Page 419 - Handbook of Modern Telecommunications
P. 419

3-210                   CRC Handbook of Modern Telecommunications, Second Edition

                                                           Demarcation Point


                        Telecommunications Service Provider                    LEA
                                                                Court
                                                                Order
                                                              Provisioning
                    Access       Provisioning                 of Warrant
                    Function                                    HI-1
                     (AF)          (INI-1)
                                                 Delivery                    Collection
                                Call Data Events  Function  Call Data Channel  Function
                                   (INI-2)        (DF)          (HI-2)         (CF)
                    Intercept
                    Access
                     Point       Call Content                 Call Content
                                   (INI-3)                      (HI-3)



                                 Proprietary                J-STD-025/ETSI
                            Internal Network Interface   Based Handover Interface



            FIGu RE 3.8.5  Generic view of the LI architecture.



                                                                        Law
                                               Interception          Enforcement
                                                 Order                 Agency
                                                                       (LEA)
                       Network Operator,
                       Access Provider or
                        Service Provider
                                                                        Law
                                         Deliver Requested Information  Enforcement
                                                                      Monitoring
                                                                       Facility


            FIGu RE 3.8.6  Basic information exchange.

                                                                   May be
                                                                   paper
                                 NWO/AP/SvP                      documents
                                   domain


                                                     HI1
                                                  HI2
                                                HI3


                                                               LEMF
                                                HI



            FIGu RE 3.8.7  Diagram showing hand-over interfaces between NWO/AP/SVP and LEMF.
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