Title:  Inconsistent handling of Version number in negative D-START 
confirmation
     
PDR Reference:                          97100041
     
Originator Reference:                   UL-DR 124
     
SARPs Document Reference:               ULCS SARPs, 4.3.3.4.2.2.2
     
Status:                                         PROPOSED (28/11/97) -> 
RESOLVED (16/12/97)
     
PDR Revision Date:                      16/12/97
     
PDR Submission Date:                    29/10/97
     
Submitting State/Organisation:          Eurocontrol
     
Submitting Author Name:                 KERR, A
     
Submitting Author E-mail Address:       tony.kerr@level-7.co.uk
     
Submitting Author Supplemental          Tel +44 1344 867199 
Contact Information:                    Fax: +44 1344 868442
     
SARPs Date:                             Proposed ICAO Version 2.0
                                        (WG3 Thailand, Mar 97)
SARPs Language:                 English
     
Summary of Defect:
     
The handling of DS-User Version number in D-START confirmation primitives is 
incorrectly described in the case when association establishment is 
rejected.  It is also inconsistent with the correct description which is 
given for successful association establishment in 4.3.3.4.2.2.1.
     
     
Assigned SME:                           Sub-Volume 4 SME
     
SME Comment:
     
     
Proposed SARPs amendment:
     
Modification to 4.3.3.4.2.2.2:
Original text:
a)  Extract the DS-User Version Number, if present, from the final component 
of the Application Context Name parameter.
     
Replacement text (same as 4.3.3.4.2.2.1.a):
a)  If the final component of the Application Context Name parameter is 
non-zero, then use it as the DS-User Version Number in the D-START 
Confirmation primitive.  If it has the value zero, then omit the DS-User 
Version Number parameter in the D-START Confirmation primitive.
     
SME Recommendation to CCB:              Progress to RESOLVED status
     
CCB Decision:                           RESOLVED (Email ballot 28/11/97 - 
14/12/97)