Study these Interview MCQ Questions and Answers on 3G UMTS CDMA2000 (CDMA) network logical Channels and their functions. These channels are part of the CDMA Architecture. UMTS network is called a Third Generation Network (3G). UMTS works on WCDMA, CDMA2000 and TD-SCDMA implementations by 3GPP. GPRS network in 3G is similar to that of the 2G GSM network. You can know information about frequency bands used in 3G networks. WCDMA based 3G networks are much faster than CDMA2000 based 3G networks.