The Proliferation of Session Initiation Protocol Matt Lazaro, Sr. Manager, Avaya Inc.

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Agenda Basic concepts and introduction to SIP Value of SIP in Communications Using SIP to enhance the user experience Lowering costs with SIP Leveraging unparalleled flexibility with SIP

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Introduction to SIP

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara SIP Fundamentals SIP is: –A signaling protocol for multiple types of sessions –Based on well-known Internet protocols –Simpler to program, troubleshoot, and integrate –Able to provide presence, preferences, and mobility, natively –An enabler of Intelligent Communications Business Communication Applications Vision ANY NETWORK BUSINESS COMMUNICATION APPLICATIONS BUSINESS APPLICATIONS BUSINESS PROCESSES Infrastructure BUSINESS APPLICATIONS

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Components of SIP Endpoints/User Agents –User Agent Client Generates and sends SIP requests and receives responses –User Agent Server Receives SIP requests and generates SIP responses Services –Registrar Provides mapping of logical SIP addresses to physical SIP addresses –Location Service Used by SIP Proxy or Redirect server to obtain the mapping from logical SIP addresses to physical SIP addresses –Proxy Server Forwards SIP requests downstream and responses upstream –Redirect Server Generates 3xx responses directing clients to contact an alternate set of URIs –Presence Server Acts as a Presence Agent or proxy server for SUBSCRIBE/NOTIFY requests

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara SIP Messages Requests (Methods) REGISTER –Register contact information INVITE, ACK, CANCEL –Setting up sessions BYE –Terminating sessions OPTIONS –Querying servers about their capabilities SUBSCRIBE, NOTIFY (RFC 3265) –Event notification framework MESSAGE (RFC 3428) –Instant messages Responses 1xx: Provisional –request received, continuing to process the request 2xx: Success –the action was successfully received, understood, and accepted 3xx: Redirection –further action needs to be take in order to complete the request 4xx: Client Error –the request contains bad syntax or cannot be fulfilled at this server 5xx: Server Error –the server failed to fulfill an apparently valid request 6xx: Global Failure –the request cannot be fulfilled at any server

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Example Call Flow Bob INVITE 407 Proxy Authentication Required 180 Ringing ACK Alice BYE 200 Ok Bob hangs up Proxy ACK INVITE 100 Trying INVITE 180 Ringing 200 Ok ACK BYE 200 Ok RTP Bob answers Alice calls Bob

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara What is SIMPLE? SIP for Instant Messaging and Presence Leveraging Extensions –IETF working group Introduces “Presence” into communications state –Builds on RFC 3265 –Now a standard: RFC 3856 –Selected as basis for 3gpp networks & applications

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara What is SIPPING? Session Initiation Protocol Project INvestiGation –IETF working group Chartered to document the use of SIP for several applications related to telephony and multimedia SIPPING-19 refers to SIP Services Examples draft –draft-ietf-sipping-service-examples-08 –19 example telephony features implemented in SIP –Purpose is to ensure that basic features interoperate Other SIPPING items –SIP Basic Call Flow Examples (RFC 3665) –Message Waiting Indication (RFC 3842)

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Example SIP Phone Bootstrap Process Power on Acquire IP address from DHCP Query DHCP for TFTP or otherwise discover SIP proxy server address Register and authenticate with SIP proxy server Begin making and receiving phone calls

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Number Portability Nirvana The SIP Address of Record (AOR) SIP provides a single user identity, the “public address” –e.g. or User identity maps to any number of devices Hoteling and User Mobility are native to SIP Dual-Mode Mobile Phone PDA Softphone Traditional phone SIP Phone Instant Messaging

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Major Differences between SIP and H.323 SIP can be used for more than telephony and video SIP is text-based; H.323 is binary Tones generated locally, dial plan is on phone Digits are not transmitted to the PBX until the phone completes digit collection based on dial plan SIP clients can be represented by alpha-numeric id’s and passwords SIP users can associate multiple devices with a single AoR

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Enhancing the User Experience

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara The Value of SIP in Communications Enhance the User Experience –Reach the right person, at the right time, on the right device –Select from a wide range of communication devices –Eliminate phone tag, wasted communications –Be mobile and available, but in control of your privacy

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara SIP Simplifies Communication Right person, right time, right device Connect people with people, not with devices Single user identity: SIP Address of Record is mapped across multiple devices ( e.g. or Calls automatically route to the preferred device that is being “used” Dual-Mode Mobile Phone PDA Softphone Traditional phone SIP Phone Instant Messaging

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara SIP Enables Collaboration Example Contact Center Scenario 1. Customer calls Manufacturer’s Rep 2. Rep needs technical answer from expert 3. Rep uses presence to “peek over the cubicle” to see if expert available 5. Rep IM’s the expert - begins to get answers 6. Rep notices expert has ended conversation And has expert join conference with customer 7. Expert answers questions and continues IM chats with the Rep in the background IM IM 4. Expert available online but busy on phone IM IM

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Lowering TCO in the Communications Environment

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara The Value of SIP in Communications Lower TCO –Simplify networks and optimize connectivity –SIP-enable at a low cost –Leverage across multiple applications –Centralize collaboration tools and extend at low-cost –Leverage SIP’s standardized interoperability

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara SIP Simplifies Networks A Single Pipe to the Cloud Service Provider SIP Network Phones Router PSTN Long Distance LAN PBX PSTN Local Access IP Data/Telephony All Communications SIP Trunking Single IP link for voice/data Eliminate PSTN interfaces for long-distance and local access Save 20%+ on toll charges Prepare for future SIP solutions VoIP Today IP Network Phones Router PSTN Long Distance LAN PBX PSTN Local Access TDM IP Data/Telephony Internal Communications External Communications VoIP for internal communications only Separate TDM interfaces required for external communications with partners/suppliers/customers Extra cost, extra hardware, extra complexity

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Leveraging SIP’s Unparalleled Flexibility

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara The Value of SIP in Communications Leverage Unparalleled Flexibility –Mix/match with off-the-shelf applications –Customize with general web skill sets –Leverage solutions from a rapidly-growing eco-system

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Customize with general web skills SIP application development can leverage the hundreds of thousands of web programmers –Not limited to those with specialized CTI skills SIP brings to real-time communications the same powerful set of tools that HTML and web browsers bring to data communications Embed presence and communications into business process

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Use Case: High Value Trading Customer Contact Transform live feeds from around the world on stock and bond movement into Instant Notification and on demand Conference triggers. When thresholds are crossed, proactively communicate with high value clients, alerting the client advisor and offering to bring client and advisor into an immediate conference with the information at hand.

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara Official Convergence Communication Provider for the 2002 and 2006 FIFA World Cup™ FIFA Women’s World Cup USA 2003

August 8-10, 2006 Santa Clara, California Hyatt Regency Santa Clara