Download TR A3825.02 Elcom 90. User element conventions

THE DATA TRANSFER
FUNCTION GROUP
Requested Data Transfer FU
7-7
Phase 2: Data transmission. 7
INITIATOR UE
A-Data (init., T) ind.
A-Data (init., T) ind.
EASE
RESPONDER UE
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A-Data (init., T) req.
A-Data (init., T) req.
•
•
A-Data (init., T) ind.
A-Data (init., F) ind.
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A-Data (init., T) req.
A-Data (init., F) req.
In this phase, the following rules apply:
1. This document places no restriction on the number of consecutive A-Data (init., T) req. primitives
that may be issued before the terminating A-Data (init., F) req. is issued. However, if too much
time elapses between any A-Data (init., T) primitive and the succeeding A-Data (init., T) or A-Data
(init., F) primitive, an error situation occurs in the EASE. See chapter 7.1.3.2 "Error handling",
below.
2. The RESPONDER UE is responsible for determining the timing of the individual A-Data (init.) req.
primitives. However, the primitives shall be issued in without undue delay.
3. The RESPONDER UE shall report the number of data incarnations specified by the parameter
Periods from the request (A-Init-Transfer transaction). Each incarnation shall contain the data
values that were (will be) valid in the RESPONDER system at the points in time defined by
the parameters T0, Dt, T-Unit and Periods from the request.
4. If at least one of the requested incarnations does exist in the RESPONDER system, the
RESPONDER UE shall return the requested number of incarnations, setting the quality code =
not-ok for all data values in all incarnations that do not exist. The case of no existing incarnation is
considered an error; see below.
5. The case of parameters Dt and T-Unit in the request specifying a time interval unequal than the
archiving time interval in the RESPONDER system, is considered an error; see below.
6. The rules stated in chapter 7.1.1 "Function", above, also apply here.
7Notation: T and F signifies, for the parameter More-D, the values true and false, respectively.
Elcom-90 User Element Conventions, TR A3825.03
December 2009