This standard provides recommended options for globally unique serial identification for infrastructure equipment used in telecommunications networks. It covers four options that can be used to ensure uniqueness in a serialization process within a company. The manufacturers@ suppliers and related services companies are responsible for ensuring that their process results in serial numbers that are unique. Intended applications include -- but are not limited to -- support of systems that automate the control of products during the processes of production@ inventory@ distribution@ field service@ and repair. This standard does not replace the Electronic Serial Number (ESN) or the Mobile Equipment Identifier (MEID) which conform to the cellular radio telecommunications intersystem operations family of standards@ TIA/EIA-41; advanced mobile phone service (AMPS)@ TIA/EIA-553@ and subsequent revisions; narrowband analog mobile phone service (NAMPS)@ TIA/EIA-691@ and subsequent revisions; code division multiple access (CDMA)@ TIA/EIA- 95@ TIA/EIA/IS-2000@ and subsequent revisions; and time division multiple access (TDMA)@ TIA/EIA-136. Purpose The purpose of this standard is to provide a uniform method of creating the globally unique serial identification for the telecommunications industry by recommending the code structure for the unique serial identification used by manufacturers@ suppliers@ and related services companies to uniquely serialize products bearing the same manufacturer identification within a company.