1. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED Connecting to Internet Telephony Service Providers with SIP Trunks ShoreTel & Ingate SIParator Jerome Joanny Senior Product Manager

2. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED Today’s Agenda The SIP trunk problematic(s) & How Ingate addresses them ShoreTel integration philosophy : TPP Demonstrate how to connect SIP trunks from an ITSP to a ShoreTel system using a ‘SIParator’ Provide an opportunity for Q&A from the floor

3. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED SIP trunking problematic NAT traversal for SIP – NAT resides at L3 – SIP at L7 – NAT processing “breaks” SIP addressing Network & SIP Communication security – Physical medium is the IP pipe – Firewalls control what goes in or out such pipe SIP Protocol Normalization & translation – Not all SIP are created equal … and compatible – Open Standard …open to interpretations

4. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED 603-883-6569 INGATE Siparator addressing the NAT issue Firewall IP 10.200.10.16 IP 168.203.30.11 972-678-0464 ShoreTel IP 168.105.45.19 To:972-678-0464@ IP 168.105.45.19 From: 603-883-6569 @10.200.10.16 To/URI:972-678-0464@ IP 168.105.45.19 From: 603-883-6569 @10.200.10.16 IP 168.203.30.11 account@provider.com For calls to route successfully internal IP addresses have to be re-written The SBC handles the Network Address Translation (NAT) Address re-write

5. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED 972-678-0464 ITSPs can’t reach the IPBX in the LAN Firewall IP 10.200.10.16 IP 168.203.30.11 603-883-6569 ShoreTel IP 168.105.45.19 From:972-678-0464@ IP 168.203.30.11 To:603-883-6569@168.105.45.19 Address re-write To/URI:603-883-6569@168.105.45.19 IP 10.200.10.16 For calls to route successfully IP addresses have to be re-written The SBC again handles the Network Address Translation (NAT) Service Provider can only address the known public IP- address of the Enterprise

6. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED No Need to Replace the Existing Firewall! Siparator How does the Siparator help? DMZ SIP-enables any firewall It works with existing firewalls Dynamically manages ports need for SIP: -SIP Signaling port 5060 -Range of UDP/TCP ports Provides a B2BUA & SIP Proxy Normal Firewalls SIP

7. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED B2BUA handles the “REFER” SIP method locally and a new media stream is set up to Jane Call-ID: X The ITSP SIP transfer problem SBC with B2BUA IP 168.203.30.11 DMZ 603-883-6569972-678-0464 ALG John 603-883-6580 Jane Bob Call-ID: X Hi John ! May I speak with Jane ? Sure! I will transfer you to Jane *) The REFER SIP method ? ShoreTel Re-INVITE Call-ID: Y ITSP sees a RE-INVITE with the same Call ID REFER to Jane

8. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED ShoreTel’s philosophy on integration ShoreTel Technology Partner Program - Mission Enable ShoreTel Reseller Partners to deliver complete business solutions to end customers with confidence Provide partners and customers with validated ‘end to end’ multi- vendor solutions in the SIP ‘plug and pray’ era Products undergo mutual validation testing to check compatibility We have validated interworking with 7 SIP carriers (Airespace,ATT IP Flex, Bandtel, Bandwith.com, Broadvox, Etherspeak, Gamma Telecom ) There are 20+ ITSPs in the pipeline

9. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED ShoreTel Technology Partner Program Mission Enable ShoreTel Reseller Partners to deliver complete business solutions to end customers with confidence Ex : Bandwidth.com is a TPP certified partner

10. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED Practical Demonstration Jerome Joanny, Sr Product Manager, ShoreTel Lisa Hallingstrom, System Engineering, Ingate

11. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED Detailed Demonstration Setup ShoreWare Director ShoreGear 90 SIParator IP 565 Bandwidth.com

12. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED THANK YOU © 2007 ShoreTel, Inc. All rights reserved worldwide. The ShoreTel logo, ShoreTel, ShoreCare, ShoreGear, ShoreWare, and ControlPoint are registered trademarks of ShoreTel, Inc. in the United States and/or other countries. ShorePhone is a trademark of ShoreTel, Inc. in the United States and/or other countries. All other copyrights and trademarks herein are the property of their respective owners.

13. ShoreTel CONFIDENTIAL -- FOR INTERNAL USE ONLY (c) ShoreTel, Inc. 2007 -- ALL RIGHTS RESERVED Backup Slide