AT&T and China Telecom signed an agreement on Wednesday to share  telecommunications infrastructure across the U.S. and China, in a move  meant to help their business customers.
 
 Under the agreement, the carriers will take advantage of each other's  infrastructure to expand virtual private network (VPN) and cross-country  services geared for international companies, said AT&T spokesman  Greg Brutus. The agreement also includes sharing Wi-Fi hotspots to offer  a roaming service to customers, he added.
 
 AT&T has identified more than 1,700 large multinational companies  worldwide, and many of these have a presence in China, according to  Brutus. Currently AT&T has about 600 of those companies as its  customers, but wants to attract more with better cross-border services. 
 
 "It's very much a two-way agreement," Brutus said. China Telecom will be  able to support global Chinese companies that are expanding overseas,  particularly in the U.S., he added.
 
 China Telecom, which has 120 million mobile subscribers, could not be  immediately reached for comment. The company already plans to launch a mobile service in the U.S. during the first quarter of next year. The service would  work by China Telecom purchasing network capacity from an existing U.S.  operator, and will be marketed to Chinese-Americans, and students and  tourists that travel between the two countries. 
 
 The agreement between AT&T and China Telecom is very basic, said  Nicole Peng, a research director for analyst firm Canalys. "But I think  in the future, they will have more cooperation in other areas," she  said. 
 
 Some of those areas could include jointly offering products in cloud  computing and unified communications for business customers, she said. 
 
 As part of Wednesday's agreement, AT&T and China Telecom also plan  to explore providing mutual support in other parts of the world. This  could involve AT&T helping China Telecom to expand its services in  regions such as Latin America, Brutus said. In November, AT&T signed  a similar agreement with Latin American telecommunications firm  American Movil to jointly explore delivering better communication  services to international companies.
 
 Both AT&T and China Telecom are already partners, and started a  joint venture in China called Shanghai Symphony Telecommunications in  2000.
