CDMA Standards History CDMA 标准历史 May 1995 IS95-A was introduced as the dual mode cellular band interim standard for CDMA. 1995 年 5 月 IS95A 成为 CDMA Cell 频段过渡标准。 June 1996 J-STD-008 was introduced as the CDMA PCS band interim standard. 1996 年 6 月 J-STD-008 被引入成为 PCS 频段过渡标准。 June 1997 IS95-B standard which combine the other two mentioned above with higher voice data rates, also referenced as TSB74 1997 年 IS95-B 标准, 也称为 TSB74 结合了上述两种标准，同时提供了更高的话音编码速率，。 March 2000 CDMA 2000 introduced as the 3G replaces IS95B as new standard. 2000 年 3 月推出的 CDMA 2000 作为 3G 标准，取代了 IS95B 成为新的标准。