2. Unified communications platform Enterprise-ready

4. Lync-to-PSTN callingLync-to-Lync calling Enterprise calling features On-site networking

5. Easy-to-use features

8. Network health monitor Fast in-call device switching

9. !

12. Customer Site Switch: 157.56.64.2 Port: 6/29 3910 163 rd Ave NE #3222 Redmond, WA 98052 SIP Trunk NENA i2 E911 service provider Circuit ELIN Gateway to PSTN Carrier

13. Advanced call handling

16. Supported Languages for Call Treatment Catalan French - France Chinese - ChinaGerman Chinese - Hong KongItalian Chinese - TaiwanJapanese DanishKorean DutchNorwegian English - AustraliaPolish English - CanadaPortuguese - Brazilian English - Great BritainPortuguese - Portugal English - USRussian English - IndiaSpanish - Mexico FinnishSpanish - Spain French - CanadaSwedish

17. Resilient

22. Lync Online

24. Public Switched Telephony Network (PSTN) Public Internet Calling Service Providers Signaling through Office 365 Audio media direct to carrier partner Lync Online User

26. Signaling to Lync Server & Office 365 Audio media stays onsite Lync Online User Customer Premises Lync Server On-premises Internet Lync Server User PSTN

28. Signaling through Lync Server Optimized audio media flow Internal Lync User Customer Premises Lync Server On-premises External Lync User Internet IP-PBX, Gateway or SIP Trunk

29. FeatureLync OnlineLync Online (Dedicated) Lync Server* Peer to Peer & PSTN calling, Emergency Dialing, Voice Mail. Call hold, Transfer, Forwarding, Delegation & Team Calling IP Phones, USB Peripherals & Mobile call via work Direct SIP Interoperability with on-premises PBX Private Line, Common Area Phones Call Parking, Unassigned Number Handling Analog Devices, Enhanced 911 Call Center Integration & Response Groups Network Resiliency, Call Admission Control *Configured with users hosted on-premises, either as sole deployment or Lync Hybrid

30. Replace the PBX