Cẩm nang dữ liệu không dây P11

GREAT EXPECTATIONS “When Bell Atlantic Mobile Systems (BAMS) launches its first . . . CDPD . . . system in Washington . . . it will initiate a new business that will impact the . . . bottom line by 1995. . . . The average monthly bill for cellular is dropping, and . . . new services such as data will boost those bills.”1 This BAMS management expectation was common to all nascent data carriers of the period. But were their expectations realistic? With multiple carriers bringing increasingly untapped capacity to market, is it reasonable to believe that...