000 a month. “

Green” savings from eliminating the need to power and cool legacy PBX equipment: $700,000 annually.

Real estate savings from the reduction in rented square footage (1.5 million square feet and counting): $30 million annually.