问一些很菜的问题!

xuguojin

请问一下谁知道DCS,PCS 英文的意思啊?谢谢了先!

nangyang

<P>DCS:Digital Cellular System 指频段1800（Low power variant of GSM, with 1.8 GHz carrier, used in Europe (e.g., Mercury One-2-One) ）</P><P>PCS:Personal Communications Service 指频段1900（Within the U.S., the 1.9 GHz band has been allocated for PCS systems; the allocated spectrum is 120 MHz wide and is licensed as two 30 MHz segments for the 51 major trading areas, and three 10 MHz segments for the 493 basic trading areas. ）</P>[br]<p align=right><font color=red>+5 RD币</font></p>

xuguojin

<P>thanks1</P>