9/11 Calls
Wireless devices in the post-attacks era
Mobile communications took on new significance on September 11, 2001. Mobile phones loomed large in the drama, but many New York wireless networks were damaged in the World Trade Center collapse-or overloaded in its aftermath.
In contrast, the satellite-based transmitters for Iridium and Globalstar satellite phones remained above the fray. Likewise, Research in Motion's BlackBerries kept transferring instant e-mail. That was because the networks they use escaped damage; also, their packet data channels handle traffic increases better than voice channels.
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