484 lines
13 KiB
Plaintext
484 lines
13 KiB
Plaintext
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/*
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* FSM pseudo code used in the design/implementation of the CC PTMP agent.
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*/
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FSM CC_PTMP_Agent
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{
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State CC_STATE_IDLE {
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Stimulus CC_EVENT_AVAILABLE {
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Next_State CC_STATE_PENDING_AVAILABLE;
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}
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Stimulus CC_EVENT_CANCEL {
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Action Set_Selfdestruct;
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}
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}
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State CC_STATE_PENDING_AVAILABLE {
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Stimulus CC_EVENT_MSG_ALERTING {
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Action Send_CC_Available(Q931_ALERTING);
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Next_State CC_STATE_AVAILABLE;
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}
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Stimulus CC_EVENT_MSG_DISCONNECT {
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Action Send_CC_Available(Q931_DISCONNECT);
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Next_State CC_STATE_AVAILABLE;
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}
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Stimulus CC_EVENT_CANCEL {
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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State CC_STATE_AVAILABLE {
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Stimulus CC_EVENT_MSG_RELEASE {
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Action Stop_T_RETENTION;
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Action Start_T_RETENTION;
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}
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Stimulus CC_EVENT_MSG_RELEASE_COMPLETE {
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Action Stop_T_RETENTION;
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Action Start_T_RETENTION;
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}
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Stimulus CC_EVENT_CC_REQUEST {
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Action Pass_Up_CC_Request;
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Action Stop_T_RETENTION;
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Next_State CC_STATE_REQUESTED;
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}
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Stimulus CC_EVENT_TIMEOUT_T_RETENTION {
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Action Send_EraseCallLinkageID;
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Action Relese_LinkID;
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Action Pass_Up_CC_Cancel;
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Action Stop_T_RETENTION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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Stimulus CC_EVENT_CANCEL {
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Action Send_EraseCallLinkageID;
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Action Relese_LinkID;
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Action Stop_T_RETENTION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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State CC_STATE_REQUESTED {
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Stimulus CC_EVENT_CC_REQUEST_ACCEPT {
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Action Send_EraseCallLinkageID;
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Action Relese_LinkID;
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/* Start T_CCBS2 or T_CCNR2 depending upon CC mode. */
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Action Start_T_SUPERVISION;
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Action Reset_A_Status;
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Action Raw_Status_Count_Reset;
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Next_State CC_STATE_ACTIVATED;
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}
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Stimulus CC_EVENT_CANCEL {
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Action Send_EraseCallLinkageID;
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Action Relese_LinkID;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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/*
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* Pass_Up_A_Status passes up the current final status of A.
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* Does nothing if status is invalid.
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*
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* Pass_Up_A_Status_Indirect is the same as Pass_Up_A_Status but
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* sets a timer to expire immediately to pass up the event.
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* Does nothing if status is invalid.
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*
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* Pass_Up_Status_Rsp_A passes up the current accumulated status of A.
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* Does nothing if status is invalid.
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*
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* Pass_Up_Status_Rsp_A_Indirect is the same as Pass_Up_Status_Rsp_A but
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* sets a timer to expire immediately to pass up the event.
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* Does nothing if status is invalid.
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*/
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State CC_STATE_ACTIVATED {
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Stimulus CC_EVENT_RECALL {
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Action Send_Error_Recall(ROSE_ERROR_CCBS_NotReadyForCall);
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Action Set_Call_To_Hangup;
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}
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Stimulus CC_EVENT_B_FREE {
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Action Send_CCBSBFree;
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}
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Stimulus CC_EVENT_REMOTE_USER_FREE {
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Test = Get_A_Status;
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Test == Invalid {
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Test = Get_T_CCBS1_Status;
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Test != Active {
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Action Reset_Raw_A_Status;
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Action Send_CCBSStatusRequest;
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Action Start_T_CCBS1;
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}
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Next_State CC_STATE_B_AVAILABLE;
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}
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Test == Busy {
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Action Pass_Up_A_Status_Indirect;
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Action Send_CCBSBFree;
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Test = Get_T_CCBS1_Status;
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Test != Active {
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Action Reset_Raw_A_Status;
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Action Send_CCBSStatusRequest;
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Action Start_T_CCBS1;
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}
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Next_State CC_STATE_SUSPENDED;
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}
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Test == Free {
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//Action Pass_Up_A_Status_Indirect;
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Action Send_RemoteUserFree;
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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/* Start T_CCBS3 */
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Action Start_T_RECALL;
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Next_State CC_STATE_WAIT_CALLBACK;
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}
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}
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Stimulus CC_EVENT_A_STATUS {
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Test = Get_T_CCBS1_Status;
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Test == Active {
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Action Pass_Up_Status_Rsp_A_Indirect;
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Next_State $;
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}
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Test != Active {
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Action Reset_A_Status;
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Action Reset_Raw_A_Status;
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Action Send_CCBSStatusRequest;
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Action Start_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Start_Extended_T_CCBS1;
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Next_State $;
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}
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}
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Stimulus CC_EVENT_A_FREE {
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Action Raw_Status_Count_Reset;
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Action Set_Raw_A_Status_Free;
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Action Promote_Raw_A_Status;
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Action Pass_Up_Status_Rsp_A;
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Action Stop_T_CCBS1;
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}
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Stimulus CC_EVENT_A_BUSY {
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Action Add_Raw_A_Status_Busy;
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Action Pass_Up_Status_Rsp_A;
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}
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Stimulus CC_EVENT_TIMEOUT_T_CCBS1 {
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Action Promote_Raw_A_Status;
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Test = Get_A_Status;
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Test != Invalid {
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/* Only received User A busy. */
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Action Raw_Status_Count_Reset;
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}
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Test == Invalid {
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/* Did not get any responses. */
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Action Raw_Status_Count_Increment;
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Test = Get_Raw_Status_Count;
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Test >= RAW_STATUS_COUNT_MAX {
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/* User A no longer present. */
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Action Send_CCBSErase(Normal_Unspecified);
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Action Pass_Up_CC_Cancel;
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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}
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Stimulus CC_EVENT_TIMEOUT_EXTENDED_T_CCBS1 {
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Action Reset_A_Status;
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Action Raw_Status_Count_Reset;
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}
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Stimulus CC_EVENT_TIMEOUT_T_SUPERVISION {
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Action Pass_Up_CC_Cancel;
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Action Send_CCBSErase(T_CCBS2_TIMEOUT);
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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Stimulus CC_EVENT_LINK_CANCEL {
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Action Pass_Up_CC_Cancel;
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Action Send_CCBSErase(Normal_Unspecified);
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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Stimulus CC_EVENT_CANCEL {
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Action Send_CCBSErase(Normal_Unspecified);
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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State CC_STATE_B_AVAILABLE {
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/* A status is always invalid on entry. */
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Stimulus CC_EVENT_RECALL {
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Action Send_Error_Recall(ROSE_ERROR_CCBS_NotReadyForCall);
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Action Set_Call_To_Hangup;
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}
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Stimulus CC_EVENT_A_STATUS {
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Action Stop_Extended_T_CCBS1;
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Action Start_Extended_T_CCBS1;
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Action Pass_Up_Status_Rsp_A_Indirect;
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}
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Stimulus CC_EVENT_A_FREE {
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Action Send_RemoteUserFree;
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Action Set_Raw_A_Status_Free;
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//Action Promote_Raw_A_Status;
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//Action Pass_Up_A_Status;
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Test = Get_Extended_T_CCBS1_Status;
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Test == Active {
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Action Pass_Up_Status_Rsp_A;
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}
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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/* Start T_CCBS3 */
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Action Start_T_RECALL;
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Next_State CC_STATE_WAIT_CALLBACK;
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}
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Stimulus CC_EVENT_A_BUSY {
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Action Add_Raw_A_Status_Busy;
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Test = Get_Extended_T_CCBS1_Status;
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Test == Active {
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Action Pass_Up_Status_Rsp_A;
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}
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}
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Stimulus CC_EVENT_TIMEOUT_T_CCBS1 {
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Test = Get_Raw_A_Status;
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Test != Invalid {
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/* Only received User A is busy. */
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Action Raw_Status_Count_Reset;
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Action Send_CCBSBFree;
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Action Promote_Raw_A_Status;
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Action Pass_Up_A_Status;
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/* Optimization due to flattening */
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//Test = Get_T_CCBS1_Status;
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//Test != Active
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{
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Action Reset_Raw_A_Status;
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Action Send_CCBSStatusRequest;
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Action Start_T_CCBS1;
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}
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Next_State CC_STATE_SUSPENDED;
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}
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Test == Invalid {
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/* Did not get any responses. */
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Action Raw_Status_Count_Increment;
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Test = Get_Raw_Status_Count;
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Test >= RAW_STATUS_COUNT_MAX {
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/* User A no longer present. */
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Action Send_CCBSErase(Normal_Unspecified);
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Action Pass_Up_CC_Cancel;
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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//Action Reset_Raw_A_Status;
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Action Send_CCBSStatusRequest;
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Action Start_T_CCBS1;
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}
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}
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Stimulus CC_EVENT_TIMEOUT_T_SUPERVISION {
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Action Pass_Up_CC_Cancel;
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Action Send_CCBSErase(T_CCBS2_TIMEOUT);
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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Stimulus CC_EVENT_LINK_CANCEL {
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Action Pass_Up_CC_Cancel;
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Action Send_CCBSErase(Normal_Unspecified);
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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Stimulus CC_EVENT_CANCEL {
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Action Send_CCBSErase(Normal_Unspecified);
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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State CC_STATE_SUSPENDED {
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Stimulus CC_EVENT_RECALL {
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Action Send_Error_Recall(ROSE_ERROR_CCBS_NotReadyForCall);
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Action Set_Call_To_Hangup;
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}
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Stimulus CC_EVENT_A_STATUS {
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Action Stop_Extended_T_CCBS1;
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Action Start_Extended_T_CCBS1;
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Action Pass_Up_Status_Rsp_A_Indirect;
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}
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Stimulus CC_EVENT_A_FREE {
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Action Set_Raw_A_Status_Free;
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Action Promote_Raw_A_Status;
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Action Pass_Up_A_Status;
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Test = Get_Extended_T_CCBS1_Status;
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Test == Active {
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Action Pass_Up_Status_Rsp_A;
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}
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Reset_A_Status;
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Action Raw_Status_Count_Reset;
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Next_State CC_STATE_ACTIVATED;
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}
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Stimulus CC_EVENT_A_BUSY {
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Action Add_Raw_A_Status_Busy;
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Test = Get_Extended_T_CCBS1_Status;
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Test == Active {
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Action Pass_Up_Status_Rsp_A;
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}
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}
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Stimulus CC_EVENT_TIMEOUT_T_CCBS1 {
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Test = Get_Raw_A_Status;
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Test != Invalid {
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/* Only received User A is busy. */
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Action Raw_Status_Count_Reset;
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}
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Test == Invalid {
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/* Did not get any responses. */
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Action Raw_Status_Count_Increment;
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Test = Get_Raw_Status_Count;
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Test >= RAW_STATUS_COUNT_MAX {
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/* User A no longer present. */
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Action Send_CCBSErase(Normal_Unspecified);
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Action Pass_Up_CC_Cancel;
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Action Stop_T_CCBS1;
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Action Stop_Extended_T_CCBS1;
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Action Stop_T_SUPERVISION;
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Action Set_Selfdestruct;
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Next_State CC_STATE_IDLE;
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}
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}
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Action Reset_Raw_A_Status;
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Action Send_CCBSStatusRequest;
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Action Start_T_CCBS1;
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}
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Stimulus CC_EVENT_TIMEOUT_T_SUPERVISION {
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Action Pass_Up_CC_Cancel;
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|
Action Send_CCBSErase(T_CCBS2_TIMEOUT);
|
||
|
|
Action Stop_T_CCBS1;
|
||
|
|
Action Stop_Extended_T_CCBS1;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_LINK_CANCEL {
|
||
|
|
Action Pass_Up_CC_Cancel;
|
||
|
|
Action Send_CCBSErase(Normal_Unspecified);
|
||
|
|
Action Stop_T_CCBS1;
|
||
|
|
Action Stop_Extended_T_CCBS1;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_CANCEL {
|
||
|
|
Action Send_CCBSErase(Normal_Unspecified);
|
||
|
|
Action Stop_T_CCBS1;
|
||
|
|
Action Stop_Extended_T_CCBS1;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
State CC_STATE_WAIT_CALLBACK {
|
||
|
|
Stimulus CC_EVENT_TIMEOUT_T_RECALL {
|
||
|
|
Action Pass_Up_CC_Cancel;
|
||
|
|
Action Send_CCBSErase(T_CCBS3_TIMEOUT);
|
||
|
|
Action Stop_T_RECALL;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_STOP_ALERTING {
|
||
|
|
/*
|
||
|
|
* If an earlier link can send us this event then we
|
||
|
|
* really should be configured for globalRecall like
|
||
|
|
* the earlier link.
|
||
|
|
*/
|
||
|
|
Test = Get_Recall_Mode;
|
||
|
|
Test == globalRecall {
|
||
|
|
Action Send_CCBSStopAlerting;
|
||
|
|
}
|
||
|
|
Action Stop_T_RECALL;
|
||
|
|
Action Reset_A_Status;
|
||
|
|
Action Raw_Status_Count_Reset;
|
||
|
|
Next_State CC_STATE_ACTIVATED;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_RECALL {
|
||
|
|
Action Pass_Up_CC_Call;
|
||
|
|
Action Set_Original_Call_Parameters;
|
||
|
|
Test = Get_Recall_Mode;
|
||
|
|
Test == globalRecall {
|
||
|
|
Action Send_CCBSStopAlerting;
|
||
|
|
}
|
||
|
|
Action Stop_T_RECALL;
|
||
|
|
Next_State CC_STATE_CALLBACK;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_A_STATUS {
|
||
|
|
Action Set_Raw_A_Status_Free;
|
||
|
|
Action Pass_Up_Status_Rsp_A_Indirect;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_TIMEOUT_T_SUPERVISION {
|
||
|
|
Action Pass_Up_CC_Cancel;
|
||
|
|
Action Send_CCBSErase(T_CCBS2_TIMEOUT);
|
||
|
|
Action Stop_T_RECALL;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_LINK_CANCEL {
|
||
|
|
Action Pass_Up_CC_Cancel;
|
||
|
|
Action Send_CCBSErase(Normal_Unspecified);
|
||
|
|
Action Stop_T_RECALL;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_CANCEL {
|
||
|
|
Action Send_CCBSErase(Normal_Unspecified);
|
||
|
|
Action Stop_T_RECALL;
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
State CC_STATE_CALLBACK {
|
||
|
|
Stimulus CC_EVENT_RECALL {
|
||
|
|
Action Send_Error_Recall(ROSE_ERROR_CCBS_AlreadyAccepted);
|
||
|
|
Action Set_Call_To_Hangup;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_A_STATUS {
|
||
|
|
Action Set_Raw_A_Status_Free;
|
||
|
|
Action Pass_Up_Status_Rsp_A_Indirect;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_TIMEOUT_T_SUPERVISION {
|
||
|
|
Action Pass_Up_CC_Cancel;
|
||
|
|
Action Send_CCBSErase(T_CCBS2_TIMEOUT);
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_LINK_CANCEL {
|
||
|
|
Action Pass_Up_CC_Cancel;
|
||
|
|
Action Send_CCBSErase(Normal_Unspecified);
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
Stimulus CC_EVENT_CANCEL {
|
||
|
|
Action Send_CCBSErase(Normal_Unspecified);
|
||
|
|
Action Stop_T_SUPERVISION;
|
||
|
|
Action Set_Selfdestruct;
|
||
|
|
Next_State CC_STATE_IDLE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|