video conferencing
Content
TELECOMMUNICATION & NETWORKING Session 2007 /2008 (II)
SPM1012
DESKTOP & VIDEO COFERENCING
Introduction to desktop conferencing Basic requirements : hardware The technology : CODEC & Plug-in General uses of desktop conferencing Others related discussion
DESKTOP COFERENCING
Videoconferencing is transmission & synchronized of a series of image (video) & speech back & forth between two or more different locations, simulating and exchange as if the two (or more) participants were in the same physical conversation
DESKTOP COFERENCING
Introduced a few years ago Uses computer hardware & software Real-time communication (in the same time) Primary users are businesses & educational institutions (& much more) Components are simply incremental & improvements of existing technologies
DESKTOP COFERENCING
Basic hardware
Web cam Display unit (monitor) Audio component (Speaker / Microphone / Headphone)
Try to find out this hardware picture through google
DESKTOP COFERENCING
CODEC : Compression / Decompression
DESKTOP COFERENCING
CODEC : Compression / Decompression
Hardware that can convert audio or video signals between analog and digital forms (coder/decoder) Hardware or software that can compress & decompress audio or video data (compression/decompression) Compress (1mb 552kb)
DESKTOP COFERENCING
CODEC : Compression / Decompression
The combination of coder/decoder & compression/decompression. Generally, a codec compresses uncompressed digital data so that the data uses less memory.
(What means by compresses uncompressed data?)
DESKTOP COFERENCING
CODEC : Compression / Decompression • A video codec is a device or software that enables video compression and or decompression for digital video. • The compression usually employs lossy data compression.
DESKTOP COFERENCING
CODEC : Compression / Decompression
User interface Supporting systems • Networking • Bandwidth / Broadband
DESKTOP COFERENCING (DC)
Mode of VC/DC
One-to-one
DESKTOP COFERENCING
Mode of VC/DC
One-to-many
DESKTOP COFERENCING
Mode of VC/DC
Group-to-group
DESKTOP COFERENCING
Mode of VC/DC
Multipoint
DESKTOP COFERENCING
Use of VC?
List out as many possible the using of VC / DC
Tell US via e-learning forum
DESKTOP COFERENCING
PERFORMANCE PARAMETERS The quality of desktop conferencing depend on :
Audio & Video Quality Hardware Data Sharing Capability Software Installation Time Number of Users Bandwidth (Broadband vs dial-up?)
DESKTOP COFERENCING
Technology S-Curve Natural Limit
Bandwidth (Better in cabling & connection, higher transfer rate, capacity) Processor Speeds (Dual-core, dual-processor)
Natural Limit
Data Sharing Capability Current state of the technology
Time
DESKTOP COFERENCING
Innovation Type and Factors
R&D in Hardware & Software Technology push (eg : Push to Talk tech.) / (Press a button to start DC) Improving computer technology (more power, better speeds, & larger memory) Telecommunication companies are conducting a lot of research on voice/video over IP networks (Internet 2, IPV 6, optical cable)
DESKTOP COFERENCING
Innovation Factors
Larger and cheaper bandwidth available due to the deployment of Frame Relays, ATMs over Optical Fibers etc. * ATM : (Asynchronous Transfer Mode is a cell relay, packet switching network and data link layer protocol which encodes data traffic into small (53 bytes; 48 bytes of data and 5 bytes of header information) fixed-sized cells).
DESKTOP COFERENCING
Innovation Factors
Market Pull Cheap Ease of use Easily upgradeable since software controlled Technologies relating to computer speeds and communication line capacities and reliability are improving
DESKTOP COFERENCING
Current Status
New technology in the linear growth region of the S-curve graph beginning to diffuse into small and home office markets Security and reliability are primary issues Easy to install, learn & train
DESKTOP COFERENCING
FUTURE STATUS
Newer version of the Internet with IPv6 protocol* is coming which will – have priorities for voice & video over data – provide better security, reliability & quality of service – speeds & power of desktop computers are improving at enormous rate This might make the Internet corporate backbone for medium and small size businesses * Internet Protocol Version 6
DESKTOP COFERENCING
FUTURE STATUS
Bigger bandwidth pipes such as GigaPOP will be deployed for the Internet services (eg : broadband) More people are becoming computer literate Price of DTVC systems is further dropping due to improved technology and fierce competition All these factors are making the position of DTVC in the market a lot better
DESKTOP COFERENCING
SELECTION CRITERIA
Enabling multi-modal collaboration Cost - reasonable and/or justifiable (high quality on low price) Small footprint (meeting on your PC) Ease of implementation Support considerations
DESKTOP COFERENCING
BASIC TECHNOLOGY USED TO ENABLE DTVC
Video, audio, & data communication - not new or revolutionary Combination of the technologies, their development for use in synchronous communication, the lowering of development costs & price, & the identification of viable markets for their use combine to create a burgeoning industry for the turn of the century
DESKTOP COFERENCING
GROWTH OF VIDEO CONFERENCING
Since 1989 - videoconferencing market has been growing at a rate of 50 to 100% / year. & is expected to double again before 2001 Many believe that the market for videoconferencing systems & services will grow about 38.3% overall between 1997 & 2003
(This from economic perspective)
DESKTOP COFERENCING
GROWTH OF VIDEO CONFERENCING
The cost that companies will spend on distance learning is expected to increase by the year 2000 Reduces travel costs by executives, benefits sales of products & communications between buyers & suppliers, performs high quality training, real time delivery of presentations, less travel cost, learning new skills with minimal disruption to productivity & personal lives
DESKTOP COFERENCING
FUTURE POPULARITY OF VIDEO CONF.
Capability to eventually be used in daily activities Year 2002 - BW that can support videoconferencing & other various transmissions should be available
DESKTOP COFERENCING
CURRENT APLLICATION
Higher Education - distance learning & group collaboration Business - videoconferencing, training, CE/NPD teams, technical troubleshooting, job interviews, priority customer access, CRM Other - telecommuting, telemedicine, courts (arraignment, testimony, etc,), surveillance, CCTV Individuals - “grandma phone”
DESKTOP COFERENCING
Distributions CHANNELS (SOFTWARE)
Download from Internet Packaged with other software Bundled with hardware (cameras) Purchase at retail store Already loaded on pc
DESKTOP COFERENCING
DISRIBUTION CHANNEL (HARDWARE)
Purchase at retail store Commercial websites Packaged with personal computer / laptop / device
DESKTOP COFERENCING
TECHNOLOGY LIMITATION
Jerky video Only 1 to 1 audio & video Poor transmission over POTS Absence of body language Absence of informal communication Security concerns (hack of the network) Color (use 32bit to get quality of video but effected on bandwidth usage)
DESKTOP COFERENCING
SOFTWARE BENCHMARKING
Software Internet Conference 2.0 Pro Netscape Conference 4.0 Microsoft NetMeeting WhitePine CuSeeMe Ease of Use Communication Whiteboard Document Sharing Total Competitive Advantage Fast Document Collaboration Multi-Platform Price and Multifunction Multi-person video/audio
0 0 + 0
+ +
+ 0 0 +
0 0 -
0 -1 2 1
DESKTOP COFERENCING
HARDWARE BENCHMARKING
Camera Connectix Quick Cam VC
Digital Vision -
Cost $129
Software
Image
Capture Rate
Features
Setup
Total
+
$349
0 0 + + + 0 0 0
0 + + 0 -
0 0 0 0 + 0
0 0 0 0 0 -
0 0 0 + + 0 0
-1 -2 0 +3 +3 -2 -1 -3
InVideo Conference Intel - Create and Share Camera Kodak DVC 323 Silicon Vision - iVision iCam VideoLab Planetview Vista Imaging - ViCam Winnov VideumCam
$145 329
0
$169
+
$239
0
$529
$199
0
$299
-
DESKTOP COFERENCING
BUSINESS RISK OF VIDEOCONFERENCING
Management’s GOALS for video conferencing must be clearly defined to determine appropriate videoconferencing applications. Increase productivity through real-time interaction between team members, specialists, and management.
DESKTOP COFERENCING
BUSINESS RISK OF VIDEOCONFERENCING
Reduce costing & timing of traveling by holding minor meetings via videoconferencing. A reduction in travel time translates into more time in the office to work on projects.
Time is $$$$$
DESKTOP COFERENCING
BUSINESS RISK OF VIDEOCONFERENCING
Reduce long distance charges by leveraging the corporate WAN for communication needs. Slow computer response time / bandwidth limitation can actually make videoconferencing processes longer than non-automated processes. How will the videoconferencing applications interact with existing systems?
DESKTOP COFERENCING
VIDEOCONFERENCING EXPENSES FALL INTO THREE MAIN CATEGORIES
Hardware • PC Connected to a Local Area Network • Desktop Video Camera • Microphone and Speakers Service and maintenance • IT expenses associated with maintaining equipment • Offering enough bandwidth for the application
DESKTOP COFERENCING
INVESTMENT JUSTIFICATION
Economics Perspective • Savings as of result of reduced air travel • Savings in long distance charges
DESKTOP COFERENCING
INVESTMENT JUSTIFICATION
Soft-dollar economics • Soft-dollar economics include productivity boosts resulting from increased communication among employees and work teams. • You can use the money that you spent on traveling while in meeting to boost up your business performance.
DESKTOP COFERENCING
INVESTMENT JUSTIFICATION
Soft-dollar economics • Taking the individual's salary and multiplying it by the time spent traveling to and attending a meeting. We estimate that each offsite meeting costs an average of RM125 per hour (including salary, airfare, meals, and lodging) for each hour the employee is "unavailable / not at office“. Thus, a meeting that takes two and half days costs the company RM2500.
DESKTOP COFERENCING
Network and Networking Components
The ABC Company (Designs & manufactures Widgets -- What did you expect?) • Corporate HQ in Cyberjaya • Branch Office in KL & Penang • Branch in JB
DESKTOP COFERENCING
Network and Network Components
Network Equipment already in place The corporate WAN consists of T-1 leased lines with dynamic & fixed bandwidth allocation capability. Each T-1 consists of twenty-four 64K channels (24*64k in transfer rate)
(T-1 ? Please refer to cabling discussion)
DESKTOP COFERENCING
Network and Network Components
Each channel is capable of carrying 56K of data with 8K of overhead Channels can be dynamically allocated for conference setup & break down. This occurs when a conference is a scheduled event and the LiveLAN system is to be used.
DESKTOP COFERENCING
Network and Network Components • Processor : Higher in processor hertz, GHz) • 10/100 Mb Ethernet at each location
DESKTOP COFERENCING
Network and Network Components • Each LAN is a Microsoft NT Network • All locations have PRI connectivity to the Internet
DESKTOP COFERENCING
EQUIPMENT COST
One LiveLAN System at each location • Setup in a small board room for scheduled conferencing and small group interaction at each location. • Cost RM1200 / location for equipment. RM1000 / location for board room furniture. • Total RM2200 * 4 locations = RM8800
DESKTOP COFERENCING
EQUIPMENT COST : LiveLAN
LiveLAN is a TCP/IP-based visual collaboration solution for your Windows desktop. LiveLAN brings all the benefits and enhanced communications of full-motion & full-screen videoconferencing to your network.
DESKTOP COFERENCING
EQUIPMENT COST : LiveLAN
By installing the bundled of camera, audio and video codec card, speakers & microphone, you'll have the most in visual collaboration capabilities on your corporate LAN/intranet.
DESKTOP COFERENCING
EQUIPMENT COST : LiveLAN
Because LiveLAN is a hardware-assisted solution, CPU utilization is low. Therefore, unlike software-only videoconferencing products, LiveLAN maintains its frame rate and video quality when other applications are run at the same time.
DESKTOP COFERENCING
EQUIPMENT COST
Intel Desktop Conferencing System • Setup on desktop of team members for everyday interaction between locations and departments. • Cost RM70 * 10 for each location • Total RM700 * 4 locations = RM2800 Total Investment in Hardware
RM11,600
DESKTOP COFERENCING
LINE COST
It is estimated that each location will use the LiveLAN System an average of 20 hours per week. Four 64K circuits are allocated to the LiveLAN system for scheduled conferencing • • • • On average each circuit costs RM3 / hour (4 circuits * RM3/hour) * 20 hours/week Equals RM240 / week for line expenses Average of RM12,480/year on line expenses.
DESKTOP COFERENCING
LINE COST
The desktop systems utilize the internet connection and are used on a less formal basis for everyday communication between work group members.
DESKTOP COFERENCING
E-Learning Discussion
What the differences between Desktop Conferencing & Video Conferencing • The similarities (Hardware | Software | Transfer rate) • The differences (Hardware | Software | Transfer rate)
Get your extra mark on your OWN work
SPM1012
DESKTOP & VIDEO COFERENCING
Introduction to desktop conferencing Basic requirements : hardware The technology : CODEC & Plug-in General uses of desktop conferencing Others related discussion
DESKTOP COFERENCING
Videoconferencing is transmission & synchronized of a series of image (video) & speech back & forth between two or more different locations, simulating and exchange as if the two (or more) participants were in the same physical conversation
DESKTOP COFERENCING
Introduced a few years ago Uses computer hardware & software Real-time communication (in the same time) Primary users are businesses & educational institutions (& much more) Components are simply incremental & improvements of existing technologies
DESKTOP COFERENCING
Basic hardware
Web cam Display unit (monitor) Audio component (Speaker / Microphone / Headphone)
Try to find out this hardware picture through google
DESKTOP COFERENCING
CODEC : Compression / Decompression
DESKTOP COFERENCING
CODEC : Compression / Decompression
Hardware that can convert audio or video signals between analog and digital forms (coder/decoder) Hardware or software that can compress & decompress audio or video data (compression/decompression) Compress (1mb 552kb)
DESKTOP COFERENCING
CODEC : Compression / Decompression
The combination of coder/decoder & compression/decompression. Generally, a codec compresses uncompressed digital data so that the data uses less memory.
(What means by compresses uncompressed data?)
DESKTOP COFERENCING
CODEC : Compression / Decompression • A video codec is a device or software that enables video compression and or decompression for digital video. • The compression usually employs lossy data compression.
DESKTOP COFERENCING
CODEC : Compression / Decompression
User interface Supporting systems • Networking • Bandwidth / Broadband
DESKTOP COFERENCING (DC)
Mode of VC/DC
One-to-one
DESKTOP COFERENCING
Mode of VC/DC
One-to-many
DESKTOP COFERENCING
Mode of VC/DC
Group-to-group
DESKTOP COFERENCING
Mode of VC/DC
Multipoint
DESKTOP COFERENCING
Use of VC?
List out as many possible the using of VC / DC
Tell US via e-learning forum
DESKTOP COFERENCING
PERFORMANCE PARAMETERS The quality of desktop conferencing depend on :
Audio & Video Quality Hardware Data Sharing Capability Software Installation Time Number of Users Bandwidth (Broadband vs dial-up?)
DESKTOP COFERENCING
Technology S-Curve Natural Limit
Bandwidth (Better in cabling & connection, higher transfer rate, capacity) Processor Speeds (Dual-core, dual-processor)
Natural Limit
Data Sharing Capability Current state of the technology
Time
DESKTOP COFERENCING
Innovation Type and Factors
R&D in Hardware & Software Technology push (eg : Push to Talk tech.) / (Press a button to start DC) Improving computer technology (more power, better speeds, & larger memory) Telecommunication companies are conducting a lot of research on voice/video over IP networks (Internet 2, IPV 6, optical cable)
DESKTOP COFERENCING
Innovation Factors
Larger and cheaper bandwidth available due to the deployment of Frame Relays, ATMs over Optical Fibers etc. * ATM : (Asynchronous Transfer Mode is a cell relay, packet switching network and data link layer protocol which encodes data traffic into small (53 bytes; 48 bytes of data and 5 bytes of header information) fixed-sized cells).
DESKTOP COFERENCING
Innovation Factors
Market Pull Cheap Ease of use Easily upgradeable since software controlled Technologies relating to computer speeds and communication line capacities and reliability are improving
DESKTOP COFERENCING
Current Status
New technology in the linear growth region of the S-curve graph beginning to diffuse into small and home office markets Security and reliability are primary issues Easy to install, learn & train
DESKTOP COFERENCING
FUTURE STATUS
Newer version of the Internet with IPv6 protocol* is coming which will – have priorities for voice & video over data – provide better security, reliability & quality of service – speeds & power of desktop computers are improving at enormous rate This might make the Internet corporate backbone for medium and small size businesses * Internet Protocol Version 6
DESKTOP COFERENCING
FUTURE STATUS
Bigger bandwidth pipes such as GigaPOP will be deployed for the Internet services (eg : broadband) More people are becoming computer literate Price of DTVC systems is further dropping due to improved technology and fierce competition All these factors are making the position of DTVC in the market a lot better
DESKTOP COFERENCING
SELECTION CRITERIA
Enabling multi-modal collaboration Cost - reasonable and/or justifiable (high quality on low price) Small footprint (meeting on your PC) Ease of implementation Support considerations
DESKTOP COFERENCING
BASIC TECHNOLOGY USED TO ENABLE DTVC
Video, audio, & data communication - not new or revolutionary Combination of the technologies, their development for use in synchronous communication, the lowering of development costs & price, & the identification of viable markets for their use combine to create a burgeoning industry for the turn of the century
DESKTOP COFERENCING
GROWTH OF VIDEO CONFERENCING
Since 1989 - videoconferencing market has been growing at a rate of 50 to 100% / year. & is expected to double again before 2001 Many believe that the market for videoconferencing systems & services will grow about 38.3% overall between 1997 & 2003
(This from economic perspective)
DESKTOP COFERENCING
GROWTH OF VIDEO CONFERENCING
The cost that companies will spend on distance learning is expected to increase by the year 2000 Reduces travel costs by executives, benefits sales of products & communications between buyers & suppliers, performs high quality training, real time delivery of presentations, less travel cost, learning new skills with minimal disruption to productivity & personal lives
DESKTOP COFERENCING
FUTURE POPULARITY OF VIDEO CONF.
Capability to eventually be used in daily activities Year 2002 - BW that can support videoconferencing & other various transmissions should be available
DESKTOP COFERENCING
CURRENT APLLICATION
Higher Education - distance learning & group collaboration Business - videoconferencing, training, CE/NPD teams, technical troubleshooting, job interviews, priority customer access, CRM Other - telecommuting, telemedicine, courts (arraignment, testimony, etc,), surveillance, CCTV Individuals - “grandma phone”
DESKTOP COFERENCING
Distributions CHANNELS (SOFTWARE)
Download from Internet Packaged with other software Bundled with hardware (cameras) Purchase at retail store Already loaded on pc
DESKTOP COFERENCING
DISRIBUTION CHANNEL (HARDWARE)
Purchase at retail store Commercial websites Packaged with personal computer / laptop / device
DESKTOP COFERENCING
TECHNOLOGY LIMITATION
Jerky video Only 1 to 1 audio & video Poor transmission over POTS Absence of body language Absence of informal communication Security concerns (hack of the network) Color (use 32bit to get quality of video but effected on bandwidth usage)
DESKTOP COFERENCING
SOFTWARE BENCHMARKING
Software Internet Conference 2.0 Pro Netscape Conference 4.0 Microsoft NetMeeting WhitePine CuSeeMe Ease of Use Communication Whiteboard Document Sharing Total Competitive Advantage Fast Document Collaboration Multi-Platform Price and Multifunction Multi-person video/audio
0 0 + 0
+ +
+ 0 0 +
0 0 -
0 -1 2 1
DESKTOP COFERENCING
HARDWARE BENCHMARKING
Camera Connectix Quick Cam VC
Digital Vision -
Cost $129
Software
Image
Capture Rate
Features
Setup
Total
+
$349
0 0 + + + 0 0 0
0 + + 0 -
0 0 0 0 + 0
0 0 0 0 0 -
0 0 0 + + 0 0
-1 -2 0 +3 +3 -2 -1 -3
InVideo Conference Intel - Create and Share Camera Kodak DVC 323 Silicon Vision - iVision iCam VideoLab Planetview Vista Imaging - ViCam Winnov VideumCam
$145 329
0
$169
+
$239
0
$529
$199
0
$299
-
DESKTOP COFERENCING
BUSINESS RISK OF VIDEOCONFERENCING
Management’s GOALS for video conferencing must be clearly defined to determine appropriate videoconferencing applications. Increase productivity through real-time interaction between team members, specialists, and management.
DESKTOP COFERENCING
BUSINESS RISK OF VIDEOCONFERENCING
Reduce costing & timing of traveling by holding minor meetings via videoconferencing. A reduction in travel time translates into more time in the office to work on projects.
Time is $$$$$
DESKTOP COFERENCING
BUSINESS RISK OF VIDEOCONFERENCING
Reduce long distance charges by leveraging the corporate WAN for communication needs. Slow computer response time / bandwidth limitation can actually make videoconferencing processes longer than non-automated processes. How will the videoconferencing applications interact with existing systems?
DESKTOP COFERENCING
VIDEOCONFERENCING EXPENSES FALL INTO THREE MAIN CATEGORIES
Hardware • PC Connected to a Local Area Network • Desktop Video Camera • Microphone and Speakers Service and maintenance • IT expenses associated with maintaining equipment • Offering enough bandwidth for the application
DESKTOP COFERENCING
INVESTMENT JUSTIFICATION
Economics Perspective • Savings as of result of reduced air travel • Savings in long distance charges
DESKTOP COFERENCING
INVESTMENT JUSTIFICATION
Soft-dollar economics • Soft-dollar economics include productivity boosts resulting from increased communication among employees and work teams. • You can use the money that you spent on traveling while in meeting to boost up your business performance.
DESKTOP COFERENCING
INVESTMENT JUSTIFICATION
Soft-dollar economics • Taking the individual's salary and multiplying it by the time spent traveling to and attending a meeting. We estimate that each offsite meeting costs an average of RM125 per hour (including salary, airfare, meals, and lodging) for each hour the employee is "unavailable / not at office“. Thus, a meeting that takes two and half days costs the company RM2500.
DESKTOP COFERENCING
Network and Networking Components
The ABC Company (Designs & manufactures Widgets -- What did you expect?) • Corporate HQ in Cyberjaya • Branch Office in KL & Penang • Branch in JB
DESKTOP COFERENCING
Network and Network Components
Network Equipment already in place The corporate WAN consists of T-1 leased lines with dynamic & fixed bandwidth allocation capability. Each T-1 consists of twenty-four 64K channels (24*64k in transfer rate)
(T-1 ? Please refer to cabling discussion)
DESKTOP COFERENCING
Network and Network Components
Each channel is capable of carrying 56K of data with 8K of overhead Channels can be dynamically allocated for conference setup & break down. This occurs when a conference is a scheduled event and the LiveLAN system is to be used.
DESKTOP COFERENCING
Network and Network Components • Processor : Higher in processor hertz, GHz) • 10/100 Mb Ethernet at each location
DESKTOP COFERENCING
Network and Network Components • Each LAN is a Microsoft NT Network • All locations have PRI connectivity to the Internet
DESKTOP COFERENCING
EQUIPMENT COST
One LiveLAN System at each location • Setup in a small board room for scheduled conferencing and small group interaction at each location. • Cost RM1200 / location for equipment. RM1000 / location for board room furniture. • Total RM2200 * 4 locations = RM8800
DESKTOP COFERENCING
EQUIPMENT COST : LiveLAN
LiveLAN is a TCP/IP-based visual collaboration solution for your Windows desktop. LiveLAN brings all the benefits and enhanced communications of full-motion & full-screen videoconferencing to your network.
DESKTOP COFERENCING
EQUIPMENT COST : LiveLAN
By installing the bundled of camera, audio and video codec card, speakers & microphone, you'll have the most in visual collaboration capabilities on your corporate LAN/intranet.
DESKTOP COFERENCING
EQUIPMENT COST : LiveLAN
Because LiveLAN is a hardware-assisted solution, CPU utilization is low. Therefore, unlike software-only videoconferencing products, LiveLAN maintains its frame rate and video quality when other applications are run at the same time.
DESKTOP COFERENCING
EQUIPMENT COST
Intel Desktop Conferencing System • Setup on desktop of team members for everyday interaction between locations and departments. • Cost RM70 * 10 for each location • Total RM700 * 4 locations = RM2800 Total Investment in Hardware
RM11,600
DESKTOP COFERENCING
LINE COST
It is estimated that each location will use the LiveLAN System an average of 20 hours per week. Four 64K circuits are allocated to the LiveLAN system for scheduled conferencing • • • • On average each circuit costs RM3 / hour (4 circuits * RM3/hour) * 20 hours/week Equals RM240 / week for line expenses Average of RM12,480/year on line expenses.
DESKTOP COFERENCING
LINE COST
The desktop systems utilize the internet connection and are used on a less formal basis for everyday communication between work group members.
DESKTOP COFERENCING
E-Learning Discussion
What the differences between Desktop Conferencing & Video Conferencing • The similarities (Hardware | Software | Transfer rate) • The differences (Hardware | Software | Transfer rate)
Get your extra mark on your OWN work
