HLR functions

The functions for an HLR are separated in the following capabilities:

Location Management

These functions are called by VLRs as the already authenticated cell phone moves from a cell or area to another.

• updateLocation
• cancelLocation
• purgeMS
• updateGprsLocation
• anyTimeInterrogation

Subscriber data management

These operations add, remove or retrieve various data about the subscriber.

• insertSubscriberData
• deleteSubscriberData
• restoreData

Routing

• sendRoutingInfoForGprs
• sendRoutingInfoForLCS

Call handling

• provideRoamingNumber
• statusReport

Tracing subscriber's activity and calls

• activateTraceMode
• deactivateTraceMode

Supplementary Services [2]

These functions are for controlling and querying some standard supplementary services (like call deflection or barring) from the phone's native user interface.

• registerSS
• eraseSS
• activateSS
• deactivateSS
• interrogateSS
• registerPassword
• getPassword
• processUnstructuredSs
• unstructuredSs-Request
• unstructuredSs-Notify

Error recovery

• reset
• forwardCheckSS-Indication
• failureReport

Miscellaneous

• sendIMSI
• setReportingState

References

• 1 - ETSI TS 100 974 V7.15.0 (2004-03) p40
• 2 - ETSI EN 300 928