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    /**
     * @desc This group contains all test case for IUT acting as a MME
     */
    group mmeRole {
        
        /**
         * @desc This group contains all test case for IUT acting as a MME
         * @see ETSI TS 103 202-2 V0.0.2 (2014-03), clause 5.2.1
         */
        group pathManagement {
            
            /**
             * @desc    Verify the successful answering of Echo Request with Echo Response
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_ECHO_REQUEST and PICS_ECHO_REPLY
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC and RAN network available
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Power on the MME and S-GW
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger MME to initiate the Echo Request Procedure
             *      }
             *      then {
             *          GTP Echo Request is sent which contains the Recovery Information Element (IE)
             *          and, the Recovery IE is either incorrect or has the wrong format
             *          and, the Echo Response contains the Restart counter and a negative Cause value
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_PM_01
             * @reference   ETSI TS 129 274, clauses 7.1.1 & 7.1.2
             */
            
            /**
             * @desc    Verify the successful answering of Echo Request with Echo Response with a negative cause value
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_ECHO_REQUEST and PICS_ECHO_REPLY
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC and RAN network available
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Power on the MME and S-GW
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger MME (or simulator) initiates the Echo Request Procedure with an error
             *      }
             *      then {
             *          GTP Echo Request is sent which contains the Recovery Information Element (IE)
             *          and, the Recovery IE is either incorrect or has the wrong format
             *          and, the Echo Response contains the Restart counter and a negative Cause value
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_PM_02
             * @reference   ETSI TS 129 274, clauses 7.1.1 & 7.1.2
             */
            
            /**
             * @desc    Verify the GTP version that the sending entity supports.  If a GTP network element receives a message of unsupported GTP version, verify that the network element returns a Version Not Supported Indication message and that it discards the received message
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_VERSION_NOT_SUPPORTED
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC and RAN network available
             *      Network should be configured as show in Figure 3 above.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Power on the MME and S-GW
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          MME (or simulator) initiates the Version Not supported Procedure by sending a GTP message which contains a version higher than the latest version
             *      }
             *      then {
             *          Verify that any given GTP message (e.g. Echo Request) contains a version that is higher than the latest supported version.
             *          and, verify that the Version not Supported Indication contains the GTP version the network element  currently supports
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_PM_03
             * @reference   ETSI TS 129 274, clauses 7.1.3
             */
            
        } // End of group pathManagement 
        
        /**
         * @desc This group contains all test case for IUT acting as a MME
         * @see ETSI TS 103 202-2 V0.0.2 (2014-03), clause 5.2.2
         */
        group tunnelManagement {
            
            /**
             * @desc    Validate the Create Session Request/Response and the Modify Bearer Request/Response Procedure between MME and S-GW as part of the ATTACH Procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_CREATE_SESSION_REQUEST and PICS_MME_CREATE_BEARER_RESPONSE and PICS_MME_MODIFY_BEARER_REQUEST
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE are available.
             *      MME is configured the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          UE registers with and attaches to the network to receive services that require registration
             *          A default EPS bearer is setup as result of attachment
             *          This forces the Create Session and Modify Bearer ProcedureTrigger MME (or simulator) initiates the Echo Request Procedure with an error
             *      }
             *      then {
             *          Verify that the MME sends Create Session Request and receives the Create Session Response
             *          and, verify that the MME sends the Modify Bearer Request and receives the Modify Bearer Response as part of the Attach procedure
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_01
             * @reference   ETSI TS 129 274, clauses 7.2.1, 7.2.2, 7.2.7, 7.2.8
             */
            
            /**
             * @desc    Validate that S-GW is able to request the MME to start Create Bearer Request Procedure.
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_CREATE_SESSION_REQUEST and PICS_MME_CREATE_BEARER_RESPONSE and PICS_MME_MODIFY_BEARER_REQUEST
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE are available.
             *      MME is configured the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE attaches to the network. During the attach procedure the S-GW sends the Create Bearer Request message to the MME as part of the Dedicated Bearer Activation Procedure.
             *      The QoS parameter is updated in the P-GW. 
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          An IP-CAN Session Modification or,
             *          the PDN-GW may apply local QoS policy (change over PDN-GW OAM the QoS parameter for this UE)
             *      }
             *      then {
             *          Verify that the MME sends back a Create Bearer Response message to the S-GW
             *          and, verify that, in the case where dynamic PCC is deployed, the PCRF sends a PCC decision provision (QoS policy) message to the PDN GW
             *          or, verify that, in the case where dynamic PCC is not deployed, the PDN GW may apply local QoS policy
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_02
             * @reference   ETSI TS 129 274, clauses 7.2.3, 7.2.4
             * @reference   ETSI TS 123.401, clauses 5.4.1
             */
            
            /**
             * @desc    Validate that a Bearer Resource Command message shall be sent from a MME to a S-GW and forwarded to the PDN-GW as a part of the UE requested bearer resource allocation procedure or UE requested bearer resource modification procedure.
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_BEARER_RESOURCE_COMMAND
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE are available.
             *      MME is configured the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE attaches to the network.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The user starts an application on the UE and then changes to a different application (e.g. from Web browsing to FTP)
             *      }
             *      then {
             *          Verify that the IUT sends a Bearer Resource Command to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_03
             * @reference   ETSI TS 129 274, clauses 7.2.5
             * @reference   ETSI TS 123.401, clauses 5.4.5
             */
            
            /**
             * @desc    Validate that a Bearer Resource Command message shall be sent from a MME to a S-GW and forwarded to the PDN-GW as a part of the UE requested bearer resource allocation procedure or UE requested bearer resource modification procedure.
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_BEARER_RESOURCE_COMMAND
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      CORE, RAN, and one UE available.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      The resources or the memory in the PDN-GW shall be limited via the OAM interface in order to trigger the Bearer Resource Failure Indication.
             *      UE attaches to the network.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The user changes the application being used on the UE.  For example, the user changes the application being used on the UE from web browsing to FTP
             *      }
             *      then {
             *          Verify that the IUT sends a Bearer Resource Command to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_04
             * @reference   ETSI TS 129 274, clauses 7.2.6
             */
            
            /**
             * @desc    Check the exchange of Delete Session Request/Response after NAS Detach Request
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_SESSION_REQUEST
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE attaches to the network.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The UE is switched off
             *      }
             *      then {
             *          Verify that the IUT sends a Delete Session Request to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_05
             * @reference   ETSI TS 129 274, clauses 7.2.9.1 & 7.2.10.1
             * @reference   ETSI TS 123.401, clauses 5.3.8.2
             */
            
            /**
             * @desc    Check the exchange of Delete Bearer Request/Response as part of the PDN-GW initiated bearer deactivation procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_BEARER_RESPONSE
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available.
             *      OAM access to PDN-GW database is required to modify QoS parameters.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE attaches to the network and is in the ECM-CONNECTED state.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives the Delete Bearer Request from the S-GW
             *      }
             *      then {
             *          Verify that the IUT sends a Delete Bearer Response to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_06
             * @reference   ETSI TS 129 274, clauses 7.2.9.2 & 7.2.10.2
             * @reference   ETSI TS 123.401, clauses 5.4.4
             */
            
            /**
             * @desc    Verify that the Serving GW sends a Downlink Data Notification message to the MME for which it has control plane connectivity for a given UE
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DOWNLINK_DATA_NOTIFICATION_ACKNOWLEDGE
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE is required.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE attaches to the network and is in an ECM-IDLE (inactive) state.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives a Downlink Data Notification from the S-GW
             *      }
             *      then {
             *          Verify that the IUT sends a Downlink Data Notification Ack message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_07
             * @reference   ETSI TS 129 274, clauses 7.2.11.1 & 7.2.11.2
             * @reference   ETSI TS 123.401, clauses 5.3.4.3
             */
            
            /**
             * @desc    Verify that a Downlink Data Notification Failure indication is sent from an MME/SGSN to an S-GW 
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DOWNLINK_DATA_FAILURE_INDICATION
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE is required.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE attaches to the network and is in an ECM-IDLE (inactive) state.
             *      Do not respond to the Paging message
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives a a Downlink Data Notification
             *      }
             *      then {
             *          Verify that the IUT sends a Downlink Data Notification Failure indication message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_08
             * @reference   ETSI TS 129 274, clauses 7.2.11.1 & 7.2.11.2
             * @reference   ETSI TS 123.401, clauses 5.3.4.3
             */
            
            /**
             * @desc    Verify that, as a result of S1-based handover, the Delete Indirect Data Forwarding Tunnel Request message is sent on the S4/S11 interface by the SGSN/MME to the S-GW to delete the Indirect Forwarding Tunnels in the Source S-GW/Target S-GW 
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC and one UE available. For the RAN portion, two eNBs connected over two S1 interfaces where each eNB has one cell is required.
             *      An MME is configured with the GTP Tunnel Parameter.
             *      An S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach the UE to the network and verify it is in ECM-CONNECTED state
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The UE performs an S1 handover to the cell of the second eNB
             *      }
             *      then {
             *          Verify that the IUT sends a Delete Indirect Data Forwarding Tunnel Request message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_09
             * @reference   ETSI TS 129 274, clauses 7.2.12 & 7.2.13
             * @reference   ETSI TS 123.401, clauses 5.5.1.2.2
             */
            
            /**
             * @desc    Verify that the Modify Bearer Command procedure is triggering the Bearer Modificaiton Procedure with Bearer QoS Update
             *          This procedure is part of the HSS Initiated Subscribed QoS Modification procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_MODIFY_BEARER_COMMAND
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Turn on the UE.  Verify the UE is in ECM-IDLE mode.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger the procedure by generating an Insert Subscriber Data (IMSI, Subscription Data) message at the HSS.  This message will terminate at the MME.  This message can be triggered via the HSS OAM interface, where the user can change the ARP or QCI value associated with the UE.  The Insert Subscriber Data message includes EPS subscribed QoS (both QCI and ARP) and the subscribed UE–AMBR and APN AMBR.
             *          Attach the UE to the network.
             *          Verify the UE is in ECM-CONNECTED mode
             *      }
             *      then {
             *          Verify that the IUT sends a Modify Bearer Command message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_10
             * @reference   ETSI TS 129 274, clauses 7.2.14
             * @reference   ETSI TS 123.401, clauses 5.4.2.2.1
             */
            
            /**
             * @desc    Verify that the Modify Bearer Failure Indication shall be sent on the S11 interface by the S-GW to the MME as part of the failure of HSS Initiated Subscribed QoS Modificaiton procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_MODIFY_BEARER_COMMAND
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Turn on the UE.  Verify the UE is in ECM-IDLE mode.
             *      Via the OAM interface of the P-GW modify the avialiable resources or memory in the P-GW so they are not available
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger the procedure by generating an Insert Subscriber Data (IMSI, Subscription Data) message at the HSS.
             *      }
             *      then {
             *          Verify that the IUT sends a Modify Bearer Command message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_11
             * @reference   ETSI TS 129 274, clauses 7.2.14
             * @reference   ETSI TS 123.401, clauses 5.4.2.2.1
             */
            
            /**
             * @desc    Verify for GTP based on S5/S8 (not PMIP), the Update Bearer Request is sent by the P-GW to the S-GW and then forwarded to the MME 
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_UPDATE_BEARER_RESPONSE
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Turn on the UE.  Verify it is in ECM-IDLE mode.
             *      Verify the results described in the “Expect Results” section of this test.
             *      Attach the UE to the network.  Verify it is in ECM-CONNECTED mode
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives an Update Bearer Request message from the S-GW.
             *      }
             *      then {
             *          Verify that the IUT sends a Update Bearer Response message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_12
             * @reference   ETSI TS 129 274, clauses 7.2.15 & 7.2.16
             * @reference   ETSI TS 123.401, clauses 5.4.2.1 & 5.4.3
             */
            
            /**
             * @desc    Verify that a Delete Bearer Command message is sent on the S11 interface by the MME to the S-GW as a part of the eNB requested bearer release or MME-Initated Dedicated Bearer Deactivation procedure 
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_BEARER_COMMAND
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach a UE to the network
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives an indication of bearer release from eNodeB
             *      }
             *      then {
             *          Verify that the IUT sends a Delete Bearer Command message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_13
             * @reference   ETSI TS 129 274, clauses 7.2.17.1
             * @reference   ETSI TS 123.401, clauses 5.4.4.2
             */
            
            /**
             * @desc    Verify that a Delete Bearer Failure Indicaiton is sent on the S11 interface by the S-GW to the MME as part of the failure of an eNB requested bearer release or MME Inititated Dedicated Bearer Deactivation procedure 
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_BEARER_COMMAND
             * Config Id: CF03
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach a UE to the network
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives an indication of bearer release from eNodeB indicating an invalid bearer context
             *      }
             *      then {
             *          Verify that the IUT sends a Delete Bearer Command message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_14
             * @reference   ETSI TS 129 274, clauses 7.2.17.2 & 7.2.17.2
             * @reference   ETSI TS 123.401, clauses 5.4.4.2
             */
            
            /**
             * @desc    Verify that the Create Indirect Data Forwarding Tunnel Request message is sent on the S11 interface by the MME to the S-GW as part of a handover procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST
             * Config Id: CF03
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach a UE to the network
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The handover procedure is running
             *      }
             *      then {
             *          Verify that the IUT sends a Create Indirect Data Forwarding Tunnel Request message to the S-GW
             *          and, verify that the UE's S-GW context are not affected 
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_15
             * @reference   ETSI TS 129 274, clauses 7.2.21 & 7.2.22
             * @reference   ETSI TS 123.401, clauses 5.3.5
             */
            
            /**
             * @desc    Verify that all logical S1-AP signalling (S1 – MME) and all S1 bearers over S1-U are released for a given data session.  Verify that the UE changes from ECM-CONNECTED state to ECM-IDLE state.  Also verify that all UE related context information is deleted in the eNB
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_RELEASE_ACCESS_BEARERS_REQUEST
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach a UE to the network
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives an S1 UE Context Release Request message from eNodeB
             *      }
             *      then {
             *          Verify that the IUT sends a Release Access Bearers Request message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_16
             * @reference   ETSI TS 129 274, clauses 7.2.21 & 7.2.22
             * @reference   ETSI TS 123.401, clauses 5.3.5
             */
            
            /**
             * @desc    Verify that a Stop Paging Indication message is sent on the S11/S4 interface by the S-GW to the MME/SGSN as part of the network triggered service request procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      UE is in ECM-IDLE state (no data is being exchanged) on E-UTRA network.
             *      UE should be attached to a UTRA network
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receives a Stop Paging Request message from S-GW
             *      }
             *      then {
             *          Verify that the IUT stops sending Paging
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TM_17
             * @reference   ETSI TS 129 274, clauses 7.2.23
             * @reference   ETSI TS 123.401, clauses 5.3.4.3
             */
            
        } // End of group tunnelManagement 
        
        group csFallbackAndSrvcc { 
            
            /**
             * @desc    Verify that the Suspend Notification message is sent on the S11 interface by the MME to the S-GW as part of the 1xRTT CS fallback procedures
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_SUSPEND_NOTIFICATION
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      CDMA 2000 1xRTT network as a neighbor RAT or a simulation of 1xRTT base station.
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes
             *      Attach UE to the network
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger a successful SRVCC Handover to CDMA2000 1xRTT 
             *      }
             *      then {
             *          The IUT sends the Suspend Notification to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_CSF_SRVCC_01 TP_CSF_SRVCC_01
             * @reference   ETSI TS 129 274, clauses 7.4.1 & 7.4.2
             * @reference   ETSI TS 123 216, clauses 6.1.3
             */
            
            /**
             * @desc    Verify that the Resume Notification message is sent on the S11 interface by the MME to the S-GW as part of the resume procedure upon returning from CS fallback to E-UTRA.
             *          Verify after receiving a Resume Notification message from the MME, the S-GW forwards packets it receives from the P-GW for the UE
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_RESUME_NOTIFICATION
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      CDMA 2000 1xRTT network as a neighbor RAT or a simulation of 1xRTT base station.
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Setup a call on E-UTRA system
             *      Force the UE to perform CSFB to CDMA2000 1xRTT network (or emulator)
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger a successful SRVCC Handover to CDMA2000 1xRTT 
             *      }
             *      then {
             *          The IUT sends the Resume Notification to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_CSF_SRVCC_01 TP_CSF_SRVCC_02
             * @reference   ETSI TS 129 274, clauses 7.4.3 & 7.4.4
             */
            
        } // End of group csFallbackAndSrvcc
        
        group non3gppAccess { 
            
            /**
             * @desc    Verify that a Create Forwarding Tunnel Request message is sent by the MME to a Serving GW as a part of the MME configuration of resources for indirect data forwarding during active handover procedure from E-UTRA to CDMA2000 HPRD access
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_CREATE_FORWARDING_TUNNEL_REQUEST
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      CDMA 2000 HRPD network as a neighbor RAT or a simulation of HRPD base station.
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Verify handover parameters are properly configured
             *      Attach UE to the E-UTRA network
             *      Start a data session (e.g. FTP)
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger a Suspend Notification from the eNodB 
             *      }
             *      then {
             *          Verify that the IUT sends the Suspend Notification to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_N3GPP_AR_01
             * @reference   ETSI TS 129 274, clauses 7.5.1 & 7.5.2
             * @reference   ETSI TS 123 402, clauses 9.3.2
             */
            
        } // End of group non3gppAccess
        
        group restorationAndRecovery { 
            
            /**
             * @desc    Procedures during MME/S-GW partial failure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_PDN_CONNECTION_SET_REQUEST
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach the UE to the network.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger a Delete PDN Connection Set Request from the eNodeB 
             *      }
             *      then {
             *          Verify that the IUT sends the Delete PDN Connection Set Request to the MME
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_RR_01
             * @reference   ETSI TS 129 274, clauses 7.9.1 & 7.9.2
             * @reference   ETSI TS 123 007, clauses 14.3 & 16.2
             */
            
            /**
             * @desc    Procedures during a Peer’s Partial Failure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_DELETE_PDN_CONNECTION_SET_REQUEST
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach the UE to the network.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          The IUT receive a Delete PDN Connection Set Request  from the MME 
             *      }
             *      then {
             *          Verify that the IUT sends the Delete PDN Connection Set Request to the MME
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_RR_01
             * @reference   ETSI TS 129 274, clauses 7.9.1 & 7.9.2
             * @reference   ETSI TS 123 007, clauses 14.3 & 16.2
             */
            
        } // End of group restorationAndRecovery
        
        group traceManagement { 
            
            /**
             * @desc    Verify that the Trace Session Activation message is sent on the S11/S4 by the MME/SGSN to the S-GW, and on S5/S8 by the S-GW to the P-GW when session trace is activated for a particular IMSI or IMEI for a UE that is attached and active or attached and idle
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_TRACE_SESSION_ACTIVATION and PICS_SUPPORT_MME_EMULATION
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach the UE to the network.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Via the MME OAM interface start the trace session activation procedure
             *      }
             *      then {
             *          Verify that the IUT sends a Trace Session Activation message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TMM_01
             * @reference   ETSI TS 129 274, clauses 7.12.1
             */
            
            /**
             * @desc    Verify that the Trace Session Deactivation message is sent on the S11/S4 by the MME/SGSN to the S-GW, and on S5/S8 by the S-GW to the P-GW when session trace is deactivated for a particular IMSI or IMEI for a UE that is attached and active or attached and idle
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_MME and PICS_MME_TRACE_SESSION_DEACTIVATION and PICS_SUPPORT_MME_EMULATION
             * Config Id: CF02
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE available. 
             *      Configured the MME with the GTP Tunnel Parameter.
             *      Configure the S-GW with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Attach the UE to the network.
             *      If not already started, via the MME OAM interface start the trace session activation procedure.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Via the MME OAM interface start the trace session activation procedure
             *      }
             *      then {
             *          Verify that the IUT sends a Trace Session Activation message to the S-GW
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_TMM_02
             * @reference   ETSI TS 129 274, clauses 7.12.1
             */
            
        } // End of group traceManagement
        
    } // End of group mmeRole 
    
    /**
     * @desc This group contains all test case for IUT acting as a S-GW
     */
    group sgwRole {
    
        /**
         * @desc This group contains all test case for IUT acting as a MME
         * @see ETSI TS 103 202-2 V0.0.2 (2014-03), clause 5.2.1
         */
        group pathManagement {
            
            /**
             * @desc    Verify the successful answering of Echo Request with Echo Response
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_SGW and PICS_ECHO_REQUEST and PICS_ECHO_REPLY
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC and RAN network available
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Power on the MME and S-GW
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger MME to initiate the Echo Request Procedure
             *      }
             *      then {
             *          GTP Echo Request is sent which contains the Recovery Information Element (IE)
             *          and, the Recovery IE is either incorrect or has the wrong format.
             *          and, the Echo Response contains the Restart counter and a negative Cause value
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_PM_01
             * @reference   ETSI TS 129 274, clauses 7.1.1 & 7.1.2
             */
            
            /**
             * @desc    Verify the successful answering of Echo Request with Echo Response with a negative cause value
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_SGW and PICS_ECHO_REQUEST and PICS_ECHO_REPLY
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC and RAN network available
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Power on the MME and S-GW
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          Trigger MME (or simulator) initiates the Echo Request Procedure with an error
             *      }
             *      then {
             *          GTP Echo Request is sent which contains the Recovery Information Element (IE)
             *          and, the Recovery IE is either incorrect or has the wrong format
             *          and, the Echo Response contains the Restart counter and a negative Cause value
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_PM_02
             * @reference   ETSI TS 129 274, clauses 7.1.1 & 7.1.2
             */
            
            /**
             * @desc    Verify the GTP version that the sending entity supports.  If a GTP network element receives a message of unsupported GTP version, verify that the network element returns a Version Not Supported Indication message and that it discards the received message
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_SGW and PICS_VERSION_NOT_SUPPORTED
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC and RAN network available
             *      Network should be configured as show in Figure 3 above.
             *      MME is configured with the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *      Power on the MME and S-GW
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          MME (or simulator) initiates the Version Not supported Procedure by sending a GTP message which contains a version higher than the latest version
             *      }
             *      then {
             *          Verify that any given GTP message (e.g. Echo Request) contains a version that is higher than the latest supported version.
             *          and, verify that the Version not Supported Indication contains the GTP version the network element  currently supports
             *      }
             *  }
             * </pre>
             * @verdict pass on success, inconc on timeout, fail otherwise
             *
             * @see         ETSI TS 103 202-2 V0.0.2 (2014-03), TP_PM_03
             * @reference   ETSI TS 129 274, clauses 7.1.3
             */
            
        } // End of group pathManagement 
        
        /**
         * @desc This group contains all test case for IUT acting as a SGW
         * @see ETSI TS 103 202-2 V0.0.2 (2014-03), clause 5.2.2
         */
        group tunnelManagement {
            
            /**
             * @desc    Validate the Create Session Request/Response and the Modify Bearer Request/Response Procedure between MME and S-GW as part of the ATTACH Procedure
             * <pre>
             * Pics Selection: PICS_S11_IUT_IS_SGW and PICS_SGW_CREATE_SESSION_RESPONSE and PICS_SGW_CREATE_BEARER_REQUEST and PICS_SGW_MODIFY_BEARER_RESPONSE
             * Config Id: CF01
             * Initial conditions:
             *  with {
             *      EPC, RAN, and one UE are available.
             *      MME is configured the GTP Tunnel Parameter.
             *      S-GW is configured with the GTP Tunnel Parameter.
             *      Verify IP connectivity between the two nodes.
             *  }
             * Expected behaviour:
             *  ensure that {
             *      when {
             *          UE registers with and attaches to the network to receive services that require registration
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