03.783GPPCcustomized Applications for Mobile network Enhanced Logic (CAMEL) Phase 2Release 1998Stage 2TS
Handling of Any Time Interrogation involves the following process :
If an OSS needs the Subscriber State and/or the Location Information, the gsmSCF initiates a transaction to the HLR by sending a Any_Time_Interrogation Request. Support for this procedure is a network operator option.
Figure 56a: Process CAMEL_ATI_HLR (sheet 1)