2.8 GPRS development
According to the recommendations of the GSM phase 2+ of the European GPRS, the ETSI is divided into two stages of development (i.e., Phase 1 and Phase2). Phase L GPRS phase will be able to support the following functions and services:
(1) TCP/IP and X.25 services
(2) the new GPRS air interface encryption technology
(3) GPRS supplementary service
(4) enhanced message service type
GPRS packet data billing function, namely according to the amount of data to the billing business function is the most significant TCP/IP and X.25 function. GSM TCP/IP and X.25 network can provide users with e-mail, WWW browsing, data access and other services, LAN. Specification for GPRS Phase 2 is still in the stage of development, it will provide new features and new business more.