1. © 2008 AudioCodes Ltd. All rights reserved. Advanced Topologies for Microsoft Unified Communications Networks Haim Melamed Director, Corporate & Channel Marketing hmelamed@audiocodes.com

2. Long standing technology alliance –Microsoft developed its SIP VoIP gateway interfaces with AudioCodes Mediant 2000 Marketing partners –AudioCodes MediaPacks were the only gateways chosen for the “OCS Ignite Road show” –Global train-the-trainer tour in San-Francisco, Toronto, London, Amsterdam, Singapore “Dogfood” for Microsoft IT –AudioCodes gateways are used within Microsoft IT for OCS deployments AudioCodes and Microsoft

3. AudioCodes Edge Formula for Success Modularity & Scalability Flexibility Manageability High Availability + Smart, Flexible, Scalable, Manageable, High Availability Unified Communications Solutions for Enterprises

4. AudioCodes Edge Formula for Success Flexibility Wide range of interfaces Wide protocol support Interoperability with: Softswitches, PSTN, PBXs and IP-PBXs Modularity & Scalability Number of ports from 2FXS to 240 E1s on same chassis Manageability CLI, WEB, Telnet Central Management system for large installations High Availability Dual PS PSTN fallback Life Line

5. Media Gateway Types G.711 SIP/TCP RTAudio Microsoft Mediation Server Basic Gateway SIP/TLS SRTP PCM E1/T1/BRI/FXO PBX PSTNPSTN Office Communication Server 2007

6. Media Gateway Types RTAudio Basic Hybrid Gateway with Integrated Mediation Server SIP/TLS SRTP PSTNPSTN PCM E1/T1/BRI/FXO PBX Office Communication Server 2007 G.711 SIP/TCP RTAudio Microsoft Mediation Server Basic Gateway SIP/TLS SRTP PCM E1/T1/BRI/FXO PBX PSTNPSTN Office Communication Server 2007

7. High Availability Flexibilty Manageability Scalability Gateway Breadth and Scalability –Low end demo kit & small branch office – MediaPack MP114/118 MediaPack 114 - 2FXS/2FXO and MediaPack 118 - 4FXS/4FXO –Entry level and Mid Range – Mediant 1000 Up to 4 E1/T1 + a mix of up to 20 BRI/FXS/FXO in 1U chassis Supports “Basic Hybrid Gateway” for 30 active channels (OCS R1 – OSN1) Supports “Basic Hybrid Gateway” for 120 active channels (OCS R2 – OSN3) Uniform Functionality, Manageability and Protocol Support

8. High Availability Flexibilty Manageability Scalability Gateway Breadth and Scalability –High End – Mediant 2000 Up to 16 E1/T1 in 1U chassis Supports “Basic Hybrid Gateway” for 120 active channels (OCS R2) –High End – Mediant 3000/5000/8000* Mediant 3000 with up to 63 E1/84 T1 in 2U chassis* Mediant 5000 with up to 96 E1/T1 in 5U chassis* Mediant 8000 with up to 240 E1/T1 in 12U chassis* High availability platforms * Formal certification pending Highest Scale In Market Uniform Functionality, Manageability and Protocol Support

9. © 2008 AudioCodes Ltd. All rights reserved. Basic OCS and Exchange 2007 Topologies

10. VoIP Gateways provide mediation between the PBX and SIP based Microsoft applications SMDI E1/T1 Exchange Server 2007 FXO FXO / BRI E1/T1 Mediant 1000 (Mixed) Mediant 2000 (Digital) MediaPack (Analog) Office Communications Server 2007 Basic Enterprise Network Topologies Mediation Server

11. © 2008 AudioCodes Ltd. All rights reserved. Advanced Topologies For Microsoft Solutions

12. 1. Basic configuration - Integrating OCS and UM Using a Single Gateway 2. Enabling Auxiliary Services (such as Fax, Modem, Alarm systems) on OCS 2007 3. Enabling Connectivity of Non-certified IP-Telephony systems to Exchange 2007 4. Enabling Connectivity of Non-certified IP-Telephony systems to OCS 2007 5. Enabling Connectivity of Internet Telephony Service Provider (SIP Trunking) to OCS 2007 6. Migration Path to Unified Communications 7. Alternative Routing in Failure Conditions 8. Using the Gateway in a “Drop & Insert” configuration 9. Active Directory Lookup support for Survivability and Smooth Migration 10. SNOM Phones redundant solution

13. Basic configuration Integrating OCS and UM Using a Single Gateway Mediant 1000 operating simultaneously with Exchange and OCS 2007 Results in CapEx/OpEx reduction

14. Enabling Auxiliary Services on OCS 2007 OCS 2007(Mediation Server) does not support Fax, Modem & Alarm systems services Enterprise wishes to use OCS, but wants to continue providing these auxiliary services AudioCodes gateways enable existing Fax machines at the enterprise to remain operable Regular operation of Fax machines is kept by using advanced dialing plans

15. Enabling Connectivity of Non-certified IP-Telephony systems to Exchange 2007 Most IP-Telephony systems don’t meet Microsoft’s functional specifications The few IP-Telephony systems that do meet Microsoft’s functional specifications require hardware and/or software upgrades By using AudioCodes Media gateway IP-to-IP mediation, the existing IP telephony system does not need to be upgraded or replaced Simple and cost-effective solution

16. Enabling Connectivity of Non-certified IP-Telephony systems to OCS 2007 H.323 SIP (H.323-SIP)

17. Example: Cisco Call Manager Enabling Connectivity of Non-certified IP-Telephony systems to OCS 2007

18. SIP (UDP) SIP (TCP) (SIP-SIP) Enabling Connectivity of Non-certified IP-Telephony systems to OCS 2007

19. Enabling Connectivity of Internet Telephony Service Provider (SIP Trunking) to OCS Using AudioCodes gateway for interworking between OCS 2007 and the ITSP (SIP Trunking) offers Enterprises the following benefits: Easy and smooth integration with one or more ITSP SIP trunks with different behaviors or requirements for the same device Registration and authentication with ITSP servers (on behalf of the Enterprise's IP telephony system) even if the Enterprise's IP telephony system does not support registration and authentication Alternative routing to different destinations when the connection with the ITSP network is down Fallback to legacy PSTN telephone network upon Internet connection failure Two ITSPs providers

20. PSTN PBX Phones & Faxes Legacy Voicemail Migration Path to Unified Communications (Today)

21. Migration Path to Unified Communications (Introducing Exchange 2007) Exchange UM PSTN PBX Phones & Faxes LAN AudioCodes Mediant

22. Migration Path to Unified Communications (Introducing OCS) OCS Clients (OC & IP Phones) OCS Exchange UM PSTN PBX Phones & Faxes LAN AudioCodes Mediant

23. Migration Path to Unified Communications (Complete) PSTN Phones & Faxes OCS Clients (OC & IP Phones) OCS Exchange UM LAN AudioCodes Mediant

24. Alternative Routing in Failure Conditions (OCS ->PBX/PSTN ) Example

25. X Alternative Routing in Failure Conditions (OCS ->PBX/PSTN ) Example

26. X Alternative Routing in Failure Conditions (OCS ->PBX/PSTN ) Example

27. Alternative Routing in Failure Conditions (PBX/PSTN->OCS ) Example

28. X X Alternative Routing in Failure Conditions (PBX/PSTN->OCS ) Example

29. X X Alternative Routing in Failure Conditions (PBX/PSTN->OCS ) Example

30. 100 101 533-1214-2167 443-8834-5xxx PSTN Switch 1 Example Using Gateways to Reduce PBX Connections

31. 200 201 100 101 533-1214-2167 443-8834-5xxx PSTN Switch 1 2 Example Using Gateways to Reduce PBX Connections

32. 200 201 100 101 533-1214-2167 443-8834-5xxx PSTN Switch 1 Example Using Gateways to Reduce PBX Connections

33. 200 201 100 101 533-1214-2167 443-8834-5xxx PSTN Switch 1 Example Using Gateways to Reduce PBX Connections

34. 200 201 100 101 533-1214-2167 443-8834-5xxx PSTN Switch 1 Example Using Gateways to Reduce PBX Connections

35. 200 201 100 101 533-1214-2167 443-8834-5xxx PSTN Switch 1 Example Using Gateways to Reduce PBX Connections

36. Implementing AudioCodes gateways eliminates all the costly drawbacks of a typical topology as listed below: Typical Deployment (Without AudioCodes Gateway) Deployment Using AudioCodes Gateway Purchase new trunk(s) Not Required  - remain with existing trunks Upgrade PBX (software and/or hardware) to support more concurrent calls Not Required  - PBX handles only calls related to PBX users Purchase PBX licenses to support additional trunks and calls Not Required  - remain with existing license Modify PBX routing Not Required  - remain with existing routing Request (and purchase) PBX technical support to perform all above Not Required  Using Gateways to Reduce PBX Connections

37. Active Directory Lookup support for Survivability and Smooth Migration

39. Survivability for Snom IP-Phone & OCS 2007

40. Example Normal Mode Registration

41. Survivability for Snom IP-Phone & OCS 2007 Normal Mode Operation Example Normal Mode

42. Survivability for Snom IP-Phone & OCS 2007 Point of Failure Example Emergency Mode - OCS 2007 server failure at HQ

43. Survivability for Snom IP-Phone & OCS 2007 Point of Failure Example Emergency Mode - OCS 2007 server failure at HQ Registration

44. Survivability for Snom IP-Phone & OCS 2007 Emergency Mode Operation Point of Failure Example Emergency Mode - OCS 2007 server failure at HQ

45. Survivability for Snom IP-Phone & OCS 2007 Example Emergency Mode – WAN failure/loss at remote branch office Point of Failure

46. Survivability for Snom IP-Phone & OCS 2007 Example Emergency Mode – WAN failure/loss at remote branch office Point of Failure Registration

47. Survivability for Snom IP-Phone & OCS 2007 Emergency Mode Operation Example Emergency Mode – WAN failure/loss at remote branch office Point of Failure

48. Advanced Scenarios Documentation

49. Product Support On AudioCodes Website www.audiocodes.com/microsoft www.audiocodes.com/microsoft Exchange 2007 Details User Manuals Demo Firmware Certified PBX’s Qualified Products OCS 2007 Details User Manuals Demo Firmware Certified PBX’s Qualified Products