Section: Annex H (normative): Usage of the AMF
Content: The 16 bits in the AMF are numbered from "0" to "15" where bit "0" is the most significant bit and bit "15" is the least significant bit (see subclause 3.4) Bit "0" is called the "AMF separation bit". It is used for the purposes of EPS (Evolved Packet System) and is specified in - TS 33.401[ 3GPP System Architecture Evolution (SAE); Security architecture ]  [28] for E-UTRAN access to EPS; - TS 33.402[ 3GPP System Architecture Evolution (SAE); Security aspects of non-3GPP accesses ]  [29] for non-3GPP access to EPS; - TS 33.501[ Security architecture and procedures for 5G System ]  [42] for 5G-RAN access to 5G System. Bits "1" to "7" are reserved for future standardization use. Bits "1" to "7" shall be set to 0 while not yet specified for a particular use. Bits "8" to "15" can be used for proprietary purposes. See Annex F for examples usages.