1. All Contents © 2005 Burton Group. All rights reserved. VoiceConFall 2005: SIP - How Far Have We Come? 30 August 2005 Irwin Lazar Senior Analyst Ilazar@burtongroup.com 703-742-9659 http://www.burtongroup.com/

2. 2 Agenda SIP Today Communications Convergence SIP-Based Services Enterprise Recommendations

3. 3 The Reality of SIP The Future Is SIP…But what about the present? The Reality: All vendors of IP telephony products have a SIP story Not all of them have products Most enterprise telephony vendors only support SIP for interconnection, not for end-device signaling H.323 or its variants (Cisco “Skinny”, Siemens “CorNet”, Mitel “MiNet”) still dominate Why? Lack of agreement for SIP feature implementation A desire to protect phone system revenues??? ;-) Enterprise impact Lack of end-point choice - proprietary solutions

4. 4 SIP IP-PBXs Enterprise-Class fully SIP-based IP-PBXs are emerging: Commercial Examples: 3Com VCX 7000 Siemens HiPath 8000 Broadsoft Broadworks Mitel 3300 Avaya, Cisco and Nortel - Coming Soon! Open Source Examples: Pingtel SIPxchange SIPfoundry sipX

5. 5 SIP and Mobility Mobile Phones Increasingly Featuring SIP Client Capabilities Examples: Symbian agreements with Avaya and Nortel to embed SIP client on phone Research in Motion (RIM) agreements with 3Com/SIPQuest and Nortel to embed SIP client on Blackberry devices 3rd party clients such as Xten likely to be extended to mobile platforms

6. 6 SIP Use by Service Providers SIP in the Service Provider Environment SIP use by telephony ASPs Examples: Covad, DSL.net, Telverse, Vonage Provide “IP Centrex” or “virtual PBX” local service May include SIP phones/gateways for customer premises, proxy/redirect servers, PSTN gateways in local calling areas AT&T, MCI, Level 3 have launched SIP-based VoIP services CableLabs Distributed Call Signaling (DOCSIS) standard based on SIP SIP is basis for signaling in all future 3G IP wireless networks (IMS)

7. 7 Agenda SIP Today Communications Convergence SIP-based Services Enterprise Recommendations

8. 8 How Do I Contact Someone? How can I contact them? IM, voice, cell, e-mail, video? Can my system talk to their system? Are they available? Are they on the phone or in a meeting? Are they the right person for the inquiry? How do I arrange a conference call? What if they don’t dial into the teleconference? How do I share information? The Communications Detective

9. 9 The Big Picture Goal: a single communications infrastructure unifying collaboration, real-time communications, and presence Convergence not of voice & data, but rather convergence all forms of real-time communications into a unified application Combined with collaboration tools Integrated into business applications & processes Extensible beyond organizational boundaries Delivering measurable business benefit by streamlining and improving the ability for individuals and groups to communicate Converge non-real time communications (e-mail) Voice but just one component of a converged communications & collaboration infrastructure

10. 10 An Example Converged communications in action: April 1st 2005 - new product launch April 2nd 2005 - 10:00 AM, warehouse reports inventory shortage Inventory control application sends an IM to product manager alerting her of the problem Product manager calls a teleconference via presence portal System calls team members preferred devices Team members collaborate with real-time application information in current environments All done via a single click through a unified user interface

11. 11 Digital Phone IP Phone SIP / SIMPLE Presence Services Soft-phone IM Client PC w/ USB Camera Converged Presence- Based Client Mobile Phone Collaborative Applications SIP and Presence SIMPLE extends SIP to create a “glue” for converged communications

12. 12 SIP and Collaboration Vendors are rapidly delivering solutions in this space, but forces are colliding: In the VoIP Corner: Siemens HiPath OpenScape Nortel Multimedia Communications Server 5100 Avaya Converged Communications Server In the IM Corner: Microsoft LCS 2005 w/ “Istanbul” Office Communicator client IBM Lotus “Hanover” client Oracle Collaboration Suite Who Owns the Desktop Interface????

13. 13 Agenda SIP Today Communications Convergence SIP-based Services Enterprise Recommendations

14. 14 Presence Federation Instant Messaging Adoption of SIP/SIMPLE will allow federation of instant messaging services Both within and outside of an organization Example: Microsoft Live Communications Server using SIMPLE to interface with Yahoo IM and AIM Lotus SameTime interfacing with Jabber among departments or business partners Presence SIP/SIMPLE allows integration of presence information among disparate systems as well as for presence information to extend beyond organizational boundaries

15. 15 Presence/IM Federation Example Clearinghouse Enterprise BEnterprise C Enterprise DEnterprise A Direct Federation Connection

16. 16 SIP Trunking Services Eliminating local loops Enterprise sends calls to service provider via SIP Service provider routes calls to PSTN gateway nearest destination End result: Reduction in toll charges Elimination of local loops Service evolution SIPConnect defining common interface standards Many other vendor/carrier certification programs

17. 17 SIP Trunking Example IP-PBX Enterprise Location Provider Network SIP Provider Gateway NY New York PBX Customer Location Los Angels SIP Provider Gateway LA PSTN PRI

18. 18 Agenda SIP Today Communications Convergence SIP-based Services Enterprise Recommendations

19. 19 Enterprise Recommendations Pressure your vendors Improved SIP support broadens your choices of endpoints & systems Require SIP network interfaces on all communications products & services Open-standards based systems imply greater interoperability With each other, as well as emerging SIP trunking services At some point public ENUM will easily enable interconnection of “Islands” of VoIP via SIP Follow standards development Much work still being done in IETF SIP, SIPPING, SIMPLE WGs and SIP Forum

20. 20 More Enterprise Recommendations Determine an “owner” for collaboration & communications Typically a cross-functional group from voice, messaging, instant messaging groups Prepare for network management challenges Determine business case benefits Can you establish a tangible benefit to converged communications? Make converged communications part of your long-term plans Improved communications = lower costs and greater efficiency May lead to easier regulatory compliance