ROBUST ARCHITECTURE

Staying Ahead of the Curve

• $3.5 billion upgrade/rebuildprogram

• Year-end 2000 targets

  • About 70% at 550 MHz or greater
  • About 60% at 750 MHz or greater

• Year-end 2002 targets

  • 93% of customers served by750-860 MHz systems
  • 98% of customers served by 550 MHz-plus systems

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