The FASCIA format is a simple JSON format to exchange information from mobile network monitoring devices (such as IMSI catchers, passive analysis tools) into
| lac | integer | location area code (LAC) for GSM/UMTS or tracking area code (TAC) for LTE |
| cell | integer | Cell ID (CID) of the base transceiver stations (BTS) for GSM and LTE. For UTMS, this is the UTRAN cell id with the addition of the radio network controller (RNC).|
| unit | integer | Primary scrambling code (PSC) for UTMS. Physical cell id (PCI) for LTE. For GSM, the field is empty. |