Revisions narrowband analog mobile phone service (NAMPS), TIA/EIA-691Īnd subsequent revisions code division multiple access (CDMA), TIA/EIA-95, Radiotelecommunications intersystem operations family of standards, TIA/EIA-41 Īdvanced mobile phone service (AMPS), TIA/EIA-553 and subsequent Subscriber equipment in the cellular service, personal communications services and other wireless services that conform to the cellular ( FCC) Wireless Telecommunications Bureau in September 1997, manages and coordinates manufacturer codes for How is TIA involved? TIA, which took over the ESN function from the Federal Communications Commission's MINs and ESNs can be electronically checked to help Identification number (MIN), which is the wireless carrier's identifier for a phone in the network. The ESN cannot easily be altered in the field. Each time a call is placed, the ESN is automatically transmitted to the base station so the wirelessĬarrier's mobile switching office can check the call's validity. Definition: An electronic serial number (ESN) is the unique identification number embedded or inscribed on the microchip
