Cingular completed its GSM network integration project, 
which began shortly after the merger of Cingular Wireless and AT&T Wireless in October 2004. The network integration was one of several initiatives the company funded as part of its $13 billion 2005/2006 capital investment to enhance network quality and coverage.
The result of the integration currently gives customers access to nearly 47,000 cell sites throughout the country.
Throughout the integration process, hundreds of technicians from third- party testing companies, infrastructure vendors, and Cingular’s own employees used specially designed vehicles to travel throughout the country testing the signal strength and coverage of the GSM network.
Cingular is currently deploying its 3G UMTS/HSDPA network throughout the country. The 3G service, which offers mobile wireless broadband connections averaging 400-700 Kbps, is available in 105 markets (populations of 100 thousand or more) in and around 44 major metropolitan cities.
http://www.cingular.com
