IUTC, IUTI, IUTM, IUTQ, and IUTS mapping and field descriptions
- Byte (hex)
- Contents
- 00–03
- Record ID:
- C"IUTC" for CONFIRM
- C"IUTI" for INDICATE
- C"IUTM" for IMMEDIATE
- C"IUTQ" for REQUEST
- C"IUTS" for RESPONSE
- 04
- ID is the primary address space ID (ASID). This field is 0 if
the ASID is greater than X'FF'.
- 05
- 0
- 06
- Primitive type and category
- Bit
- Primitive Type
- B'0000 ....'
- REQUEST
- B'0001'
- IMMEDIATE
- B'1100 ....'
- CONFIRM
- B'0100 ....'
- INDICATE
- B'1000 ....'
- RESPONSE
- Bit
- Category
- B'.... 0001'
- Connection Manager
- B'.... 0011'
- Data Manager
- 07
- Primitive Function
- When category in byte 06 is Connection Manager:
- X'0D'
- Activate SAP
- X'0E'
- Deactivate SAP
- X'10'
- Call Setup
- X'11'
- Call Clear
- X'12'
- Call Connect
- X'14'
- Call Status
- X'16'
- Enable IC
- X'18'
- Disable IC
- X'1A'
- Call Control
- When category in byte 06 is Data Manager:
- X'60'
- DMAct SAP
- X'63'
- Message Unit Data
- X'67'
- Message Data
- 08–0B
- Provider ID (TOKEN)
- 0C–0F
- If REQ or IND, address of PLIST list or 0. If CNF or RSP, status.
See z/OS Communications Server: IP and SNA Codes for more information about DLC status codes.
- 10–13
- Transaction ID
- 14–17
- PList (Parameter List) address
- 18–1B
- Return address of caller
- 1C–1F
- Request parameter header (RPH) address
