User`s guide

Contents clvii
The Product Defined Query Reply
This query reply is used by IBM products using registered subidentifiers within the X ' 9C ' data
structure. The Product Defined Data Stream query reply indicates support of a 3270DS workstation
auxiliary device which uses an IBM product defined data stream. The data stream is not defined by a
format architecture document having an identifiable control point such as an architecture review board.
When an auxiliary device supports an IBM product defined data stream, this query reply is transmitted
inbound in reply to a Query List (QCODE List = 0x9C or All).
Optional Parameters: All parameters shown in the base part of the query reply and the Direct Access
self-defining parameter must be present.
The format of the Product Defined query reply is as follows:
Table D-13. IBM Product Defined Query Reply Base Format
Offset Length Content Meaning
0 1 word Length Length of structure (includes SDPs)
2 1 byte 0x81 Query Reply ID
3 1 byte 0x9C IBM Product Defined Data Stream
4-5 2 bytes FLAGS Reserved
6 1 byte REFID Reference Identifier
7 1 byte SSID Subset Identifier
8 1 byte 0x04 Parameter Length
9 1 byte 0x01 Direct Access
10-11 1 word DOID Destination/Origin ID assigned by the
subsystem