Chapter 10 Synchronous Communication

Chapter 10Chapter 10Synchronous Synchronous

CommunicationsCommunications

Learning ObjectivesLearning Objectives

Define the role and function of synchronous Define the role and function of synchronous communication.communication.

Demonstrate how Internet Relay Chat (IRC) works.Demonstrate how Internet Relay Chat (IRC) works.

Explain how instant messaging (IM) clients work and Explain how instant messaging (IM) clients work and identify different IM features.identify different IM features.

Learning ObjectivesLearning Objectives

Explain video conferencing.Explain video conferencing.

Explain how to use Windows Live Messenger for Explain how to use Windows Live Messenger for video chat.video chat.

Describe Voice over Internet Protocol (VoIP) and Describe Voice over Internet Protocol (VoIP) and use a VoIP program to place computer-to-computer use a VoIP program to place computer-to-computer phone calls.phone calls.

Chapter FocusChapter Focus

Internet ChatInternet Chat

Instant MessagingInstant Messaging

Vista Remote AssistanceVista Remote Assistance

Video ConferencingVideo Conferencing

Voice over Internet Protocol (VoIP)Voice over Internet Protocol (VoIP)


Internet Relay Chat (IRC)Internet Relay Chat (IRC)First open Internet protocol that lets people First open Internet protocol that lets people engage in real-time text conversationsengage in real-time text conversationsStill enjoys a large followingStill enjoys a large followingConversations are held in channelsConversations are held in channels

Referred to as chat roomsReferred to as chat roomsChannel operatorsChannel operators

Sees that a channel runs smoothlySees that a channel runs smoothlyCan ban a user for any reasonCan ban a user for any reason

IRC robots or bots used to automate routine IRC robots or bots used to automate routine channel functions often generate the initial channel functions often generate the initial channel informationchannel information


A shareware program mIRC is one of the most A shareware program mIRC is one of the most widely used IRC clients for Windows operating widely used IRC clients for Windows operating systemssystems

Installation is straightforward and only information Installation is straightforward and only information user must enter when logging on to a server user must enter when logging on to a server includes a user name, an e-mail address, desired includes a user name, an e-mail address, desired nickname, and nickname alternativenickname, and nickname alternative

Once mIRC user connets to an IRC server a Once mIRC user connets to an IRC server a dialog box displays list of available channelsdialog box displays list of available channels


IRC channels

Internet Relay Internet Relay Chat (IRC) Chat (IRC) Channel Channel ListingListing


mIRC Options Dialog BoxmIRC Options Dialog Box


mIRC Channel WindowmIRC Channel Window

channelname

number ofparticipants

topic channeloperators

text box for typingcommands and chat

chat area participantnicks


Web-based ChatWeb-based Chat

Allows users to access some IRC networks and Allows users to access some IRC networks and other private networks via a Web browser to other private networks via a Web browser to engage in text-based chat, and sometimes voice engage in text-based chat, and sometimes voice and video chatand video chat

No special software to installNo special software to install

A user can open only one channel at a timeA user can open only one channel at a time

IRC clients can keep multiple channels open IRC clients can keep multiple channels open at the same timeat the same time


Internet Relay Chat Internet Relay Chat (IRC) Channel (IRC) Channel

ListingListing

Web-based Chat Web-based Chat WindowWindow IRC

channels

Internet ChatInternet ChatReviewReview

How does Internet Relay Chat (IRC) work?How does Internet Relay Chat (IRC) work?

Can people connected to different IRC networks Can people connected to different IRC networks carry on conversations?carry on conversations?

What is a channel operator?What is a channel operator?


Resembles IRC in that it uses a client program Resembles IRC in that it uses a client program connected to a server network to enable real-time text connected to a server network to enable real-time text conversationsconversations

Focus of IRCFocus of IRC

Group conversationsGroup conversations

Focus of Instant Messaging (IM)Focus of Instant Messaging (IM)

One-on-one private conversationsOne-on-one private conversations

ICQ and America OnlineICQ and America Online

First to offer IMFirst to offer IM

Now have competition with the largest competitors Now have competition with the largest competitors being Windows Live Messenger and Yahoo! being Windows Live Messenger and Yahoo! MessengerMessenger


Most IM clients can be downloaded as freewareMost IM clients can be downloaded as freewareWindows XP came with a pre-installed instant Windows XP came with a pre-installed instant messaging client called Windows Messenger but messaging client called Windows Messenger but Windows Vista does not include a messaging clientWindows Vista does not include a messaging clientMicrosoft offers the new Windows Live Messenger Microsoft offers the new Windows Live Messenger as a free download for XP and Vista users which is as a free download for XP and Vista users which is meant to replace Windows Messenger on XPmeant to replace Windows Messenger on XPTo be able to start conversations, IM users create To be able to start conversations, IM users create contact lists of friends and acquaintances with contact lists of friends and acquaintances with whom they wish to correspondwhom they wish to correspond

Most IM clients feature a command that can be Most IM clients feature a command that can be used to invite friends to install the client and used to invite friends to install the client and register with the service to carry on conversationsregister with the service to carry on conversations

Windows Live Messenger Windows Live Messenger Conversation WindowConversation Window


conversation

text entryarea

Windows Live Messenger Windows Live Messenger Contact ListContact List


online contact(green)

contactlist

offline contact(red)

Yahoo! Messenger Yahoo! Messenger Invitation WindowInvitation Window


Most enable a user to ignore messages from Most enable a user to ignore messages from anyone he or she wishes to avoidanyone he or she wishes to avoid

DrawbackDrawback

A number of incompatible protocols are in useA number of incompatible protocols are in use

Most IM clients feature graphical emoticons user Most IM clients feature graphical emoticons user can insert into any message to make emotion can insert into any message to make emotion behind a text communication clearerbehind a text communication clearer


online statusoptions

Windows Live MessengerWindows Live MessengerOnline Status OptionsOnline Status Options


Graphical Emoticon Graphical Emoticon Selection in Selection in

Windows Live Windows Live MessengerMessenger


Latest IM client soffer number of synchronous and Latest IM client soffer number of synchronous and asynchronous communication featuresasynchronous communication features

Chat roomsChat rooms

Voice chatVoice chat

WebcamWebcam

File sharingFile sharing

Whiteboard applicationsWhiteboard applications

E-mailE-mail

Phone dialingPhone dialing

Streaming information such asStreaming information such asnews, stock market quotes andnews, stock market quotes andweather informationweather information


Business ApplicationsBusiness Applications

Companies save money by using IM instead of Companies save money by using IM instead of phone callsphone calls

Advantage to traditional telephone helpAdvantage to traditional telephone help

Customer can print a transcript of Customer can print a transcript of conversationconversation

Instant Messages are the target of virusesInstant Messages are the target of viruses

e-Bay Instant Messaging Help Windowe-Bay Instant Messaging Help Window


Instant MessagingInstant MessagingReviewReview

How does instant messaging work?How does instant messaging work?

What precautions should you take when using IM?What precautions should you take when using IM?

What are some of the other features that IM clients What are some of the other features that IM clients offer besides text-based conversation?offer besides text-based conversation?


Windows Vista provides feature called Remote Windows Vista provides feature called Remote AssistanceAssistance

Allows one user to give permission to another Allows one user to give permission to another user to take control of his or her computer via a user to take control of his or her computer via a network or Internet connectionnetwork or Internet connectionComputer user needing help is referred to as the Computer user needing help is referred to as the novice novice User providing help is referred to as the expertUser providing help is referred to as the expertPerson taking control can directly analyze and Person taking control can directly analyze and repair any problems as if he or she were sitting in repair any problems as if he or she were sitting in front of the remote front of the remote User must make sure that the Vista firewall is User must make sure that the Vista firewall is configured to allow Remote Assistanceconfigured to allow Remote Assistance


Requesting Remote Requesting Remote Assistance from Assistance from Windows Live Windows Live MessengerMessenger


Remote AssistanceRemote Assistance

Vista Remote AssistanceVista Remote AssistanceReviewReview

What is a situation where you might ask for Remote What is a situation where you might ask for Remote Assistance?Assistance?

What benefits does Remote Assistance offer over What benefits does Remote Assistance offer over more traditional methods of support, like the more traditional methods of support, like the telephone?telephone?


Sometimes referred to as teleconferencingSometimes referred to as teleconferencing

Employs audio and video technologies to allow two Employs audio and video technologies to allow two or more people to engage in a real-time or more people to engage in a real-time conversationconversation

All parties can see each otherAll parties can see each other

ISDN phone lines are necessary for traditional video ISDN phone lines are necessary for traditional video conferencingconferencing

Billed on a costly per-minute basisBilled on a costly per-minute basis

Windows Live Messenger Video Windows Live Messenger Video ConversationConversation



Internet Protocol (IP) video conferencingInternet Protocol (IP) video conferencing

Advantages over ISDNAdvantages over ISDN

Permits Web collaboration through a single Permits Web collaboration through a single Internet connectionInternet connection

Low cost compared to high connection costs for Low cost compared to high connection costs for dedicated video conference linesdedicated video conference lines

Can work over dial-up connectionsCan work over dial-up connections

But low bandwidth causes poor audio and videoBut low bandwidth causes poor audio and video

Most computers sold today come equipped with Most computers sold today come equipped with sound and video cards, so the only hardware sound and video cards, so the only hardware outlay is purchase of a webcam and a headset outlay is purchase of a webcam and a headset consisting of earphones and built-in microphoneconsisting of earphones and built-in microphone


Many video conferencing packages are targeted to Many video conferencing packages are targeted to commercial userscommercial users

Home and small business users can choose one of Home and small business users can choose one of a number of free video conferencing optionsa number of free video conferencing options

Windows Live MessengerWindows Live Messenger

Yahoo! MessengerYahoo! Messenger

Usually referred to as video conversation or chatUsually referred to as video conversation or chat

In Windows Live Messenger, a video conference In Windows Live Messenger, a video conference can be initiated from the main Messenger window can be initiated from the main Messenger window by right-clicking an online contact and choosing by right-clicking an online contact and choosing Video> Start a Video CallVideo> Start a Video Call


Start aVideo Call

Start a Video Call from the Main Start a Video Call from the Main Messenger WindowMessenger Window


Start aVideo Call

Start a Video Call from the Start a Video Call from the Current ConversationCurrent Conversation


If you are already in a conversation with a If you are already in a conversation with a contact, click the Start or Stop a Video Call button contact, click the Start or Stop a Video Call button on the toolbaron the toolbar

The Video Call feature enables audio as well, so The Video Call feature enables audio as well, so participants can engage in a normal conversation participants can engage in a normal conversation while viewing each otherwhile viewing each other

Video ConferencingVideo ConferencingReviewReview

What is needed in order to have a desktop video What is needed in order to have a desktop video conference?conference?

What advantages does IP video conferencing have What advantages does IP video conferencing have over ISDN video conferencing?over ISDN video conferencing?


Also called IP telephonyAlso called IP telephony

Involves the transmission of voice telephone calls Involves the transmission of voice telephone calls over the Internetover the Internet

Analog audio signals used by ordinary telephone Analog audio signals used by ordinary telephone lines are converted into digital signals that can travel lines are converted into digital signals that can travel across the Internet before being switched back into across the Internet before being switched back into analog signals at the receiving endanalog signals at the receiving end

VoIP VoIP Connection Connection MethodsMethods

Voice over Internet Voice over Internet Protocol (VoIP)Protocol (VoIP)


Sound quality, echoing, and frequent drop-outs has Sound quality, echoing, and frequent drop-outs has improved to point of superior sound quality improved to point of superior sound quality compared to regular telephone servicecompared to regular telephone service

Cheaper than regular phone calls handled by Cheaper than regular phone calls handled by traditional telephone service providerstraditional telephone service providers

Normal telephones can be used for VoIP calls by Normal telephones can be used for VoIP calls by connecting them to an analog telephone adaptor connecting them to an analog telephone adaptor (ATA) that converts analog signals to digital signals(ATA) that converts analog signals to digital signals


VoIP service providers like Vonage, AT&T, and VoIP service providers like Vonage, AT&T, and others usually charge a flat rate for calls within the others usually charge a flat rate for calls within the United States and Canada, and very competitive United States and Canada, and very competitive per-minute rates for calls to other countriesper-minute rates for calls to other countries

If an ATA adaptor is connected to a computer that is If an ATA adaptor is connected to a computer that is connected to the Internet, no special software is connected to the Internet, no special software is required because the adaptor communicates directly required because the adaptor communicates directly with a VoIP serverwith a VoIP server


VoIP Service Provider VoIP Service Provider Service PlanService Plan


IP phones, sometimes called hardphones, contain IP phones, sometimes called hardphones, contain ATA hardware and plug directly into an Internet ATA hardware and plug directly into an Internet connectionconnection

If an IP phone is plugged into a computer that is If an IP phone is plugged into a computer that is connected to the Internet, no special software is connected to the Internet, no special software is required as the IP phone communicates directly required as the IP phone communicates directly with a VoIP serverwith a VoIP server


Computer-to-computer VoIP connections use Computer-to-computer VoIP connections use software to make calls from one computer to software to make calls from one computer to another computer, from a computer to a regular another computer, from a computer to a regular telephone, or to an IP phonetelephone, or to an IP phone

Computers used for VoIP need a full-duplex Computers used for VoIP need a full-duplex sound card so users can talk and hear at the sound card so users can talk and hear at the same timesame time

Computer-to-computer VoIP users can speak and Computer-to-computer VoIP users can speak and hear using a microphone and speakers or a hear using a microphone and speakers or a headsetheadset


Computer-to-computer VoIP software features a Computer-to-computer VoIP software features a softphone, a screen-based GUI interface that softphone, a screen-based GUI interface that emulates a telephone or telephone features emulates a telephone or telephone features

Skype, available as freeware, is one of the Skype, available as freeware, is one of the most popular computer VoIP programs in most popular computer VoIP programs in current usecurrent use

Can be used to make computer-to-computer Can be used to make computer-to-computer VoIP calls anywhere in the world free of VoIP calls anywhere in the world free of chargecharge

Skype Softphone Skype Softphone InterfaceInterface


Skype Contact Skype Contact ListList

Voice over Internet Protocol (VoIP) Voice over Internet Protocol (VoIP) ReviewReview

What is VoIP, and how does it work?What is VoIP, and how does it work?

What are the different methods that can be used to What are the different methods that can be used to make VoIP telephone calls?make VoIP telephone calls?

What is a softphone?What is a softphone?

Chapter 10 Synchronous Communication

Technology

Transcript of Chapter 10 Synchronous Communication