Base station identity code

The base station identity code (BSIC) is a truncated form of cell identity used on the synchronization channel in GSM cellular networks. The BSIC is 6 bits in length and composed of a 3-bit network color code (NCC) and a 3-bit base-station color code (BCC). The NCC is normally assigned by a national or international regulatory authority and the BCC is assigned by the network operator. The BSIC is defined in GSM specification 03.03 section 4.3.2.