The DDM Query Reply

Several DDM query reply formats are supported. Here are some of them:

Table 1. DDM Query Reply Base Format
Offset Length Content Meaning
0 1 word Length Length of structure
2 1 byte X'81' Query reply ID
3 1 byte X'95' Query reply type
4–5 2 bytes FLAGS Reserved
6–7 2 bytes LIMIN Maximum DDM bytes allowed in inbound transmission
8–9 2 bytes LIMOUT Maximum DDM bytes allowed in outbound transmission
10 1 byte NSS Number of subsets identifier
11 1 byte DDMSS DDM subset identifier