1. Open Standards: Communications at Your Desktop SmartCity Summit, April 29 th, 2003 Anne L. Coulombe Head of SIP-Based Solutions, Mitel Networks Anne_coulombe@mitel.com

2. What Does It Take To Play? Communications at the desktop What open standards do for YOU SIP is the multimedia standard that links it all together Devices that play in the SIP telephony market An idea of configurations Conclusions

3. The desktop has evolved into the epicenter of business communications PCs, phones, PDAs and cell phones are now a regular part of our professional life While PCs and wireless devices have evolved dramatically over the last 5-7 years the business phone has not until now SIP is the glue to bring disparate systems and devices together. SIP is an IP conduit to unify the desktop The Ever-Changing Desktop Device

4. Open Standards Customer Benefits Assumes use of IP (Internet Protocol), networks, Internet Scalable and futureproof Simplified communications network reduces system costs Delivers voice, e-mail, video and data to every desk Connects best of breed in multi-vendor environments Strengthens corporate culture inside distributed organizations with consistency across disparate systems Potential for new competitive business advantages

5. SIP – The Glue SIP is to VoIP what SMTP is to email and HTTP to the Internet The Session Initiation Protocol (SIP): Open peer-to-peer signaling protocol used for establishing sessions in an IP network Defacto standard for VoIP A session could be a simple two-way phone call, data exchange, or a collaborative multimedia conference A SIP server and client have complete control over their session (voice, video, conference, Instant Messaging, etc.) This is unlike traditional telecom systems, where services are controlled by a central switching element

6. SIP – A Bit More Unique opportunities for innovative services Service providers are creating new revenue-generating opportunities by bridging voice and data Open APIs 3 rd Party development model verticals, custom apps Strong instant messaging & presence capability Windows XP supports SIP Mobile phone companies are doing SIP development SIP is an RFC from the Internet Engineering Task Force (IETF), the global Internet standards body Mitel is an active SIP Forum member Mitel is hosting next SIPit, an industry interop event

7. Multimedia SIP Devices Hard Phones: wired, wireless, GSM Softphones: Windows XP, SIP Softphone PCs, servers, PBXs, Media servers PDAs Collaboration, Unified Messaging, Instant Messaging Video-conferencing

8. SIP Telephony

9. Issues Affecting Voice Quality Solving the top five voice quality issues: Jitter buffer Error interpolation & concealment Traffic shaping & routing Codecs: G.711, G.729, G.722.2, moving to wideband Echo canceling And now you want to measure this: PESQ, MOS score on a VoIP network Compared to cellular Compared to toll quality Bottom line for a user: it just has to sound GREAT

10. Internet or Intranet PSTN XP Multiple Small Offices in Different Cities (3050 ICP) Modem 3050 ICP Applications Management Center POTS Phone SIP-Enabled Switch/Router 5055 SIP Phones Enterprise Each Remote Office in a Different City XP 3050 ICP Broadband Printer SIP-to-PSTN Gateway

11. Internet or Intranet XP Opportunities: Hybrid Hosted Configuration Modem Mitel 3050 ICP Applications Management Center POTS Phone Switch 5055 SIP Phone Enterprise Broadband Application Server SIP Proxy PSTN SIP-enabled Firewall SIP-PSTN Gateways: in the provider cloud and/or CPE equipment Remote User Other Company Printer SIP-to-PSTN Gateway PSTN Gateway

12. Natural Convergence Booth #1404: Natural Convergences Silhouette Voice over IP Service Network for Smart City Summit 2003 Hosted by: LINES Civic Centre IP Telephones Aberdeen Pavilion BelNet Ethernet Trunk Public Switched Telephone Network BelNet Infrared Link

13. PSTN IP Access Network Hosted IP-PBX Architecture Service Provider Trunk Gateway VOISS Servers VOISS VPFW Enterprise Router/FW IP Phones Enterprise IAD/FW IP Phones Analog Phones SOHO Router/ FW IP Phone

14. NOCs Network Servers Application Servers Network Servers Application Servers Relay Servers Customer Premises Analog Phones KTS / PBX IP Phones PC Clients Data POPs Gateway Media Servers Softswitch TDM Networ k Proxy Server VoIP Networ k Media Servers Network Gateway Media Servers Voice POPs TDM Switch Network Connectivity Core Network

15. Conclusions Desktop is the epicenter of business communications Voice technology: mission critical technology 125 years after its creation SIP is the glue that links everything together Open standards are transparent to end-users Applications are the key differentiator at the desktop VoIP sounds wonderful

16. Thank You