3GPP 24.501 v20.0.0 — the document's own text
9.11.2.14 Service-level-AA response
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 response information element is to provide information regarding the service level authentication and authorization request, e.g. to indicate that the authentication and authorization request to the service level authentication server was successful, or to notify that service level authorization is revoked.
The Service-level-AA response information element is coded as shown in figure 9.11.2.14.1 and table 9.11.2.14.1.
The Service-level-AA response information element is a type 4 information element with length of 3 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Service-level-AA response IEI | octet 1 | |||||||
| Service-level-AA response length | octet 2 | |||||||
| 0Spare | 0Spare | C2AR | SLAR | octet 3 |
Figure 9.11.2.14.1: Service-level-AA response information element
Table 9.11.2.14.1: Service-level-AA response information element
| Service-level-AA result field (SLAR) (octet 3, bits 1 and 2) | |||
|---|---|---|---|
| Bits | |||
| 1 | 2 | ||
| 0 | 0 | No information | |
| 0 | 1 | Service level authentication and authorization was successful. | |
| 1 | 0 | Service level authentication and authorization was not successful or service level authorization is revoked. | |
| 1 | 1 | Reserved | |
| C2 authorization result field (C2AR) (octet 3, bits 3 and 4) | |||
| Bits | |||
| 3 | 4 | ||
| 0 | 0 | No information | |
| 0 | 1 | C2 authorization was successful. | |
| 1 | 0 | C2 authorization was not successful or C2 authorization is revoked. | |
| 1 | 1 | Reserved | |
| Bits 5 to 8 of octet 3 are spare and shall be coded as zero. |