SIP-based Application Development

SIP-based Application Development

SIP International 2004

Agenda

• Enterprise Applications • Traditional Telephony Apps • OracleAS Solution • Solution Architecture • Architecture Benefits • Click-to-Dial: Flow & Demo • Other Flows (Call Center, Voicemail, PBX) • A Case Study • Conferencing App Flow • Value Proposal of Architecture • Summary

Enterprise Telephony Apps– Phone-accessed applications– Access enterprise back-ends– Have call control capabilities (make a call, auto-answer)

Sample Apps– Call Centers / Customer Support– IVRs: Corporate Directory– Unified Messaging– Conferencing– IP PBX– Next-Gen Telephony Apps

• Click to Dial• Notification Services• Personal Assistant

Johnny Wong – Oracle Corporation

Enterprise Applications

Traditional Telephony AppsProblem• Hardware-based deployment

• Dialogic Cards• Expensive

• Hard to integrate with other sub-systems• Email, LDAP server

• Requires very specialized knowledge

Solution: Bring Development to Web Application Server Model• Based on standard software and commodity hardware• Easy to integrate with other systems• Widespread web application development knowledge

• OracleAS Solution• SIP Servlet container controlled from OracleAS:

• Controlled and exposed with Web Service interfaces• Provides Call Control Functionality

• 3PCC & Bridging / Routing a Call• Voice (IVR) provided by third-party VXML gateway

• OracleAS serves up .VXML pages to VXML gateway• Conferencing Functionality provided by Media Server

• OracleAS connects via SIP• Web UI available via regular means (.JSPs)

OracleAS Solution

TelephonyBackend

(SIP container)

Telephony

VXMLbrowser

MCS Applications(Call Center, Vmail,PBX apps, iMeeting,

IVR, Voice Apps)(X+X / JSP / WS)

OracleASDrivers Drivers

TelephonyResources

(PBX, PSTN,VoIP phones) Other Resources

Ie. Email StoreMediaServer

SIP phones

PBX phones PBX

PSTNphones

SIPGateway

-SIP

Proxy

SIPServlet

Container

Telephony

SIP

SIP

VXMLbrowser

MCS

Applications(Call Center,PBX, IVR,

Voice Apps)(X+X / JSP / WS)

RTP

RTP

VXML

WS/SOAP

10gDB

SIP MediaServer

(conferencing)

Other resources

Telephony resource

OracleAS Telephony Platform

Application components

Application Resources RTP (Voice data Traffic)

OracleAS

Drivers Drivers

SIP

Solution Architecture

• Inexpensive: • no need for Call Routing/Media HW• Use OracleAS & VXML browser

• Easy to Develop, Integrate, Customize and Extend• Apps written as JSPs, EJBs, Web Services (instead of C or

proprietary switch interfaces)• Development Community readily available

• Standards-based: • SIP, J2EE, VXML, XHTML + XForms, Web Services• No vendor lock-in.

• IP-based approach: • VoIP through SIP


Architecture Benefits

TelephonyBackend

(SIP container)

Telephony

VXMLbrowser




TelephonyResources



Alice’s PDA

OracleAS Click-to-DialApp

WS/SOAP

SIP

RTP

Alice’sPhone

(throughGateway)

HTML/HTTP

SIP

Bob’sPhone

(throughGateway)

Click-to-Dial: Flow

Demo (time permitting)

RTP Media Session

SIP (w. app URL)SIP

VXML

Web Service/SOAP

Customer PSTN phoneThrough SIP

Gateway

VXMLbrowser

Customer Rep

phone

Call CenterScreen Pop

Software

Call CenterApp

App Specific

SIP (disconnect)SIP (switch)

SIP (connect)

RTP Media Session

App SpecificWeb Service/SOAP

SIP (disconnect)

SIP (connect, URL)

RTP Media Session

OracleAS

Call Center App: Flow

RTP (Leaves the voicemail)

SIP

VXML

Alice’sPhone

SIP-

PBXgateway

VXMLbrowser

Bob’sPBX

PhoneEmailStore

No Answer(timeout)

SIP (w. URL)

App Specific

RTP (listen to vmail)

VXML

Voicemail AppPBX OracleAS

SIP

App Specific

SIP (w. URL)

Voicemail: Flow

RTP (Get the extension #)

SIP

VXML

Alice’sSIP

Phone

SIP-

PSTNgateway

VXMLbrowser

Charles’PSTNPhone

PBX App

Bob’sSIP

Phone

SIP (w. URL)

Xfer call to Bob (SIP Phone specific)

Web Service/SOAP

SIP (disconnect)SIP (connect)

RTP

Web Service/SOAP

SIP (connect)

SIP (disconnect)

SIP (switch)

SIP (switch

RTP

PBX: FlowOracleAS

• Oracle’s Application Server & Conferencing System

• App Server with Telephony Support– XHTML / XForms, Web Services, Database

• Conferencing Application– 40K employees across the world– Reuse company’s IT infrastructure:

• SIP gateways, PBX systems, VXML platforms, IP Phones

– Solution Implemented within 3 months with 2 engineers

• Brazilian Pilot set to start in February


A Case Study

• Conference Bridge – Event Flow


SIP ServletContainer

VXMLbrowser

ConferenceApp

(JSPs)

MCSWeb Server

PSTN Gateway

MediaServer

PSTNphone

WS

XHTML

VXML

Telephony SignallingVoice StreamApplication Communication

Conferencing App Flow

OracleAS

Value Proposal of Architecture

PBXphones

Intel’s CT ConnectCISCO ICM

GenesysAspect

PBX

Interaction Center Apps

Agent ClientSoftwareCall

RoutingMiddlewareAbstractor Avaya IVR

CT Media Server

Voicemail & Fax App

(Java classes /C functions)

Email StoreS.100 (C code)

JTAPI (Java)

DialogicCards

iMeetingConferenceRecording

VXML browser Oracle 9iASW Voice & WirelessApplications

SIPProxyServer

SIP-

PBXGW

SIPphones

Go From All This:

To This:

TelephonyBackend

(SIP container)

Telephony

VXMLbrowser




TelephonyResources



• OracleAS provides Telephony Development– Integrated with Web Development– Promotes Channel Convergence

• Knowledge Reuse, Open-Standards, Interoperability, Infrastructure Reuse– XHTML/XForms or VXML / Web Services / SIP– Large Development Community / No specialized

knowledge– No vendor lock-in– Reuse hardware infrastructure (gateways) &

software (web servers)• Simple Flows & Applications Already Developed• Ready with next version of OracleAS


Summary

Q U E S T I O N S

A N S W E R S&

Johnny Wong

[email protected]

Principal Member of Technical Staff

Wireless, Voice & Telephony

Oracle Corporation

mailto:[email protected]

SIP-based Application Development

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