Unified Communications Open Interoperability (OIP) Program – Lync Server

Find out more about the Microsoft Unified Communications Open Interoperability Program for enterprise telephony services and infrastructure, including finding qualified SIP Trunking Services, E911 Service Providers, Survivable Branch Appliances, SIP-PSTN gateways, and IP-PBXs at https://technet.microsoft.com/en-us/lync/gg131938.aspx?ocid=soc-n-SA-loc-services-omers