Patent Publication Number: US-2009234845-A1

Title: Lawful access; stored data handover enhanced architecture

Description:
TECHNICAL FIELD OF THE INVENTION 
     The present invention relates to methods in a telecommunication system to provide access to data received to a centralized storage medium from interfacing traffic nodes in the system. 
     DESCRIPTION OF RELATED ART 
     Under data preservation schemes, law enforcement authorities have the opportunity to request electronic service providers to retain particular data on a particular person or persons, whereas data retention schemes provide the retention of traffic data on all users of electronic services. At first glance, data preservation seems an attractive policy option: the number of persons on whom data will be retained and processed for law enforcement purposes is drastically reduced under this option, and consequently the associated costs for industry will be negligible. In fact, data preservation is a very useful tool for law enforcement authorities. Undoubtedly, in those cases where a suspect has been identified, or where an investigation into for example an organised crime group or terrorism cell is underway, requests for preservation of traffic data are an indispensable tool to establish the connections between suspect and their contacts and associates. At the same time, the logical limitations of this approach can be easily explained—with only data preservation as a tool, it is impossible for investigators to go back in time. Data preservation is only useful as of the moment when suspects have been identified—data retention is indispensable in many cases to actually identify those suspects. Data preservation by itself is not enough for law enforcement authorities to actually be able to investigate and solve crime and terrorism cases. To respond to this concern, a number of states have adopted, or planned to adopt, national general data retention measures. Compared to data preservation measures, which are targeted at specific users and for specific data, general data retention measures aim at requiring (some or all) operators to retain traffic data on all users so that they can be used for law enforcement purposes when necessary and allowed. 
     A data gathering system in general is disclosed in the international patent application WO 00/05852. The international patent application discloses collection and integration of software that reside on multiple interconnected platforms to a single centralized storage medium. The increasing need for and use of traffic information and data in telecommunications system has increased the burdens and costs on service providers and law enforcement alike. Monitoring can be used to provide information from users. An Intercept Mediation and Delivery Unit IMDU used for data preservation belong to prior art and is disclosed in current Lawful Interception standards (see 3GPP TS 33.108 and 3GPP TS 33.107 —Release 6). The IMDU comprises a Law Enforcement Monitoring Function LEMF. The LEMF is connected to three Mediation Functions respectively for ADMF, DF2, DF3 i.e. an Administration Function ADMF and two Delivery Functions DF2 and DF3. The Administration Function and the Delivery Function DF2 are each one connected to the LEMF via standardized handover interfaces HI1 and HI2, and connected to an intercept access point via the interfaces X1 and X2. The messages sent from LEMF to ADMF via HI1 and from the ADMF to the network via the X1 interface comprise identities of a target that is to be monitored. The Delivery Function DF2 receives Intercept Related Information IRI from the network via the X2 interface, and DF2 is used to distribute the IRI to relevant Law Enforcement Agencies via the HI2 interface. The DF3 receives Content of Communication, i.e. speech and data and is connected to LEMF via a standardized interface HI3 and to the access point via an interface X3. Commonly the ADMF, DF2 and DF3 are parts of the service provider domain and located distinctly from the LEMF. 
     An array of different kinds of stored information and data may be the subject of lawful authorities requests, and may require different legal instruments. For example, some basic information may be made publicly available by the subscriber or may be highly intrusive and revealing of personal behaviour subject to privacy expectations. Such subscriber information and traffic data that are produced and transferred along the network during the normal traffic operation of the telecommunications networks, but the access to them by the external government authority is distributed over several different channels that makes it complicate to seek and rebuild the required information. The timely production and analysis of subscriber information and traffic data has become invaluable to service providers and government authorities for an array of needs related to critical infrastructure protection and the extraction of forensic evidence for law enforcement. The increasing need for and use of this information and data has increased the burdens and costs on service providers and law enforcement alike. At the other extreme, other information are not currently preserved by the telecommunication operator network either because not meaningful for billing purposes or because a post-processing is required at operator network premises. In some other cases, part of the information that is subject to order by the government authorities is not even available (e.g., correlation on subscriber basis of the several service identities the user could use). Examples of stored information and traffic data according to prior art is attached at the end of the description part of this application. To be noted is that the attached referenced framework not necessarily is limited to the mentioned cases, i.e. the type of identities provided in the solution are dependent on national options and can be extended by adding new network elements or new identities in existing network elements. An architecture for delivery of stored information from a Service provider to a lawful Enforcement Agency is disclosed in a draft standards ETSI DTR/LI-00020 V0.0.4 (2005-06). 
     The draft standards doesn&#39;t give a solution on how to collect all the required information in the network and how to correlate them. Even if this is not the core of this invention, in this document a detailed network framework with a centralized database is proposed as pre-requisite to the solution of the identified problems. 
     In synthesis, the identified lacks/problems of the current standards are:
         1. the agencies cannot control the type of information to store, i.e. all information required by the standards are retained.   2. the current standard only foresees a simple provisioning method on demand of the stored data to the agencies (Query and Delivery processes), while it could be effective for lawful intercept purposes to deliver the retained information as soon as they become available.       

     SUMMARY OF THE INVENTION 
     The present invention relates to problem how to control type of information to store in a centralized storage medium. A further problem is that the standards only foresee a simple provisioning method on demand of the stored data, while it could be effective for Lawful Intercept purposes to deliver the retained information as soon as they become available. 
     The problems are solved by the invention by filtering data received to the centralized storage medium, which filtered data is retained in the storage medium and/or forwarded to a Law enforcement Agency or similar. 
     The solution to the problems more in detail comprises a method in a telecommunication system to provide access to data received to a centralized storage medium from interfacing traffic nodes in the system. The centralized storage medium is part of a Mediation and Delivery Function which is associated with a Law Enforcement Agency. The method comprises the following steps:
         A configuration request, preferably received from a Law Enforcement Monitoring Facility handled by the Law Enforcement Agency, is identified in the Mediation and Delivery Function. The request comprises a filtering criteria specifying type of data to be further handled.   The requested filtering criteria are configured in the Mediation and Delivery Function.   Data that fulfils the requested filtering criteria is received from the system to the centralized storage medium.   The received data is retained in the centralized storage medium and/or forwarded to the Law Enforcement Agency.       

     Thus, the object of the invention is to identify data to be accessed for Lawful Intercept purposes. This object and others are achieved by methods, arrangement, systems and articles of manufacture. 
     An advantage with the invention is that the enhanced system architecture and handover interfaces for data retention functionality lead to added value allowing managing the storage of any information in the network by mean of LI agency configuration. 
     Another advantage with the invention is that Data Retention and Lawful Intercept convergent architectures lead to:
     1) The DR architecture can also be used for lawful interception purposes, like automatic notification of target related information as soon as stored for data retention purposes.   2) Similar interfaces towards the Public Land Mobile Network could be used for both DR and LI.   

     Further advantages with the invention is that Convergent Data Retention/Lawful Interception solutions will reduce the operations expenses (opex) and enhance overall efficiency and the flexible architecture can be used for fulfilment of any data retention requirements in terms of stored subscriber and traffic information and of their provisioning to agencies (not only query modality, but also push delivery), and furthermore similar interfaces towards the agencies could be used for both Data Retention and Lawful Interception. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS  
         FIG. 1  discloses data collection from a Public Land Mobile Network to a centralized storage, and a block schematic illustration of a network based solution used for data handling according to the invention. 
         FIG. 2  discloses a signal sequence diagram according to the invention for filtering data to be further handled. 
         FIG. 3  discloses a signal sequence diagram according to the invention for realizing subscription of specified data. 
         FIG. 4  shows a flow chart illustrating some essential steps of the invention. 
         FIG. 5  discloses a block schematic illustration of a system according to the invention. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
       FIG. 1  discloses a Public Land Mobile Network PLMN. The PLMN comprises in this example Telecommunication Service Providers TSPs such as MSP: Mobile Service Provider, ISP: Internet Service Provider, MMC: Multimedia Messaging Centre, USP: User and Service Profile Database, HSS: Home Subscriber server, HLR: Home Location register, IMS: IP Multimedia system, SGSN: Serving GPRS Support Node, ITO:IT Operator database, MSC: Mobile Services Switching Centre, SCP: Service Control Point, SDP: Service Data Point. The above nodes are all well known and specified in various telecommunication standards. Telecommunication Service Providers TSPs in the course of their business operations, normally acquire and store diverse subscriber information and traffic data related to their service providers. This information and data may be related to service accounts, payments, access, assigned identifiers, and usage. The manner of acquisition and storage of this information and data is determined by a combination of business practices, legal liability protection in case of subscriber disputes, technical system capabilities or requirements, and national and local law or regulation. Examples of information and traffic data according to prior art that can be sent from the system to the data Retention Cluster is attached at the end of the description part of this application. A Mediation and Delivery Function MDF is associated with the network PLMN and with a Law Enforcement Monitoring Facility LEMF. The MDF comprises according to the invention a Data Retention Cluster DR-C that in this example comprises three Data Bases DB 1 , DB 2  and DB 3 . The cluster of Data Bases is illustrated in the proposal to be as much general as possible. Considering the large quantity of data most likely the implementation of Data Retention DR will foresee a possible distributed Data Base architecture with any kind of distribution (e.g. DB 1  for the latest retention year, DB 2  for earlier years or DB 1  for Voice calls, DB 2  for others etc.). The DR-C provides register functions to collect all possible data available in the PLMN to the cluster, when allowed by the telecommunication service. For example, the DR-C will collect MSISDN, IMSI and IMEI provided by the MSC, and will register them as referring to the same subject. Of course, the updating of the cluster depends on the policy regulating the notifications with the user, session or operator related data from the network elements towards the DB cluster (e.g. the notification could occur only at the first service access). The transportation of data from the PLMN to the Data Retention Cluster is schematically shown with filled arrows in  FIG. 1 . The transportation of data is a pre-requisite for this invention. 
     The Law Enforcement Monitoring Facility LEMF is handled by a Law Enforcement Agency. The general function of the LEMF is briefly explained in the Description of related art. For the purpose of this invention a new management function ManF and a new Lawful Interception acquisition function LiAF are introduced in the LEMF. A new configuration Function ConF is introduced in the Mediation and Delivery Function MDF. The ConF is associated with the DR-C in the MDF and with the ManF in the LEMF. A new Notification Function NotF in the MDF is introduced. The NotF is associated with the DR-C in the MDF and with the LiAF in LEMF. A new Handover Interface HI is located between the LEMF and the MDF. The purpose of the above new entities will be further explained in the embodiments. 
     A first embodiment of the invention will now be explained. In this embodiment filtering criteria will be determined by the Law Enforcement Monitoring Facility LEMF and sent to the MDF. Generally, the criteria stem from a search warrant or other authorization from a government or other authorized institution. In this example the criteria are sent from the LEMF but may also be communicated by an intermediary, such as a human operator who receives the command from an authorized source, and then inputs the criteria to the MDF. The filtering criteria specify which data to store and configure in the Data retention Cluster, for example in terms of:
         type of information: e.g., network operator related, subscriber related, communication type related.   Subscriber identity: e.g. list or ranges of IMEI, IMSI, MSISDN, NAI, IP addresses.   Information collection time window.   Storage duration.   Geographical locations.   Service type: Speech, Video, Chat, Peer-to-peer, . . .   Any other filtering criteria.       

       FIG. 2  discloses a method according to the first embodiment of the invention. The different entities LEMF, ManF, MDF, ConF, DR-C, DB 1  and MSC in  FIG. 2  corresponds to the ones that already have been have been shown in  FIG. 1 . The method according to the invention comprises the following steps:
         A data retention storage configuration request is sent  1 A from the Management Function ManF in the Law Enforcement Monitoring Facility LEMF to the Configuration Function ConF in the Mediation and Delivery Function MDF. The configuration request comprises in this example a retention request indicating that data fulfilling configured filtering criteria are to be stored in the in the centralized storage medium. The retention request can for example be represented by “storage duration&gt;0” in the filter criteria. The request in this example comprises the following filtering criteria:
           Type of information: network operator related AND subscriber related AND communication type related. With the example of Call Data Records CDR from the MSC, type of communication could be voice, SMS or data. So if the filtering criteria indicated voice, only voice related CDR is to be accessed.   Subscriber identity: any IMEI, any IMSI, any MSISDN, any NAI, specific IP address ranges. With this example, the MSC will report either one of MSIDN, IMSI or IMEI, so any sub identity is retained. In case of nodes reporting the IP address, only CDR corresponding to IP addresses within the range is to be accessed.   Information collection time window: from 2005-12-01 h 00:00 to 2006-12-31 h 00:00 means that from 2005-12-01 h 00:00 to 2006-12-31 h 00:00 only CDR or any other retrieved info within such time period is to be accessed.   Storage duration: 3 years, meaning that after 3 years the info shall be deleted.   Geographical locations: Specified jurisdiction regions. Let&#39;s for example consider an MSC serving two states, the agency could have authority only on one state, so the info are to be accessed only if the MSC reports that the call was generated by a cell within that state.   Service type: Any.   
               
     This is an example of a filter from one agency. The system will access certain data if it is requested at least by one agency (i.e. if it matches with the criteria of at least one agency).
         The data retention storage configuration request including the received filtering criteria is forwarded  1 B from the Configuration Function ConF to storage  2  in the Mediation and Delivery Function MDF, for example in DB 1 . The storage could also be a memory space in a processor unit in the MDF.   Call related billing data is sent  3  from the Mobile Services Switching Centre MSC to the MDF.   The received billing data is checked against stored filtering criteria received from the Law Enforcement Monitoring Facility LEMF. In this example the billing data fulfils all criterions in the filtering criteria.   The data retention storage configuration request stored in the MDF is checked. The indication that data fulfilling configured filtering criteria are to be stored in the centralized storage medium is noted in the MDF and the received billing data is stored/retained  4  in the data base DB 1 . Once the received information matching the configured filtering criteria is retained, the Agency who sent the filtering criteria can order the acquisition of the data via the Notification Function and via the Lawful Intercept acquisition Function at any time. The acquisition order is sent to MDF via the management function and the configuration function. In an alternative embodiment different agencies can send different filtering criteria to the MDF. Data that fulfils a stored criterion will in that case upon request be sent to the agency who specified the criterion.       

       FIG. 3  discloses a method according to a second embodiment of the invention. In this embodiment filtering criteria sent from the Law Enforcement Monitoring Facility LEMF will determine which information obtained from the system, the agency wants to subscribe to, and possibly also retain. The different entities LEMF, ManF, LiAF, MDF, NotF, ConF, DR-C, DB 1  and MSC in  FIG. 3  corresponds to the ones that already have been have been disclosed in  FIG. 1 . The method according to the invention comprises the following steps:
         A data retention storage configuration request is sent  11 A from the Management Function ManF in the Law Enforcement Monitoring Facility LEMF (handled by an agency) to the Configuration Function ConF in the Mediation and Delivery Function MDF. The configuration request in this example comprises the same filtering criteria as in the first embodiment. The request also comprises a demand, a so called subscriber request, to subscribe to data fulfilling the criteria.   The data retention storage configuration request is forwarded  11 B from the Configuration Function ConF to the data Retention Cluster DR-C.   The received filtering criteria are stored  12  in the Mediation and Delivery Function MDF, for example in DB 1 .   Multi Media Messaging Services MMS data is in this example sent  13  from the Mobile Services Switching Centre MSC to the DR-C.   The received MMS data is checked in the MDF against stored filtering criteria received from the Law Enforcement Monitoring Facility LEMF.   The data fulfils the filtering criteria.   The data retention storage configuration request stored in the MDF is checked. The indication that data fulfilling configured filtering criteria is to be subscribed by the LEMF, is detected in the MDF and the received MMS data is forwarded  15  to the LEMF without being stored, via the Notification Function NotF and via the Lawful Intercept acquisition Function LiAf.       
     The request  11 A sent by the agency from the Manage function ManF in LEMF to the Configuration Function ConF may also comprise a desire for retention of data. In that case, data fulfilling stored criterion will not only be forwarded but also stored in a Data Base in the cluster DR-C. If the agency requested “notification only” by a so-called notification request in  11 A then only an indication is notified to the LEMF, else a notification including the target related information, i.e. the data matching the filter, is forwarded. It is for example also possible to give access to specified data in the system to users with certain rights (or roles with different enabled functions). Users with these rights (or with a role allowing the functions of) are aloud to set the filtering criteria used to retain information. Other users are aloud to order query of the information. The first could for example be a minister of the Justice (as the filtering criteria for the retained information depend on the national law). The second may be used when accessing to the system by a specified client in the lawful agencies. This check of access rights may take place in the Mediation and Delivery Function upon receiving a configuration request or an acquisition order. 
       FIG. 4  discloses a flowchart in which some important steps are shown. The flowchart is to be read together with the earlier shown figures. The flowchart comprises the following steps:
         The data retention storage configuration request is sent from the Management Function ManF to the Mediation and Delivery Function MDF. A block  101  discloses this step in  FIG. 4 .   The received filtering criteria are stored in the Mediation and Delivery Function MDF. A block  102  discloses this step in  FIG. 4 .   Data is sent from the Mobile Services Switching Centre MSC to the Data Retention Cluster DR-C. A block  103  discloses this step in  FIG. 4 .   The data is checked against stored filtering criteria received from the Law Enforcement Monitoring Facility LEMF. The data fulfils the filtering criteria and the received data is handled according to the configuration request. A block  104  discloses this step in  FIG. 4 .       
     A system that can be used to put the invention into practice is schematically shown in  FIG. 5 . The block schematic constellation corresponds to the one disclosed in  FIG. 1 . A processor PROC in the Mediation and Delivery Function MDF handles the control of data from the Public Land Mobile Network PLMN and of the configuration request information received from the LEMF. The processor handles storage of received data from the PLMN to the centralized storage medium DB 1 -DB 3  and also storage of received filtering criteria and potentially additional requests from the LEMF. The storage can for example be a memory space within the processor. The comparison of filtering criteria and PLMN data is also handled by the processor. The MDF is connected to the network PLMN and to at least one Law Enforcement Monitoring Facility LEMF. A Request Function ManF in the Law Enforcement Monitoring Facility LEMF is attached to a Receipt Function ConF in the Mediation and Delivery Function MDF, which function pair is used for query processes. A Response function NotF in the Mediation and Delivery Function is attached to an Acquisition Function LiAF in the Law Enforcement Monitoring Facility, which function pair is used for delivery processes. The Handover Interface HI is located between the Request Function and the Receipt Function and between the Response Function and the Acquisition Function. Enumerated items are shown in the figure as individual elements. In actual implementations of the invention, however, they may be inseparable components of other electronic devices such as a digital computer. Thus, actions described above may be implemented in software that may be embodied in an article of manufacture that includes a program storage medium. The program storage medium includes data signal embodied in one or more of a carrier wave, a computer disk (magnetic, or optical (e.g., CD or DVD, or both), non-volatile memory, tape, a system memory, and a computer hard drive. 
     The invention is not limited to the above described and in the drawings shown embodiments but can be modified within the scope of the enclosed claims. The systems and methods of the present invention may be implemented on any of the Third Generation Partnership Project (3GPP), European Telecommunications Standards Institute (ETSI), American National Standards Institute (ANSI) or other standard telecommunication network architecture, consistent with the Communications Assistance for Law Enforcement Act (CALEA), which is a United States law requiring telephone network architectures be designed to enable authorized electronic interception. 
     The invention is of course not limited to the above described and in the drawings shown embodiments but can be modified within the scope of the enclosed claims. 
     Examples of stored data elements possible to send from the nodes in the system to the centralized Data retention Cluster: 
     
       
         
           
               
               
               
               
             
               
                   
               
               
                 Association 
                 Stored Data Element 
                 Description 
                 Network Element/DB 
               
               
                   
               
             
            
               
                 provider 
                 provider name 
                   
                 DR DB Configuration Data 
               
               
                 records 
                 provider address 
                   
                 DR DB Configuration Data 
               
               
                   
                 provider network identifier 
                   
                 DR DB Configuration Data 
               
               
                   
                 provider regulatory identifier 
                   
                 DR DB Configuration Data 
               
               
                   
                 provider other identifiers 
                   
                 DR DB Configuration Data 
               
               
                   
                 provider law enforcement agency identifier 
                   
                 DR DB Configuration Data 
               
               
                   
                 provider contact name 
                   
                 DR DB Configuration Data 
               
               
                   
                 provider contact address 
                   
                 DR DB Configuration Data 
               
               
                 subscriber 
                 subscriber name 
                   
                 IT Operator DB 
               
               
                 records 
                 subscriber status 
                 current, former, 
                 IT Operator DB 
               
               
                   
                   
                 limbo, roamer, 
               
               
                   
                   
                 prepaid, 
               
               
                   
                   
                 transient 
               
               
                   
                 subscriber account creation timestamp 
                   
                 IT Operator DB 
               
               
                   
                 subscriber account support event 
                   
                 IT Operator DB 
               
               
                   
                 subscriber account support event timestamp 
                   
                 IT Operator DB 
               
               
                   
                 subscriber account support event description 
                   
                 IT Operator DB 
               
               
                   
                 subscriber address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber contact name 
                   
                 IT Operator DB 
               
               
                   
                 subscriber contact address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber account identifier 
                   
                 IT Operator DB 
               
               
                   
                 subscriber date of birth 
                   
                 IT Operator DB 
               
               
                   
                 subscriber identity type 
                 e.g., Social 
                 IT Operator DB 
               
               
                   
                   
                 Security 
               
               
                   
                   
                 Number, driver&#39;s 
               
               
                   
                   
                 license 
               
               
                   
                 subscriber identity identifier 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment account type 
                 e.g, credit card, 
                 IT Operator DB 
               
               
                   
                   
                 bank 
               
               
                   
                 subscriber payment institution identifier 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment institution name 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment institution address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment account identifier 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment account name 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment account address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber payment account expiration date 
                   
                 IT Operator DB 
               
               
                   
                 subscriber other identifiers 
                   
                 IT Operator DB 
               
               
                   
                 subscriber dealer name 
                 where an 
                 IT Operator DB 
               
               
                   
                   
                 intermediary 
               
               
                   
                   
                 party exists 
               
               
                   
                 subscriber dealer address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber dealer account identifier for 
                   
                 IT Operator DB 
               
               
                   
                 subscriber 
               
               
                   
                 subscriber billed party name 
                   
                 IT Operator DB 
               
               
                   
                 subscriber billed party address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber billing account identifier 
                   
                 IT Operator DB 
               
               
                   
                 subscriber previous billing address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber installation address 
                   
                 IT Operator DB 
               
               
                   
                 subscriber transient access location 
                 phone booth, 
                 IT Operator DB 
               
               
                   
                   
                 hotspot, voyage 
               
               
                   
                   
                 identifier 
               
               
                   
                 subscriber transient access timestamp 
                   
                 IT Operator DB 
               
               
                   
                 subscriber Object Identifier (OID) 
                 when subscriber 
                 IT Operator DB 
               
               
                   
                   
                 is an object 
               
               
                   
                 subscriber collateral identifiers 
                 e.g. aircraft or 
                 IT Operator DB 
               
               
                   
                   
                 train assigned 
               
               
                   
                   
                 seat number 
               
               
                 network- 
                 network E.164 telecommunications number 
                 includes 
                 ISP NAS, Fixed Net., Messaging 
               
               
                 session 
                   
                 telephony, fax, 
                 Servers 
               
               
                 identifier 
                   
                 dialup data, 
               
               
                 records 
                   
                 ENUM 
               
               
                   
                 network Location Routing Number (LRN) 
                   
                 CS Nodes, GPRS 
               
               
                   
                 network Mobile Subscriber ISDN (MSISDN) 
                   
                 GPRS, CS Nodes, Messaging 
               
               
                   
                   
                   
                 Servers 
               
               
                   
                 network International Mobile Subscriber 
                   
                 GPRS, CS Nodes, Messaging 
               
               
                   
                 Identifier (IMSI) 
                   
                 Servers 
               
               
                   
                 network Urban Fleet Member Identifier 
               
               
                   
                 (UFMI) 
               
               
                   
                 network Internet Protocol address 
               
               
                   
                 network Internet domain name 
               
               
                   
                 network ENUM Fully Qualified Domain Name 
               
               
                   
                 (FQDN) identifier 
               
               
                   
                 network Uniform Resource Identifier (URI) 
               
               
                   
                 network File Transfer Protocol (FTP) 
               
               
                   
                 identifier 
               
               
                   
                 network Session Initiation Protocol (SIP) 
               
               
                   
                 identifier 
               
               
                   
                 network H.323 identifier 
               
               
                   
                 Hypertext Transfer Protocol Secure (HTTPS) 
               
               
                   
                 identifier 
               
               
                   
                 network session access password 
               
               
                 service 
                 service equipment vendor and model 
                   
                 DCR 
               
               
                 equipment 
                 service equipment physical serial number 
                   
                 DCR 
               
               
                 records 
                 service equipment International Mobile 
                   
                 DCR, EIR 
               
               
                   
                 Equipment Identifier (IMEI) 
               
               
                   
                 service equipment Electronic Product or 
               
               
                   
                 Serial Number (EPN, ESN) 
               
               
                   
                 service equipment Mobile Equipment 
                 a 56-bit mobile 
               
               
                   
                 IDentifier (MEID) 
                 equipment 
               
               
                   
                   
                 identifier used 
               
               
                   
                   
                 for new terminals 
               
               
                   
                   
                 as the alternative 
               
               
                   
                   
                 to the 32-bit ESN 
               
               
                   
                 service equipment pseudo-ESN (pESN) 
                 a Pseudo-ESN 
               
               
                   
                   
                 0x80 as its 
               
               
                   
                   
                 ‘Manufacturer 
               
               
                   
                   
                 Code’, followed 
               
               
                   
                   
                 by the 24 least 
               
               
                   
                   
                 significant bits of 
               
               
                   
                   
                 the SHA-1 hash 
               
               
                   
                   
                 of the 56 bit 
               
               
                   
                   
                 MEID is used 
               
               
                   
                   
                 when MEID isn&#39;t 
               
               
                   
                   
                 implemented in a 
               
               
                   
                   
                 system 
               
               
                   
                 service equipment Mobile Identification 
               
               
                   
                 Number (MIN) 
               
               
                   
                 service equipment Network media access 
                   
                 ISP NAS 
               
               
                   
                 identifier (MAC) 
               
               
                   
                 service equipment digital certificate 
               
               
                 porting 
                 Location Routing Number (LRN) 
                   
                 Number Portability Swtiching Node 
               
               
                 records 
                   
                   
                 (e. SCP) 
               
               
                   
                 Jurisdiction Information Parameter (JIP) 
                   
                 Number Portability Swtiching Node 
               
               
                   
                   
                   
                 (e. SCP) 
               
               
                   
                 Mobile Directory Number (MDN) 
                   
                 Number Portability Swtiching Node 
               
               
                   
                   
                   
                 (e. SCP) 
               
               
                   
                 SOA E.164 Dialed Number (DN) 
                   
                 Number Portability Swtiching Node 
               
               
                   
                   
                   
                 (e. SCP) 
               
               
                   
                 SOA subscriber port request received 
                   
                 Number Portability Swtiching Node 
               
               
                   
                 timestamp 
                   
                 (e. SCP) 
               
               
                   
                 SOA subscriber port request transmitted to 
                   
                 Number Portability Swtiching Node 
               
               
                   
                 national portability database system 
                   
                 (e. SCP) 
               
               
                   
                 timestamp 
               
               
                 telephony 
                 Telephone CDR telephony identifier 
                   
                 BGW 
               
               
                 usage detail 
                 Telephone CDR account identifier 
                   
                 BGW 
               
               
                 records 
                 Telephone CDR source (switch, subscriber 
                   
                 BGW 
               
               
                   
                 database, archive) 
               
               
                   
                 Telephone CDR IMSI/MSISDN/IMEI 
                   
                 BGW 
               
               
                   
                 mappings 
               
               
                   
                 Telephone CDR Record of mobile stored or 
                   
                 BGW 
               
               
                   
                 dynamic registration 
               
               
                   
                 Telephone CDR start of call timestamp 
                   
                 BGW 
               
               
                   
                 Telephone CDR end of call timestamp 
                   
                 BGW 
               
               
                   
                 Telephone CDR duration of call 
                   
                 BGW 
               
               
                   
                 Telephone CDR type of call (incoming, 
                   
                 BGW 
               
               
                   
                 outgoing, conference, forwarded, bearer) 
               
               
                   
                 Telephone CDR call number 
                   
                 BGW 
               
               
                   
                 physical/presentational/network assigned 
               
               
                   
                 Caller Line Identity (CLI) 
               
               
                   
                 Telephone CDR call number CLI type 
                   
                 BGW 
               
               
                   
                 (physical, presentational, network assigned) 
               
               
                   
                 Telephone CDR call number Dialed Number 
                   
                 BGW 
               
               
                   
                 Identifier (DNI) 
               
               
                   
                 Telephone CDR call number International 
                   
                 BGW 
               
               
                   
                 Mobile Subscriber Identifier (IMSI) 
               
               
                   
                 Telephone CDR call number International 
                   
                 BGW 
               
               
                   
                 Mobile Equipment Identifier (IMEI) 
               
               
                   
                 Telephone CDR call number Urban Fleet 
                   
                 BGW 
               
               
                   
                 Member Identifier (UFMI) 
               
               
                   
                 Telephone CDR call number 
                   
                 BGW 
               
               
                   
                 Conference/exchange/divert numbers 
               
               
                   
                 Telephone CDR identification numbers of 
                   
                 BGW 
               
               
                   
                 connected end user device 
               
               
                   
                 Telephone CDR IMEI type (physical, 
                   
                 BGW 
               
               
                   
                 presentational, network assigned) 
               
               
                   
                 Telephone CDR location data at start and/or 
                   
                 BGW 
               
               
                   
                 end of call (lat/long reference or other) 
               
               
                   
                 Telephone CDR geographic location of end 
                   
                 BGW 
               
               
                   
                 user device, 
               
               
                   
                 Telephone CDR cell site data during call 
                   
                 BGW 
               
               
                   
                 Telephone CDR cell site location 
                   
                 BGW 
               
               
                   
                 IMSI &amp; Mobile Station Integrated Services 
                 global titles of 
                 BGW 
               
               
                   
                 Digital Network (MSISDN) global titles 
                 equipment 
               
               
                   
                   
                 communicating 
               
               
                   
                   
                 with or about the 
               
               
                   
                   
                 subscriber 
               
               
                 GPRS &amp; 3G 
                 3G encryption key sets of GSM triples 
                   
                 AuC 
               
               
                 Call Detail 
                 3G encryption key sets of 3G quintuples 
                   
                 AuC 
               
               
                 Record 
                 3G encryption key any other provider keys 
                   
                 AuC 
               
               
                 Supplements 
                 3G CDR 
                 [Translated and 
                 BGW 
               
               
                   
                   
                 imported ETSI 
               
               
                   
                   
                 ASN.1 module 
               
               
                   
                   
                 “TS32215- 
               
               
                   
                   
                 DataTypes {itu-t 
               
               
                   
                   
                 0 identified- 
               
               
                   
                   
                 organization 4 
               
               
                   
                   
                 etsi 0 
               
               
                   
                   
                 mobileDomain 0 
               
               
                   
                   
                 umts-Operation- 
               
               
                   
                   
                 Maintenance3 
               
               
                   
                   
                 ts-32-215 215 
               
               
                   
                   
                 informationModel 
               
               
                   
                   
                 0 asn1Module 
               
               
                   
                   
                 2”], including 
               
               
                   
                 3G CDR start of connection timestamp 
                   
                 BGW 
               
               
                   
                 3G CDR International Mobile Subscriber 
                   
                 BGW 
               
               
                   
                 Identifier (IMSI) 
               
               
                   
                 3G CDR IP address assigned 
                   
                 BGW 
               
               
                   
                 3G CDR mobile data exchanged with foreign 
                   
                 BGW 
               
               
                   
                 operators 
               
               
                 Short 
                 MSD message sent timestamp 
                   
                 Messaging Service Provider (e.g. 
               
               
                 Message 
                   
                   
                 SMS-C, MMC) 
               
               
                 Service 
                 MSD message delivered timestamp 
                   
                 Messaging Service Provider (e.g. 
               
               
                 (SMS), 
                   
                   
                 SMS-C, MMC) 
               
               
                 Enhanced 
                 MSD message received timestamp 
                   
                 Messaging Service Provider (e.g. 
               
               
                 Messaging 
                   
                   
                 SMS-C, MMC) 
               
               
                 Service (EMS) 
                 MSD calling number 
                   
                 Messaging Service Provider (e.g. 
               
               
                 and 
                   
                   
                 SMS-C, MMC) 
               
               
                 Multimedia 
                 MSD calling number IMEI 
                   
                 Messaging Service Provider (e.g. 
               
               
                 Messaging 
                   
                   
                 SMS-C, MMC) 
               
               
                 Service (MMS) 
                 MSD called number 
                   
                 Messaging Service Provider (e.g. 
               
               
                 MessageDetail 
                   
                   
                 SMS-C, MMC) 
               
               
                 Records 
                 MSD called number IMEI 
                   
                 Messaging Service Provider (e.g. 
               
               
                   
                   
                   
                 SMS-C, MMC) 
               
               
                   
                 MSD location data when messages sent and 
                   
                 Messaging Service Provider (e.g. 
               
               
                   
                 received (lat/long reference or grid) 
                   
                 SMS-C, MMC) 
               
               
                 Instant 
                 Instant Messenger name 
                   
                 Messaging Service Provider (e.g. 
               
               
                 Message 
                   
                   
                 SMS-C, MMC) 
               
               
                 Service 
                 Instant Messenger password 
                   
                 Messaging Service Provider (e.g. 
               
               
                 records 
                   
                   
                 SMS-C, MMC) 
               
               
                 Presence and 
                 Geolocation-time correlations 
                 for devices, 
                 Messaging Service Provider 
               
               
                 Availability 
                   
                 applications, 
                 (Presence Server) 
               
               
                 Management 
                   
                 subscribers 
               
               
                 Services 
                 Availability algorithms 
                   
                 Messaging Service Provider 
               
               
                   
                   
                   
                 (Presence Server) 
               
               
                   
                 Collateral identifiers 
                 e.g. actual 
                 Messaging Service Provider 
               
               
                   
                   
                 aircraft or train 
                 (Presence Server) 
               
               
                   
                   
                 assigned seat 
               
               
                   
                   
                 number 
               
               
                   
                 Buddy lists 
                   
                 Messaging Service Provider 
               
               
                   
                   
                   
                 (Presence Server) 
               
               
                   
                 Availability messages 
               
               
                 eMail System 
                 eMail address 
                   
                 E-Mail Server 
               
               
                 Usage Detail 
                 eMail Internet Message Access Protocol 
                   
                 E-Mail Server 
               
               
                 Records 
                 (IMAP) identifier 
               
               
                   
                 eMail Post Office Protocol (POP) identifier 
                   
                 E-Mail Server 
               
               
                   
                 eMail server-server protocol 
                 SMTP, X.400, 
                 E-Mail Server 
               
               
                   
                   
                 other 
               
               
                   
                 eMail server-user client protocol 
                 SMTP/POP, 
                 E-Mail Server 
               
               
                   
                   
                 IMAP, HTTP, 
               
               
                   
                   
                 SSL, SSH, other 
               
               
                   
                 eMail server type 
                 provider MX, 
                 E-Mail Server 
               
               
                   
                   
                 backup MX or 
               
               
                   
                   
                 remote MX 
               
               
                   
                   
                 server 
               
               
                   
                 eMail server disposition of outbound 
                   
                 E-Mail Server 
               
               
                   
                 bounced messages 
               
               
                   
                 eMail server disposition of inbound bounced 
                   
                 E-Mail Server 
               
               
                   
                 messages 
               
               
                   
                 eMail server SNMP data available 
                   
                 E-Mail Server 
               
               
                   
                 eMail subscriber account user name 
                   
                 E-Mail Server 
               
               
                   
                 eMail subscriber account privileges 
                   
                 E-Mail Server 
               
               
                   
                 eMail subscriber account management 
                 e.g., http 
                 E-Mail Server 
               
               
                   
                 protocol 
               
               
                   
                 eMail subscriber account management URI 
                   
                 E-Mail Server 
               
               
                   
                 eMail subscriber account user digital 
                   
                 E-Mail Server 
               
               
                   
                 certificate 
               
               
                   
                 eMail subscriber account auto response 
                   
                 E-Mail Server 
               
               
                   
                 message 
               
               
                   
                 eMail server subscriber access login 
                   
                 E-Mail Server 
               
               
                   
                 timestamp 
               
               
                   
                 eMail server subscriber access logout 
                 if session 
                 E-Mail Server 
               
               
                   
                 timestamp 
               
               
                   
                 eMail server subscriber IP address used for 
                   
                 E-Mail Server 
               
               
                   
                 access 
               
               
                   
                 eMail server subscriber access security 
                   
                 E-Mail Server 
               
               
                   
                 protocol 
               
               
                   
                 eMail server subscriber account user digital 
                   
                 E-Mail Server 
               
               
                   
                 certificate 
               
               
                   
                 eMail server subscriber user application 
                   
                 E-Mail Server 
               
               
                   
                 client used for access 
               
               
                   
                 eMail server subscriber account 
                   
                 E-Mail Server 
               
               
                   
                 management feature type 
               
               
                 eMail 
                 eMail server subscriber account feature set 
                   
                 E-Mail Server 
               
               
                 Message 
                 timestamp 
               
               
                 Detail Records 
                 eMail message action 
                 sent, retrieved, 
                 E-Mail Server 
               
               
                   
                   
                 received, 
               
               
                   
                   
                 autoforwarded 
               
               
                   
                 eMail message server timestamp 
                   
                 E-Mail Server 
               
               
                   
                 eMail message sender IP address 
                   
                 E-Mail Server 
               
               
                   
                 eMail message sender or relay host DNS 
                   
                 E-Mail Server 
               
               
                   
                 Fully Quaified Domain Name or X.400 
               
               
                   
                 domain name 
               
               
                   
                 eMail message sending or relay host IP or 
                   
                 E-Mail Server 
               
               
                   
                 other network address 
               
               
                   
                 eMail message account user name 
                   
                 E-Mail Server 
               
               
                   
                 eMail message message identifier 
                   
                 E-Mail Server 
               
               
                   
                 eMail message envelope timestamp 
                   
                 E-Mail Server 
               
               
                   
                 eMail message envelope “to” eMail 
                 including all 
                 E-Mail Server 
               
               
                   
                 addresses 
                 related types, 
               
               
                   
                   
                 e.g., cc, bcc, fcc, 
               
               
                   
                   
                 lcc 
               
               
                   
                 eMail message envelope “return to” eMail 
                   
                 E-Mail Server 
               
               
                   
                 address 
               
               
                   
                 eMail message envelope “from” eMail 
                   
                 E-Mail Server 
               
               
                   
                 address 
               
               
                   
                 eMail message message size 
                   
                 E-Mail Server 
               
               
                   
                 eMail message attachment indicators 
                   
                 E-Mail Server 
               
               
                   
                 eMail message envelope digital certificate 
                 if signed or 
                 E-Mail Server 
               
               
                   
                   
                 encrypted 
               
               
                   
                 eMail message forwarded email address 
                   
                 E-Mail Server 
               
               
                   
                 eMail message sent forwarded IP address 
                   
                 E-Mail Server 
               
               
                   
                 eMail message forwarded timestamp 
                   
                 E-Mail Server 
               
               
                   
                 eMail message Iterations to message 
                   
                 E-Mail Server 
               
               
                   
                 headers or content rewrite tables used 
               
               
                   
                 eMail message alterations to message 
                   
                 E-Mail Server 
               
               
                   
                 headers or content retention time of rewrite 
               
               
                   
                 tables 
               
               
                 directory 
                 directoryMobile Directory Number (MDN) 
                   
                 IT Operator DB 
               
               
                 records 
                 directory Lightweight Directory Access 
                   
                 IT Operator DB 
               
               
                   
                 Protocol (LDAP) identifier 
               
               
                   
                 directory X.500 identifier 
                   
                 IT Operator DB 
               
               
                   
                 directory IRIS identifier 
                   
                 IT Operator DB 
               
               
                   
                 directory Finger identifier 
                   
                 IT Operator DB 
               
               
                   
                 directory other 
                   
                 IT Operator DB 
               
               
                 security 
                 PKI public key identifier 
                   
                 AAA 
               
               
                 application 
                 key passwords 
                   
                 AAA 
               
               
                 records 
               
               
                 Internet 
                 eMail message alterations to message 
                   
                 ISP NAS 
               
               
                 Access 
                 headers or content associated information 
               
               
                 System Usage 
                 retained 
               
               
                 Detail Records 
                 Internet access system access type 
                 dialup, hotspot, 
                 ISP NAS 
               
               
                   
                   
                 always-on 
               
               
                   
                 Internet access system connection protocol 
                   
                 ISP NAS 
               
               
                   
                 Internet access system access timestamp 
                   
                 ISP NAS 
               
               
                   
                 Internet access system dropped timestamp 
                   
                 ISP NAS 
               
               
                   
                 Internet access system authentication user 
                   
                 ISP NAS 
               
               
                   
                 name 
               
               
                   
                 Internet access system password 
                   
                 ISP NAS 
               
               
                   
                 Internet access system authentication 
                   
                 ISP NAS 
               
               
                   
                 certificate 
               
               
                   
                 Internet access system access IP address 
                   
                 ISP NAS 
               
               
                   
                 assigned 
               
               
                   
                 Internet access system connection speed 
                   
                 ISP NAS 
               
               
                   
                 Internet access system subscriber Calling 
                   
                 ISP NAS 
               
               
                   
                 Line Identifier (CLI) 
               
               
                   
                 Internet access system provider terminal 
                   
                 ISP NAS 
               
               
                   
                 server dialup number 
               
               
                   
                 Internet access system ADSL end point 
                   
                 ISP NAS 
               
               
                   
                 Internet access system MAC address 
                   
                 ISP NAS 
               
               
                   
                 Internet access system IPSEC or other 
                   
                 ISP NAS 
               
               
                   
                 tunnels 
               
               
                   
                 Internet access system security tunnel 
                   
                 ISP NAS 
               
               
                   
                 authentication user name 
               
               
                   
                 Internet access system security tunnel log-in 
                   
                 ISP NAS 
               
               
                   
                 timestamp 
               
               
                 Internet 
                 Internet access system security tunnel IP 
                   
                 ISP NAS 
               
               
                 Service 
                 address connecting to tunnel 
               
               
                 System Detail 
                 Internet service type 
                 WWW, FTP, 
                 ISP NAS 
               
               
                 Records 
                   
                 DNS, LDAP, 
               
               
                   
                 Internet service access type 
                 provider, 
                 ISP NAS 
               
               
                   
                   
                 customer, 
               
               
                   
                   
                 shared, agent 
               
               
                   
                 Internet service access proxy configuration 
                 in use, fixed, end 
                 ISP NAS 
               
               
                   
                   
                 user 
               
               
                   
                   
                 configurable 
               
               
                   
                 Internet service access ports 
                   
                 ISP NAS 
               
               
                   
                 Internet service resource record 
                   
                 ISP NAS 
               
               
                   
                 Internet service NAPTR resolution 
                 If resource 
                 ISP NAS 
               
               
                   
                   
                 record is NAPTR 
               
               
                 Internet 
                 Internet service firewall or autoforwarding 
                   
                 ISP NAS 
               
               
                 Service Usage 
                 identifier 
               
               
                 Detail Records 
                 Internet service usage type 
                 WWW, FTP, 
                 ISP NAS 
               
               
                   
                   
                 DNS, LDAP, 
               
               
                   
                   
                 Whois, Rwhois, 
               
               
                   
                   
                 SIP, H.323 
               
               
                   
                 Internet service usage timestamp 
                   
                 ISP NAS 
               
               
                   
                 Internet service usage IP address 
                   
                 ISP NAS 
               
               
                   
                 Internet service usage reverse DNS 
                   
                 ISP NAS 
               
               
                   
                 resolution name 
               
               
                   
                 Internet service query input information 
                   
                 ISP NAS 
               
               
                   
                 Internet service usage digital certificate 
                   
                 ISP NAS 
               
               
                   
                 Internet service returned information 
                 Includes files 
                 ISP NAS 
               
               
                   
                   
                 downloaded, 
               
               
                   
                   
                 information 
               
               
                   
                   
                 returned 
               
               
                   
                 Internet service usage information uploaded 
                 Records, 
                 ISP NAS 
               
               
                   
                   
                 response 
               
               
                   
                   
                 messages or 
               
               
                   
                   
                 files uploaded 
               
               
                   
                 Internet service usage feature change 
                   
                 ISP NAS 
               
               
                   
                 Internet service usage reverse connection IP 
                   
                 ISP NAS 
               
               
                   
                 address 
               
               
                 Roaming 
                 Internet service usage reverse data 
                   
                 HSS 
               
               
                 System and 
                 transferred to visitor host (e.g., cookie) 
               
               
                 Detail Records 
                 roaming detail record access timestamp 
                   
                 HLR/HSS 
               
               
                   
                 roaming detail record IMSI data request 
                   
                 HLR 
               
               
                   
                 roaming detail record IMSI data returned 
                   
                 HLR 
               
               
                   
                 roaming detail record MSISDN data request 
                   
                 HLR 
               
               
                 Prepaid 
                 roaming detail record MSIDFN data returned 
                   
                 IN, BGW 
               
               
                 Service 
                 Prepaid Service method of activation 
                   
                 IN, BGW 
               
               
                 System 
                 Prepaid Service activation timestamp 
                   
                 IN, BGW 
               
               
                 Prepaid 
                 Prepaid Service activation means 
                   
                 IN, BGW 
               
               
                 Service Call 
                 prepaid service call start timestamp 
                   
                 IN, BGW 
               
               
                 Detail Records 
                 prepaid service call end timestamp 
                   
                 IN, BGW 
               
               
                   
                 prepaid service call type of service 
                   
                 IN, BGW 
               
               
                   
                 prepaid service call user identification 
                   
                 IN, BGW 
               
               
                   
                 prepaid service call associated number 
                   
                 IN, BGW 
               
               
                 billing records 
                 billing account name 
                   
                 BGW 
               
               
                   
                 billing account identifier 
                   
                 BGW 
               
               
                   
                 billing statement date timestamp 
                   
                 BGW 
               
               
                   
                 billing period start timestamp 
                   
                 BGW 
               
               
                   
                 billing period stop timestamp 
                   
                 BGW 
               
               
                   
                 billing line item 
                   
                 BGW 
               
               
                   
                 billing access and other charges 
                   
                 BGW 
               
               
                   
                 billing total amount 
                   
                 BGW 
               
               
                   
                 billing associated image file identifier 
                   
                 BGW 
               
               
                 payment 
                 payment received timestamp 
                   
                 BGW 
               
               
                 records 
                 payment billing reference 
                   
                 BGW 
               
               
                   
                 payment received amount 
                   
                 BGW 
               
               
                   
                 payment instrument type 
                   
                 BGW 
               
               
                   
                 subscriber payment institution identifier 
                   
                 BGW 
               
               
                   
                 subscriber payment institution name 
                   
                 BGW 
               
               
                   
                 subscriber payment institution address 
                   
                 BGW 
               
               
                   
                 subscriber payment account identifier 
                   
                 BGW 
               
               
                   
                 subscriber payment account name 
                   
                 BGW 
               
               
                   
                 subscriber payment account address 
                   
                 BGW 
               
               
                 Management 
                 [specification mechanism needed] 
                 (data elements 
                 OSS 
               
               
                 Information 
                   
                 available through 
               
               
                 Base records 
                   
                 the network 
               
               
                   
                   
                 management 
               
               
                   
                   
                 framework. See 
               
               
                   
                   
                 IETF STD 58, 
               
               
                   
                   
                 RFC3410) 
               
               
                 Collateral 
                 prepaid service call location 
               
               
                 System and 
                 Retention relative to data to which it is 
               
               
                 Detail Data 
                 related 
               
               
                   
                 Data needed to interpret other 
                 for example -the 
               
               
                   
                 communications data 
                 mapping 
               
               
                   
                   
                 between cell 
               
               
                   
                   
                 mast identifiers 
               
               
                   
                   
                 and their location 
               
               
                 Stored content 
                 translation of dialing 
                 as supported by 
                 Messaging Service Provider (e.g. 
               
               
                 (including 
                   
                 IN networks 
                 SMS-C, MMC) 
               
               
                 voicemail, 
                 Stored content type 
                 voicemail, eMail 
                 Messaging Service Provider (e.g. 
               
               
                 eMail and 
                   
                 and SMS 
                 SMS-C, MMC) 
               
               
                 SMS) 
                 Stored content stored messages available 
                   
                 Messaging Service Provider (e.g. 
               
               
                   
                   
                   
                 SMS-C, MMC) 
               
               
                   
                 Stored content access location 
                   
                 Messaging Service Provider (e.g. 
               
               
                   
                   
                   
                 SMS-C, MMC) 
               
               
                   
                 Stored content access code 
                   
                 Messaging Service Provider (e.g. 
               
               
                   
                   
                   
                 SMS-C, MMC) 
               
               
                   
                 Stored content length of time messages are 
               
               
                   
                 stored 
               
               
                 forensic 
                 Stored content length of storage after access 
                   
                 Stored in DR DB Unit 
               
               
                 information 
                 Timestamp offset 
                 Measured offset 
                 Stored in DR DB Unit 
               
               
                   
                   
                 of furnished 
               
               
                   
                   
                 timestamp 
               
               
                   
                   
                 values during the 
               
               
                   
                   
                 same hour as 
               
               
                   
                   
                 collected NTPQ 
               
               
                   
                   
                 offset value 
               
               
                   
                   
                 determined 
               
               
                   
                   
                 against a public 
               
               
                   
                   
                 NTP primary or 
               
               
                   
                   
                 secondary time 
               
               
                   
                   
                 server