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Multimedia

Various Applications

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Contents

• E-mail, MM-Mail and Internet Fax

• Voice Response Systems

• Computer Messaging Services

• A/V Streaming

• Video On Demand (VOD)

• Video/Multimedia Conferencing

• Virtual Reality (VR)

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Had enough of S-mail!?

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Multimedia Mail Scenario

CommercialE-Mail “Cloud”

Service

E-Mail to Voice

ProtocolConversion

Phone Booth

Wide Area NetworksMac

UnixBased

System

Remote Mainframe

Local Network – PC

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E-mail – Killer Application!?

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Multimedia Mail

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Multimedia Mail Challenges

• Incorporate Generators/Viewers

• Massive Storage Space

• Different Standards – Interoperability– different media formats

– different platforms

– different protocols

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MIME Overview

• MIME (Multipurpose Internet Mail Extension):

– Unlimited Text Line Length or Overall Length

– Character Sets other than ASCII

– Binary or Application Specific Files

– Multiple Objects in a Single Message

– Images, Audio, Video Attachments

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• Need to identify the type of media data in a data stream in a platform-independent way.

• Originally designed to allow inclusion of data other than text in email, adopted by HTTP.

• Content-type: type/subtype.

• Types include text, image, audio, video, application, subtypes define specific formats.

– e.g. text/html, image/gif

MIME Types

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Example MIME Types

Text• example subtypes: plain, html

Image• example subtypes: jpeg, gif

Audio• example subtypes: basic (8-bit mu-law encoded), 32kadpcm (32 kbps coding)

Video• example subtypes: mpeg, quicktime

Application• other data that must be

processed by reader before “viewable”

• example subtypes: msword, octet-stream

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Six top-level MIME types and some common subtypes

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Mail message format

step: protocol for exchanging email messages

RFC 822: standard for text message format:

• header lines, e.g.,– To:– From:– Subject:different from SMTP

commands!• body

– the “message”, ASCII characters only

• line containing only `.’

header

body

.

blankline

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Message format: multimedia extensions

• MIME: multimedia mail extensions, RFC 2045, 2056• Additional lines in message header declare MIME

content type.

From: alice@crepes.fr To: bob@hamburger.edu Subject: Picture of yummy crepe. MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Type: image/jpeg

base64 encoded data ..... ......................... ......base64 encoded data .

multimedia data

type, subtype, parameter

declaration

method usedto encode data

MIME version

encoded data

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Mail Types

• Compound Mail– Includes text, graphics and/or images

– All attachments are printable

• Multimedia Mail– Explicit Inclusion – all media included

– Implicit Inclusion – only links to media

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ManagementServer

MessagingServer

Internet Desktop Fax Service

Telephony Server & PSTN Gateway

NSP

REGION BREGION B

REGION AREGION A

REGION CREGION C

..

..

..

INTERNETINTERNET

Point to point Broadcast

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Example: Desktop Fax Service: Netcentric User Interfaces

Web BrowserWeb Browser PC ClientPC Client

SendSend

StatusStatus

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Why use Voice Response Systems?

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Voice Response Systems

Integrated Computer-Assisted Voice Response SystemIntegrated Computer-Assisted Voice Response System

ICA-VRSICA-VRS

Demo: Kolnoaphone.wav

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Model of Voice Response System

UsersOffice

Central computer

data

System computer

Management

reportsFax

Phone

Voice Response Hardware

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Voice Response System – Hardware

• A/D – D/A Conversion

• Audio Compression

• Multi-line Phone Interfaces

• Tones Recognition

• Fax Interface

• Voice Recognition

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Enabled Solution: Intelligent Answering

Application Host

Telephone System

“Hello…”

Sales

Service

Marketing

• Improved Productivity

• Reduced Cost

• Enhanced Service

• Enhanced Workflow

Calling Number

Called Number

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Enabled Solution: Computer Assisted Dialing

ApplicationHost

TelephoneSystem

Customer Service

Marketing

Collections

• Efficient Call Processing

• Improved Productivity

• Increased Revenue

Office

Home

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Computer Messaging Services

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Messaging and e-Learning

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Personal Assistance Services

• Single Number Service (SNS)

• Single computerized address book

• Single message box (email, voice message, fax, beeper)

• Voice Activated Dialing (VAD)

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Single Access to all Services

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Messaging Models

• Integrated Messaging

• Unified Messaging

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Telephone SystemE-Mail System

Integrated Messaging

• All messages are copied to the E-Mail system and vice versa.

• Gives instant access from either the PC or the phone.

• Increase network traffic between the two systems.

Storage Storage

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Unified Messaging

Telephone SystemE-Mail System

• All the messages reside in the same place.

• Simplifies system and data management.

• Phone access may be slower.

Storage

Store

Retrieve

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Unified Messaging Characteristics

• Unified Mailbox for– Voice

– Fax

– E-mail

• Translators – E-mail to Speech

– Fax to E-mail

– etc.

• Address Book– unique for all types– immediate forward of

messages

• Web based– easy to use– activate from any PC

• E-mail notification

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Example of usingweb-browser

for voice messages

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Summary: Unified vs. Integrated Messaging

Unified Messaging Integrated Messaging

Possible delays in accessingmessages from the phone

Instant access to all messages fromthe phone

All data resides in one place Data is replicated between voice andE-mail boxes

When E-mail system is down,voice mail is not accessible

When E-mail system is down, voicemail is still accessible

Voice mail system is simplifiedto be a telephony server;no message store required

Voice mail system is more complex -includes a message store

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Additional Messaging Applications

• Instant Messaging & Presence (IM&P)– IM: ICQ, AOL Instant Messenger, Yahoo Messenger,

MSN Messenger– P: SIP/SIMPLE, Jabber/XMPP

• Wireless/Mobile Internet– WAP1 (Wireless Application Protocol) & WML (Wireless

Markup Language)– WAP2 & XHTML – SMS (Short Messaging Services) & MMS (Multimedia

Messaging Services)• Interactive TV

– Digital TV– Internet TV

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Mobile IM&P

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Mobile Searching in Google

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Car MM Display

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MyFord Touch Navigation (1)

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MyFord Touch Navigation (2)