externalDocs
Description: 3GPP TS 29.503 Unified Data Management Services, version 15.2.1
URL: 'http://www.3gpp.org/ftp/Specs/archive/29_series/29.503/'
Description: 3GPP TS 29.503 Unified Data Management Services, version 15.2.1
URL: 'http://www.3gpp.org/ftp/Specs/archive/29_series/29.503/'