Section: 28.3.2.8 AMF Instance FQDN
Content: The AMF Instance FQDN shall uniquely identify an AMF instance. The AMF Instance FQDN shall be constructed as: pt<AMF Pointer>.set<AMF Set Id>.region<AMF Region Id>.amfi.5gc.mnc<MNC>.mcc<MCC>.3gppnetwork.org where - <MNC> = 3 digits - <MCC> = 3 digits If there are only 2 significant digits in the MNC, one "0" digit shall be inserted at the left side to fill the 3 digits coding of MNC in the AMF Instance FQDN. - <AMF Pointer>, <AMF Set Id> and <AMF Region Id> are the hexadecimal strings of the AMF Pointer, AMF Set ID and AMF Region ID. If there are less than 2 significant digits in <AMF Pointer> or <AMF Region Id>, "0" digit(s) shall be inserted at the left side to fill the 2 digits coding of the AMF Pointer or AMF Region Id respectively. If there are less than 3 significant digits in <AMF Set Id>, "0" digit(s) shall be inserted at the left side to fill the 3 digits coding. As an example, the AMF Instance FQDN for the AMF Pointer 12 (hexadecimal), AMF Set 1, AMF Region 48 (hexadecimal), MCC 345 and MNC 12 is coded as: "pt12.set001.region48.amfi.5gc.mnc012.mcc345.3gppnetwork.org"