The Communication during the September 11, 2001 attacks reference article from the English Wikipedia on 24-Jul-2004
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Communication during the September 11, 2001 attacks

For people who check facts
September 11, 2001 attacks
Timeline
Background history
Planning and execution
September 11, 2001
Rest of September
October
Aftermath
Victims
Casualties
Missing Persons
Survivors
Foreign casualties
Rescue workers
Effects
US government response
World political effects
World economic effects
Airport security
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Response
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Communication
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Cell phones and in-plane credit card phones played a major role during and after the attack, starting with hijacked passengers who called family or notified the authorities about what was happening. Passengers and crew who made calls include Todd Beamer, Tom Burnett, Mark Bingham, Peter Hanson, Jeremy Glick, Barbara K. Olson, Madeline Amy Sweeney, and Betty Ong.

After the attack, the cell phone network of New York City was rapidly overloaded as traffic doubled over normal levels. Since three of the major broadcast networks had their transmission tower atop the North Tower (One World Trade Center), coverage was limited after the collapse of the tower.

Emergency relief efforts in both Lower Manhattan and at the Pentagon were augmented by volunteer amateur radio operators in the weeks after the attacks.

After the planes struck the World Trade Center, people inside made calls to loved ones; in many cases, the last ever heard from them.

AT&T eliminated any costs for domestic calls originating from the New York City area (212/718/917/646/347) in days following.

See also: "War on Terrorism" -- U.S. invasion of Afghanistan -- 2001 anthrax attack -- World Trade Center -- The Pentagon -- New York City -- Washington, D.C -- AA Flight 11 -- UA Flight 75 -- AA Flight 77 -- UA Flight 93 -- U.S. Department of Defense -- Operation Bojinka -- terrorism -- domestic terrorism -- Osama bin Laden -- Taliban -- Islamism -- Afghanistan -- collective trauma -- September 11

External Links and References

An Unimaginable Emergency Put Communications to the Test, The New York Times, 9/20/2001
The Simple BlackBerry Allowed Contact When Phones Failed, The New York Times, 9/20/2001
Using a Cellphone Signal to Hunt for a Victim in Desperate Need, The New York Times, 9/20/2001