California Public Utilities Commission Verizon Wireless Back-up Systems

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 2 Network Quality = Reliability Network Reliability is very, very important…

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 3 Back-up Power Where were you when the lights went out? – –Northeast Blackout 1965 – –NYC Blackout 1977 – –Western Inter-tie failure states + Mexico – –Ice Storm 1998 – Ontario, Quebec and N/E US – –Substation error San Fran 1998 – –California 2000 – 2001 Rolling blackouts – –Southern California 2003 – 2007 Fires – –Northeast Blackout states + Ontario – –Hurricane Isabel N/E states + Ontario & Quebec – –Hurricane Frances 2004 – Florida – –Hurricane Katrina 2005 Fl, LA, MS, AL – –2006 Storms: Philadelphia, St. Louis, SeaTac, – –2007 Storms: OK, MI, MO, TX

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 4 Cell Site Reliability Emergency Generators 8 hour battery backup Portable back-up Generators Cells on Wheels (COW’s) Cells on Light Truck/Trailer (COLT’s) Regular emergency response drills

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 5 Mobile Switching Center (MSC) Network Quality & Switch Reliability Redundant processorsRedundant processors Diversified and protected facilitiesDiversified and protected facilities EPDR binders for every officeEPDR binders for every office Generator systemsGenerator systems MSC designed with 8 hrs battery back upMSC designed with 8 hrs battery back up Preventive Maintenance programPreventive Maintenance program Engineer to NEBS Level 3 StandardsEngineer to NEBS Level 3 Standards

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 6 Back-up Systems COW-(Cell On Wheels) COLT-(Cell On Light Truck)

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 7 Local Network Control Centers Monitoring networkMonitoring network Insuring Network AvailabilityInsuring Network Availability

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 8 WEST NOC EAST NOC Redundant Network Operations Centers 24 X 7 X ,000+ Network Elements Immediate response Network Quality

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 9 Region Disaster Recovery Response Region Disaster Recovery Response PNW Windstorm – –Winds in excess of 90 Mph (60+ Mph in Seattle) struck W. Wash. – –1 to 2 million homes/businesses lost commercial power (majority for 48 to 72 hours) – –VZW Results: At worst point, 60% of our cells (including 2 of 3 MSC’s) w/o commercial power - 87% of sites were operational Network carried 50% more traffic than normal Friday Baseline results for 2 days following the storm demonstrated VZW superior performance

Proprietary and Confidential Information of Verizon Wireless. No disclosure permitted without written permission. SLIDE 10 Fuel Cell Technology for Wireless Present StatusPresent Status –Most fuel cells on the market are 5 KW units and some can be configured into parallel systems to increase capacity –Fuel cell companies are working to increase the capacity of their systems. Other FactorsOther Factors –National Fire Protection Association (NFPA) Standards restricts where hydrogen storage tanks may be placed. –Fuel Cells cannot handle heavy inrush currents or “step loads” presented by compressors for air conditioning & microwave waveguide dehydrators. Verizon Wireless is trialing as the technology advances.Verizon Wireless is trialing as the technology advances.

Thank you