1. www.mgeups.com Power Protection for Voice over IP, and other new, Mission-critical Network Applications wBrad Amano Market Segment Manager MGE UPS SYSTEMS wJune 20, 2006

2. page 2 Powering the Converged Network Data Voice Power

3. page 3 Market Opportunity wSignificant VoIP advantages over traditional enterprise telephony networks >Reduced carrier circuit charges >Enhanced applications –Desktop video conferencing –Voice-enabled Web sites >Integrated management systems and strategies >Increased flexibility for a reduction in overall complexity and elimination of circuit redundancy

4. page 4 Market Opportunity wPower over Ethernet Standardization >IEEE 802.3af –This standard allows a convenient and cost-effective powering of the phones (no local desk DC power needed) as well as simple, centralized power protection of the whole installation directly from the switch/wiring closet.

5. page 5 IP Telephony Considerations wKey considerations in the implementation of Power over Ethernet >Availability –Five nines (99.999%) availability –5.3 minutes or less of downtime per year >Simplicity of installation –Elimination of individual AC sources

6. page 6 Powering IP Phones AC In Connection to backbone UPS & battery extention (long backup time) Patch panels UPS protects the rack equipment Non powered IP line (cat 5/5e/6 cable) PoE powered IP line (cat 5/5e/6 cable) AC In Connection to backbone UPS & battery extention (long autonomies) PoE Switches Patch panels UPS protects the rack equipment Non powered IP line (cat 5 cable) PoE powered IP line (cat 5 cable) PoE midspan Switches Utilizing PoE SwitchesUtilizing PoE Midspans

7. page 7 Selecting the Appropriate Sized PoE Midspan and UPS At servers and switches level Centralized vs. Active Equipment (Switches, IP PBX) UPS Active Equipment (Switches, IP PBX) UPS

8. page 8 Selecting the Appropriate Sized PoE Midspan and UPS wExample: Switching closet with 96 IP lines (4x 24-ports switches) providing connectivity to 48 users, each with a PC and a PoE-powered IP phone.

9. page 9 Selecting the Appropriate Sized PoE Midspan and UPS wUPS Technology >Line-interactive >True On-Line, Double Conversion –Ultimate Voltage Regulation –Genset Compatibility wRemote Management >Manageability of PoE device and UPS >Reduction of costs

10. page 10 PoE Applications wInitial applications : >IP telephony >Wireless LAN >IP video surveillance wExtended applications >RFID tag readers >Bluetooth access points >Thermostats >Security access control (badge readers) >POS terminal devices (scanners, credit card readers) >Alarm systems, smoke detectors >Mini laptops, PDAs VoIP WLAN

11. page 11 Conclusion wChange in the way we think about powering network components. wNew network applications and devices are adapting to and greatly benefiting from such technology. wWith the combination of this standard, it is now convenient, easy to manage and cost-effective to reliably power network devices such as IP phones, wireless access points, IP-based security devices and many other devices.