The document provides a detailed explanation of the columns and data present in T-Mobile's Call Detail Records (CDR). It includes information on call types, directions, numbers involved, and technical details such as IMSI, IMEI, and service codes. The document also explains the presence of location data for calls made over LTE, including tower information and azimuth orientation. It emphasizes the use of UTC time in records and provides guidance on interpreting and converting these records.
documents/EFTA00153457.pdf
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