Also known as Personal Communications Services (PCS), second generation wireless service refers to the digital mobile phone technologies that emerged and were deployed during the 1990’s, delivering both voice and data transmissions. 2G technology standards include Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), and (Global System for Mobile Communication (GSM). It also offers auxiliary services such as data, fax and SMS.
AKA:
PCS

