202 Mapping Basic Types
Created: 13 Sep 2005
Status: Not Applicable
Part: Part 8-1 (2004)
Issue: 7-3 defines basic types (INT8, INT8U, INT16, STRING32, etc...)
Is that the intention that every type that is followed by an indication of its size is to be encoded with a fixed size in BER,
i.e. INT8 always as one octet, INT16 always as two octets, STRING32 always as 32 octets (how about Unicode ?) ?
Proposal: Specify the mapping between the -7-3 types, the -6 MMS types, the Data types and the ASN.1 encoding.
(see enclosed sheet)
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Re-entry of non-public comment:
There is no need to add anything NORMATIVE to 8-1. ISO 9506 explicitly defines this in the Data production.
This sets a bad precident since it is well defined in 9506.
Additionally, BER does not encode INT16 into always 2 octets. (it can be three if it is a negative number of a positive value greater than 32,766).
The mappings are already in 8-1 as far as possible. There is no apparent issue.
|19 Sep 05
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