Voice over IP Are we there yet ?


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Voice over IP Are we there yet ?

  1. 1. Voice over IP Are we there yet ? Presented by: Mark Caswell, Empire Technologies, LLC . Voice over IP
  2. 2. <ul><li>Different types of solutions </li></ul><ul><li>Reliability </li></ul><ul><li>Scalability </li></ul><ul><li>Security </li></ul><ul><li>Proprietary Solutions vs. “Open” Standards </li></ul><ul><li>VoIP Telephones </li></ul><ul><li>VoIP Trunking </li></ul><ul><li>VoIP Applications </li></ul><ul><li>The answer to the question…. </li></ul>Defining “THERE”
  3. 3. VoIP Solution Types <ul><li>Hosted </li></ul><ul><ul><li>IP Centrex </li></ul></ul><ul><ul><li>Hosted IP Solutions (Vonage, etc) </li></ul></ul><ul><ul><li>Large Carrier Offerings </li></ul></ul><ul><ul><li>SIP Offerings – Large and Small Carrier offerings </li></ul></ul><ul><li>Customer Owned </li></ul><ul><ul><li>Pure IP PBX </li></ul></ul><ul><ul><ul><li>Packet switched backplane </li></ul></ul></ul><ul><ul><ul><li>Usually built on Data Networking Infrastructure (Switches, routers) and Servers </li></ul></ul></ul><ul><ul><li>Hybrid PBX </li></ul></ul><ul><ul><ul><li>TDM/Circuit Switched backplane </li></ul></ul></ul><ul><ul><ul><li>Existing Proprietary PBX supporting open protocols </li></ul></ul></ul><ul><ul><ul><li>IP Enabled using VoIP Protocol Components </li></ul></ul></ul><ul><ul><ul><ul><li>Example H.323 Gatekeeper/Gateway Model </li></ul></ul></ul></ul>
  4. 4. RELIABILITY <ul><li>What are YOUR customer’s expectations concerning voice communications? </li></ul><ul><li>How good is your Data Network ? </li></ul><ul><ul><li>What are the MTBF’s – Mean Time Between Failures </li></ul></ul><ul><ul><li>Is the WAN fully or partially meshed ? </li></ul></ul><ul><ul><li>Are there single points of failure ? </li></ul></ul><ul><ul><li>Does the LAN support multiple paths ? </li></ul></ul><ul><ul><li>How well is the Network supported ? </li></ul></ul><ul><ul><li>How well is it managed from a performance point of view ? </li></ul></ul><ul><ul><li>Can you add Quality of Service Management to the existing list of support responsibilities ? </li></ul></ul>
  5. 5. Scalability <ul><li>Largely a question for Customer-Owned Solutions. </li></ul><ul><li>How large is your total organization ? </li></ul><ul><li>Small System solutions can range from 2 to 200 Stations and trunks. </li></ul><ul><li>Large solutions can support up to 36,000 Stations and trunks on a single pair of hot standby servers. </li></ul><ul><li>Small solutions (under 20 stations) can also be peer to peer and provide advanced features. </li></ul>
  6. 6. Security <ul><li>Voice (Conversation) Security </li></ul><ul><ul><li>Old School Wire Tap vs. Vomit </li></ul></ul><ul><ul><li>Voice Encryption – only offered by some vendors for all devices, End to End </li></ul></ul><ul><li>Data/Server Security </li></ul><ul><ul><li>Denial of Service Attacks </li></ul></ul><ul><ul><li>Operating System attacks - Viruses, worms, spyware, etc. </li></ul></ul>
  7. 7. Proprietary Solutions vs. “Open” Standards <ul><li>Full Featured proprietary systems and phones do not typically work seamlessly with other vendor’s systems </li></ul><ul><li>SIP Phones are “Lowest Common Denominator” </li></ul><ul><ul><li>The “Open” standard is interpreted by the vendor </li></ul></ul><ul><ul><li>Limited feature set – 16 SIPPING features </li></ul></ul><ul><ul><li>Additional features are unique to the telephone </li></ul></ul><ul><ul><li>Not all phones and features will work with all SIP systems </li></ul></ul>
  8. 8. VoIP Telephones <ul><li>Proprietary IP Telephones </li></ul><ul><ul><li>Specific to a vendor’s solution </li></ul></ul><ul><ul><li>Typically have a complete PBX feature set </li></ul></ul><ul><ul><li>Cost between $100 and $750 each </li></ul></ul><ul><li>SIP Telephones </li></ul><ul><ul><li>Not vendor specific </li></ul></ul><ul><ul><li>Limited feature set - SIPPING </li></ul></ul><ul><ul><li>Cost between $20 and $300 </li></ul></ul>
  9. 9. VoIP Trunking <ul><li>PBX Site to Site Trunking </li></ul><ul><ul><li>Can save Long Distance costs and share Data Networking Infrastructure </li></ul></ul><ul><ul><li>Should include fail-over/over-subscription mechanism for re-routing calls </li></ul></ul><ul><li>SIP trunking </li></ul><ul><ul><li>PSTN Access </li></ul></ul><ul><ul><li>Very cost effective </li></ul></ul><ul><ul><li>Should also make sure PBX can re-route if necessary </li></ul></ul><ul><ul><li>Several large players: Global Crossing, AT&T </li></ul></ul>
  10. 10. VoIP Applications <ul><li>The REALLY GOOD Reason for using VoIP! </li></ul><ul><ul><li>Productivity applications </li></ul></ul><ul><ul><li>Call Center / Computer Telephony Integration </li></ul></ul><ul><ul><li>Mobility Applications </li></ul></ul><ul><ul><li>Database access </li></ul></ul><ul><ul><li>Integration with existing business operations </li></ul></ul><ul><ul><li>Temporary Operations or Locations </li></ul></ul>
  11. 11. The Answer: <ul><li>YES </li></ul><ul><li>if it is planned and executed properly </li></ul>