25.5.3 Macro Obtain_Authent_Params_VLR

29.0023GPPMobile Application Part (MAP) specificationRelease 17TS

This macro is used by the VLR to request authentication vectors from the HLR.

Sheet 1, sheet 2, sheet 3: It is an operator option whether to allow the re-use of old authentication triplets.

Sheet 2, sheet 3: Old UMTS quintuplets shall not be re-used.

Sheet 2: if the VLR requests more authentication vectors in the same dialogue, the subsequent MAP_SEND_AUTHENTIFICATION_INFO request has no parameters.