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Explained..

POWER OVER ETHERNET. Explained. AGENDA. Introduction P ower o ver E thernet Advantages How PoE Works Deploying PoE. INTRODUCTION. Q: What is Power over Ethernet (PoE)?

patricia-fitzpatrick
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Explained..

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  1. POWER OVER ETHERNET Explained..

  2. AGENDA • Introduction • Power over Ethernet Advantages • How PoE Works • Deploying PoE

  3. INTRODUCTION • Q: What is Power over Ethernet (PoE)? • A: It is the technology to send 48 volts DC power along with Ethernet data on 4 pair Unshielded Twisted Pair (UTP) or Shielded Twisted Pair (STP) cable.

  4. INTRODUCTION • Allows reliable DC power as well as data over existing LAN cabling, without modifying existing Ethernet infrastructure • Technology used by telecom industry to power traditional phones • Developed to provide lifeline quality power for IP telephony • Later expanded to broad range of devices

  5. POE =Power Over Ethernet • Implications of this technology • The RJ-45 connector has become the first universal worldwide power connector ! • No need for a power adaptor or “brick” at each telephone device

  6. THE STANDARD: IEEE 802.3af • Approved on 12 June 2003 • Supports familiar technologies: • the ubiquitous RJ-45 plug and outlet • Ethernet • Category 5 and better (10/100/1000 BaseT) • See http://www.ieee802.org/3/af/

  7. PoE ADVANTAGES Lower Costs • Eliminate the need to run A/C power wires • Reduces number of A/C power sockets • Utilise existing IT infrastructure investments • Ethernet cabling is everywhere, why not use it? More Flexible • Locate device where performance is optimum • Not constrained by the location of the AC outlet Centralise vs Localize Power Source • Allow use of a centralized UPS to guarantee power to the appliance even during mains power failure

  8. PoE ADVANTAGES Safer • No mains voltage anywhere Manageability • PoE devices that are Simple Network Management Protocol (SNMP) manageable can be remotely monitored and controlled • Efficiently manage or troubleshoot power consumption and/or failures

  9. EXAMPLES of Panasonic PoE Devices • NT300 VoIP Phones • SIP IP Phones • Future DECT Access Points • Panasonic IP Cameras • ETC

  10. HOW PoE WORKS Two Basic Components: • Power Sourcing Equipment (PSE): a device that supplies PoE power • Located in Telecom Room or similar space • Example: Power Patch Panel, Power Hub/Switch • Powered Device (PD): a device that receives and utilizes PoE type power • Located in the user area • Example: VoIP Phones, Wireless AP, IP Cameras

  11. HOW PoE WORKS How is power supplied? Via Data Pairs (Pins 3-6 and 1-2) Via Spare Pairs (Pins 4-5 and 7-8)

  12. HOW PoE WORKS How much power is available? • 48V DC • Maximum of 350mA sent to PD • Maximum Distance is 100m • ~13 Watts maximum power available (37V x 350mA = 12.95W) VoIP Phone 3-7 watts IP Camera 7-12 watts

  13. HOW PoE WORKS What if I plug in a non-PoE device? • Upon connection of any device, PSE “discovers” if device is PD or not • Ensures non-PoE compliant equipment is not given power Need Power? POE? Yes, Thanks. OK, Here you go. PSE Power Sourcing Equipment PDPower Device

  14. Patch Panel Ethernet Switch POE Ethernet Switch DEPLOYING PoE MID-SPAN END-SPAN Types of PSE UPS UPS UPS Ethernet Switch PoE Patch Panel MidSpan PoE 1 1 1 2 Patch Panel 3 2 2 Optional Optional 4 Optional Cross connect Panel Cross connect Panel Cross connect Panel Horizontal Cabling Horizontal Cabling Horizontal Cabling 4 4 6 Optional 3 Optional 3 Optional 5 Consolidation Point Consolidation Point Consolidation Point PoE Device (VoIP phone) PoE Device (VoIP phone) PoE Device (VoIP phone)

  15. DEPLOYING PoE Some examples of PSE’s • End-Span • PoE Switch

  16. DEPLOYING PoE Types of Mid-Span • Power patch panel vs Power hub

  17. IN SUMMARY • PoE is designed to save time, money for customer • PoE can save substantial costs and install time for dealers • There is a need to power more products in the new future

  18. Thank You !

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