TS 100 525 : 7.1.0

Intellectual Property Rights
Foreword
1 Scope
  1.1 References
  1.2 Abbreviations
2 Design objectives
3 Restoration indicators in location registers and
  in GPRS support nodes
  3.1 Restoration Indicators in the VLR
  3.2 Restoration Indicators in the HLR
  3.3 Restoration Indicators in the SGSN
4 Restoration of data in the VLR
  4.1 Restart of the VLR
  4.2 Restoration Procedures
5 Restoration of data in the HLR
  5.1 Restart of the HLR
  5.2 Procedures During Rest
6 Periodic location updating
7 Periodic routeing area updating
8 Stand-alone operation of the VLR
9 Stand-alone operation of the SGSN
10 Restoration of data in the GGSN
   10.1 Restart of the GGSN
   10.2 Restoration Procedures
11 Restoration of data in the SGSN
   11.1 Restart of the SGSN
   11.2 Restoration Procedures
   11.3 Use of TLLI
   11.4 VLR associations
12 Restoration of Data in an SMLC
   12.1 Restart of an SMLC
   12.2 Data Restoration for a Specific LMU
13 Restoration of Data in an LMU
Annex A (informative): Change history
History

Defines the necessary procedures to limit the effects of failure of a location register, and to restore the location register data automatically. The data stored in location registers are automatically updated in normal operation; the main information stored in a location register defines the location of each mobile station and the subscriber data required to handle traffic for each mobile subscriber. The loss or corruption of these data will seriously degrade the service offered to mobile subscribers.