AT&T 无线公司上月底分别与两家著名通信设备厂商——爱立信和诺基亚签署了涉及下一代无线通信设备和技术的协议,可以看出,AT&T 正在积极为向三代无线网络迁移作准备。根据协议,AT&T 无线公司将采用爱立信的 R520手机作为其 GPRS网络的移动终端,并且爱立信将提供基站系统设备,包括 GSM、GPRS、EDGE 和 UMTS。同时,AT&T 无线公司也与诺基亚签署了协议,将由诺基亚为其提供高速 At the end of last month, AT & T Wireless signed agreements with two well-known communications equipment vendors, Ericsson and Nokia, respectively, concerning the next generation of wireless communications equipment and technologies. As we can see, AT & T is actively preparing for the migration to 3G wireless networks. Under the agreement, AT & T Wireless will use Ericsson’s R520 handset as a mobile terminal for its GPRS network and Ericsson will provide base station system equipment including GSM, GPRS, EDGE and UMTS. At the same time, AT & T Wireless also signed an agreement with Nokia, Nokia will provide high-speed