Which of the following statements about network color code are correct? (Multiple choice)
A . The NCC and the BCC together form a Base Station Identity Code (BSIC), which is transmitted on the synchronization channel (SCH) of each cell.
B . Generally, GSM PLMNs in neighboring countries choose different NCCs, so it is only necessary to negotiate BCC when planning domestic provinces and cities.
C . It must be ensured that adjacent or neighboring cells using the same BCCH carrier frequency have different BSICs. Therefore, we must pay special attention to the configuration of the communities at the junctions of provinces and cities.
D . BCC values can range from 1 to 7.
Answer: A C