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  • It is also referred to as IP Telephony. It is another way of making phone calls, though the ‘phone’ part is not always present anymore, as you can communicate without a telephone set.
  • It is simply the worldwide telephone network. I am here referring to the old phone system. It carries analog data. In constrast, VoIP uses digital data.
  • make use of an already paid-for data connection
  • Nurses- asks for help or for information (rather than leaving bedside to do so) - patient monitors tapped into system to direct alerts to specific people so they know what is going on and where, rather than using an overhead paging system that call everyone
  • In addition, while the U.S. Do-Not-Call list protects consumers from calls inside the U.S., it can’t shield recipients from calls placed overseas where the cost barriers are eliminated by IP calling.
  • Conversely, if their network isn’t secure, it could corrupt not only their IT, but their phone systems as well. They could take over companies’ VoIP systems and make unwanted calls, consuming up their bandwidth. Added security to eliminate these vulnerabilities may erode the cost of savings associated with VoIP systems. Although many of the potential threats are theoretical as VoIP attacks remain rare, preventive measures may prove to be worth its investment. Security software companies such as Symantec (SYMC) and McAfee (MFE) are said to be working on VoIP security products but haven’t made any public announcements.
  • Computer networks are designed to handle messy data: packets arrive out of order and some are even lost, but in most cases the data being sent can easily be reconstructed before it is needed. Voice conversations are not tolerant of these disturbances, sound packets need to arrive in the correct order because they are being sent in real time. If packets are lost, the conversation sounds distorted, choppy, or falls off all together. Suitable networks are needed for high-quality voice conversation. Frame relay networks are ideal, but standard Ethernet networks will suffice. However, they may need to be boosted with a Quality of Service (QoS) application.
  • Most VoIP phones need to be plugged into a power source to work and are network-dependent. For businesses where phone service is critical, this can be a concern since computer networks can occasionally be brought down by a server crash or other problem. It is imperative to have a good IT staff should a problem occur. Potential power outages give good reason to having a mix of digital and VoIP. Companies that have backup power systems can keep their PBX running and the digital phone system within the main office will continue to operate even if the data network is unavailable.
  • This translates to no loss in your current system and a faster ROI to switch to VoIP telephony.
  • Evaluate your ROI based on cost-savings.
  • The MAC process in VoIP is greatly simplified because almost all VoIP systems are configurable through a web interface that can be managed by the administrator.
  • Features such as ‘Find me’ or “Follow me’ will ring multiple locations until a person is found. Telecommuters can plug in at home and receive calls as if they’re in the office.
  • VoIP telephony offers all the features of existing PBXs plus numerous other features that can increase efficiency and productivity.
  • A 16-phone VoIP system for a typical business ranges from $10,000 to $30,000 or more. A 64-phone installation including a dedicated server, voice mail and more could cost $50,000 to $75,000 or more.
  • You may salvage existing equipment as many PBXs can be IP-enabled. You may even be able to use digital phones you already have. Many systems say the include “everything” but may not include the specific features you require. Some companies use proprietary technology; having a system run entirely on open standards allows greater flexibility in integration and customization. Fax machines, credit card processors, security systems, and other devices. Make sure your vendor knows and accommodates these types of uses when planning your phone system.
  • Build in room for growth.
  • You set yourself up for shorter life spans, higher upgrade costs, are more maintenance.
  • Your state board of electricity can tell you if a vendor is licensed, verifying that they are bonded, covered with insurance, and are generally in good standing with the state. Some vendors take your system’s documentation with them when they are finished, leaving only the user guides. Most VoIP systems have web interfaces for making simple changes like adding users, but you will need the documentation and the admin password.
  • Decision to use VoIP should be made on individual basis
  • www2.hawaii.edu

    1. 1. “ VOIP&quot; SYSTEMS <ul><li> </li></ul><ul><li>prepared by: </li></ul><ul><li>Dean Adolpho </li></ul><ul><li>Stephen Van Kampen-Lewis </li></ul><ul><li>Michael Kelter </li></ul><ul><li>Maureen Yee-Lam </li></ul>
    2. 2. What is VOIP? <ul><li>Definition: Voice-Over Internet Protocol </li></ul><ul><li>VoIP- stands for Voice over Internet Protocol </li></ul>
    3. 3. PSTN <ul><li>PSTN- stands for Public Switched Telephone Network </li></ul><ul><ul><li>Same thing as POTS (Plain Old Telephone System) </li></ul></ul>
    4. 4. PSTN
    5. 5. VOIP
    6. 6. Key Vendors <ul><li>AT&T </li></ul><ul><li>WorldCom </li></ul><ul><li>Sprint </li></ul>
    7. 7. Initial Reasons to Look at VoIP <ul><li>High costs of traditional phone lines </li></ul><ul><li>Redundancy of multiple communication systems </li></ul><ul><li>Phone service disruptions </li></ul><ul><ul><li>Old buildings, old phone lines </li></ul></ul><ul><ul><li>Inconsistent service (eg. London) </li></ul></ul>
    8. 8. Benefits <ul><li>#1- Savings on phone bills </li></ul><ul><ul><li>Highest costs often between locations </li></ul></ul><ul><ul><li>High costs for connecting/transferring calls </li></ul></ul><ul><ul><ul><li>Eg. DirecTV  cost $0.01-$0.02 per transfer </li></ul></ul></ul><ul><ul><ul><li>Spends $60 million/yr on telecom </li></ul></ul></ul><ul><ul><ul><ul><li>75% on connecting calls </li></ul></ul></ul></ul>
    9. 9. Benefits <ul><li>Increased Agility </li></ul><ul><ul><li>Faster installation of services than traditional phone lines </li></ul></ul><ul><ul><li>Increased employee mobility </li></ul></ul><ul><ul><ul><li>Plug phone into any broadband outlet anywhere in the world and speak as though from home office </li></ul></ul></ul>
    10. 10. Benefits <ul><li>Tactical Advatages </li></ul><ul><ul><li>Reduced network admin & reduced hardware expenses </li></ul></ul><ul><ul><ul><li>Hardware upgrades improve entire network because dedicated voice system redundancy avoided </li></ul></ul></ul><ul><ul><ul><li>Many telephony functions moved into software realm, thus easily modified </li></ul></ul></ul>
    11. 11. Benefits <ul><ul><li>Integrate things like: unified paging system, emails, phone, faxing all from same platform </li></ul></ul><ul><ul><ul><li>Listen to and compose emails by phone </li></ul></ul></ul><ul><ul><li>Actual benefits not fully realized </li></ul></ul><ul><ul><ul><li>New technology not even invented yet </li></ul></ul></ul>
    12. 12. Benefits <ul><li>Examples of Novel Use </li></ul><ul><ul><li>Hospital in Providence </li></ul></ul><ul><ul><ul><li>Nurses wear wireless communication badges attached to scrubs </li></ul></ul></ul><ul><ul><ul><li>Patient monitors tapped into system for precision alerts </li></ul></ul></ul>
    13. 13. VoIP’s Vulnerabilities <ul><li>Currently there is: </li></ul><ul><ul><li>no regulator </li></ul></ul><ul><ul><li>no control </li></ul></ul><ul><ul><li>no one person to validate what’s on your network </li></ul></ul><ul><li>Voice spam (SPIT-Spam Over Internet Telephony) </li></ul>
    14. 14. VoIP’s Vulnerabilities <ul><li>Businesses with phone systems tied in to networks give hackers additional entry point into network </li></ul>
    15. 15. VoIP’s Challenges <ul><li>Maintaining call quality; high quality sound requires a lot of bandwidth </li></ul><ul><li>Data transmission problems </li></ul>
    16. 16. VoIP’s Challenges <ul><li>Network or computer crashes </li></ul><ul><li>Power Outages </li></ul>
    17. 17. Is VoIP the right solution for your business? <ul><li>Is your current phone system more than 5 years old? </li></ul><ul><ul><li>Most PBXs (in traditional phone systems) are fully depreciated in 5 years </li></ul></ul>
    18. 18. <ul><li>Do you have separate bills for high-speed internet access, local phone lines, and long distance services? </li></ul><ul><ul><li>Consolidating these services can save up to 20% </li></ul></ul>Is VoIP the right solution for your business?
    19. 19. Is VoIP the right solution for your business? <ul><li>Are large amounts of monies spent on reconfiguring your current system? </li></ul><ul><ul><li>Each move, add or change (MAC) to a PBX is very costly </li></ul></ul>
    20. 20. Is VoIP the right solution for your business? <ul><li>Do you have telecommuters or a remote work-force? </li></ul><ul><ul><li>Productivity-enhancing features of VoIP have a powerful impact on remote work-forces efficiency </li></ul></ul>
    21. 21. <ul><li>Do you have the latest tools and functionality for office efficiency? </li></ul><ul><ul><li>Forward emails as wave files to anyone inside or outside your company </li></ul></ul><ul><ul><li>Click to dial from your computer </li></ul></ul><ul><ul><li>Review call logs online </li></ul></ul>Is VoIP the right solution for your business?
    22. 22. Buying VoIP Sales Channels <ul><li>Buy from a local reseller </li></ul><ul><ul><li>Licensed, certified resellers have proven expertise, customer support, and quick response times for problems that require an on-site visit </li></ul></ul>
    23. 23. Buying VoIP Pricing <ul><li>Prices vary depending on: </li></ul><ul><ul><li>Features required </li></ul></ul><ul><ul><li>Existing phone structure </li></ul></ul><ul><ul><li>State of data network </li></ul></ul>
    24. 24. Buying VoIP Choosing a System <ul><li>Inquire about reusing existing equipment </li></ul><ul><li>Compare phone systems and investigate details carefully </li></ul><ul><li>Make sure system built on open standards </li></ul>
    25. 25. Buying VoIP Plan For the Future <ul><li>Cost difference between including extra capacity at beginning of project and adding more hardware later is significant </li></ul>
    26. 26. Buying VoIP Don’t Buy Used Equipment <ul><li>VoIP technology is evolving at rapid pace </li></ul><ul><ul><li>Even last year’s equipment is extremely dated </li></ul></ul><ul><li>Installation cost (significant portion of price) does not change whether system is old or new </li></ul>
    27. 27. Buying VoIP Investigate Your Vendor <ul><li>Don’t take chances on unlicensed or unauthorized vendors </li></ul><ul><li>Make sure you get all the administrator documentation and passwords </li></ul>
    28. 28. Conclusion <ul><li>Overall we recommend careful integration </li></ul><ul><ul><li>Use pilot programs </li></ul></ul><ul><li>VoIP is becoming more and more commonplace because of cost savings and increased productivity </li></ul>
    29. 29. Conclusion <ul><li>Must weigh the growing capabilities of young technology against its disruptive potential </li></ul><ul><ul><li>New way of doing business </li></ul></ul><ul><ul><li>Needs careful planning well before deployment </li></ul></ul><ul><li>Decision to use VoIP should be made on case by case basis. </li></ul><ul><ul><li>ie. applications in call centers make a natural fit </li></ul></ul><ul><li>Overall we recommend careful integration </li></ul><ul><ul><li>perhaps a pilot program </li></ul></ul>
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