Section: 10.5.3.2.1 Authentication Response Parameter (extension) (UMTS authentication challenge only)
Content: This IE is included if the authentication response parameter RES is longer than 4 octets (UMTS only) and therefore does not fit in the Authentication Response Parameter field (see 10.5.3.2). The Authentication Response parameter (extension) IE is coded as shown in figure 10.5.76.1/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  and table 10.5.90.1/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] . The Authentication Response parameter (extension) IE is a type 4 information element with a minimum length of 3 octets and a maximum length of 14 octets. Figure 10.5.76.1/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ]  Authentication Response Parameter (extension) information element (UMTS authentication challenge only) Table 10.5.90.1/3GPP TS 24.008[ Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 ] : Authentication Response Parameter (extension) information element (RES)