Title: CPDLC - Incomplete requirement

PDR Reference:                                        	98050011
Originator Reference:                             	ATNSI_CPC01 
SARPs Document Reference:                  	CPDLC SARPs, Section 2.3.5.4.4.2
Status:                                            		REJECTED 
PDR Revision Date:                                 	10/06/98 (SUBMITTED -> REJECTED)
PDR Submission Date:                                	12/05/98 
Submitting State/Organization:                  	AIRSYS ATM (ACI/ATNSI)
Submitting Author Name:                           	Ilkiewicz, M  /  Stokes S.
Submitting Author E-mail Address:          	michel.ilkiewicz@cdv.vly.sextant.thomson.fr 
					Shawn.Stokes@ATNSI.COM 
Submitting Author Supplemental 
Contact Information:                       
SARPs Date:                                        	IV1.1 
SARPs Language:                            	English

Summary of Defect:

The timers are stopped only if the D-START Result parameter is set to the abstract value "accepted".

This is erroneous, because the timers should be stopped independent of the value of the D-START Result parameter, otherwise they would continue to run.

Assigned SME:                              Sub-Volume II SME

Proposed SARPs amendment: 

The requirement should be made similar to requirement 2.3.5.6.4.2.

SME Recommendation to CCB:                 

PDR 97100026 (CPDLC - Exception Handling Correction) takes care of the inconsistency between sections 2.3.5.4.4.2 and 2.3.5.6.4.2. These two sections are aligned in SARPs Edition 2.2.

In version 2.2, the timer t-start is stopped in all cases (independently of the value of the D-START parameter). as shown below:

                                        Result                     User Data    Reject Source         DSC                state
section 2.3.5.3.3.1      "accepted"                    absent                 n/a                 "false"       "START-REQ"  
section 2.3.5.3.3.3      "accepted"                    absent                 n/a                  "true"       "START-REQ"
section 2.3.5.4.4.2       "accepted"                   present                n/a
can not occur               "accepted"                                                                                      not  "START REQ"       
section 2.3.5.3.3.2    "rejected(permanent)"    present          "DS user"           "false"       "START-REQ"
section 2.3.5.3.3.4    "rejected(permanent)"    present           "DS user"            "true"       "START-REQ"
section 2.3.5.4.3.2     "rejected(permanent)"   absent/notvalid
section 2.3.5.4.5.1      "rejected(transient)"
section 2.3.4.4.5.1                                                                  "DS provider"

There is therefore no need to modify the SARPs.

CCB Decision:      			atnp_ccb_chair: SUBMITTED (12/05/98)
					atnp_ccb_chair: REJECTED (10/06/98)