Electronic Serial Number (ESN): The unique identification number embedded in a wireless phone by the manufacturer. Each time a call is placed, the ESN is automatically transmitted to the base station so the wireless carrier's mobile switching office can check the call's validity. The ESN cannot easily be altered in the field. The ESN differs from the mobile identification number, which is the wireless carrier's identifier for a phone in the network. MINs and ESNs can be electronically checked to help prevent fraud.

 

Related Words

Electronic Serial Number (ESN): The unique identification number embedded in a wireless phone by the manufacturer. Each time a call is placed, the ESN is automatically transmitted to the base station so the wireless carrie . . . View Full Definition

Mobile Identification Number (MIN): Uniquely identifies a mobile unit within a wireless carrier's network. The MIN often can be dialed from other wireless or wireline networks. The number differs from the electronic serial num . . . View Full Definition

Number Of Days Sales In Receivables: A measure of the average number of days it takes to collect a credit sale: computed by dividing 365 days by the accounts receivable turnover.

Number Of Days Of Inventory On Hand: An alternative measure of how well inventory is being managed: computed by dividing 365 days by the inventory turnover ratio.