3GPP 24.501 v20.0.0 — the document's own text
9.11.2.12 Service-level-AA server address
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The purpose of the Service-level-AA server address information element is to carry the address of the service level authentication and authorization server.
The Service-level-AA server address information element is coded as shown in figure 9.11.2.12.1 and table 9.11.2.12.1.
The Service-level-AA server address information element is a type 4 information element with minimum length of 4 octets and maximum length of 257 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Service-level-AA server address IEI | octet 1 | |||||||
| Service-level-AA server address length | octet 2 | |||||||
| Service-level-AA server address type | octet 3 | |||||||
| Service-level-AA server address | octets 4-z |
Figure 9.11.2.12.1: Service-level-AA server address information element
Table 9.11.2.12.1: Service-level-AA server address information element
| Service-level-AA server address type (octet 3):Bits | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | ||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | IPv4 | |
| 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | IPv6 | |
| 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | IPv4v6 | |
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | FQDN | |
| All other values are spare. If received they shall be ignored. | |||||||||
| If the service-level-AA server address type indicates IPv4, then the service-level-AA server address field contains an IPv4 address in octet 4 to octet 7. | |||||||||
| If the service-level-AA server address type indicates IPv6, then the service-level-AA server address field contains an IPv6 address in octet 4 to octet 19. | |||||||||
| If the service-level-AA server address type indicates IPv4v6, then the service-level-AA server address field contains two IP addresses. The first IP address is an IPv4 address in octet 4 to octet 7. The second IP address is an IPv6 address in octet 8 to octet 23. | |||||||||
| If the service-level-AA server address type indicates FQDN, octet 4 to octet z is encoded as defined in clause 19.4.2.1 in 3GPP TS 23.003 [4]. | |||||||||