Syncronization Of Mated Pair / HLR
A location register for a mobile communications network is coupled by an SS7 network for passing messages, has a mated location register at a different location to provide geographical redundancy, and has a status detector for detecting a status of the associated register, by sending a heartbeat message to the associated register. It deduces a fail if the message is returned by the signaling network. A cutover manager is arranged to enable a cutover on the basis of at least the detected status. By providing a more positive detection of a failure than merely passively interpreting a lack of response to the heartbeat, false triggering of cutovers owing to transient failures or temporary congestion, can be reduced. The cutover manager can verify the status by sending other messages by other routes, or using other criteria.
- One of the HLRs in a mated-pair becomes inaccessible (Total Route Failure) i.e. all network communication is lost to one of the HLRs
- One of the HLRs in a mated-pair goes out of service (Nodal Failure) e.g. caused as a result of a natural phenomena.
- Synchronized mated-pair HLR
- "No downtime" migration upgrade performed
- Multi-switch vendor-compatible HLR
- Integrated HLR/AuC
- Multi-protocol HLR supporting both GSM and ANSI