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In 2003, Verizon Wireless and Sprint PCS each launched push-to-talk features, with Cingular following in 2005. None have gained significant traction. Nextel and Verizon had entered a legal battle in June 2003 over Verizon's advertising for their push-to-talk feature. The companies reached a settlement in early 2004.
The beginnings of Cingular can be traced all the way back to 1978, when AT&T created Advanced Mobile Phone Service to offer the services we know as today's modern cellular services. That company ...
Cingular, the predecessor to AT&T, supported legacy D-AMPS/TDMA and analog wireless networks. In March 2006, Cingular announced that these networks would be shut down by February 2008. As of March 31, 2007, Cingular ended TDMA supported for GoPhone (pre-paid) customers. On July 15, 2007, AT&T TDMA on 1900 MHz was retired, while TDMA on 850 MHz ...
Cingular became wholly owned by the new AT&T in December 2006 as a result of the new AT&T's acquisition of BellSouth. After the merger, Cingular was renamed AT&T Mobility in late 2006 and remained the largest wireless carrier until 2009 when Verizon Wireless acquired Alltel to become the largest wireless service provider by a number of subscribers.
BlackBerry phones, the iPhone, LTE and push-to-talk phones aren't supported, so you can go ahead and toss those dreams aside. That said, those of you who are still in the mix after that blow can ...
A significant advantage of PTT is the ability for a single person to reach an active talk group with a single button press; users don't need to make several telephone calls to coordinate with a group. Push-to-talk cellular calls similarly provide half-duplex communications – while one person transmits, the other(s) receive. This combines the ...