gtpd2m1mData Communications Services Reference

Records To Be Initialized

Records Generated Off-Line

The following records are initialized by using the System Test Compiler to build a pilot tape. The pilot tape is subsequently loaded onto the system files by the System Data Loader. For more information about the System Test Compiler, see TPF Operations.

Fixed-file records are written to their allocated address and are retrieved by Message Switching programs by using File Address Compute.

Core Resident records are loaded into the Global Area by the Application Core Load and Restart Program at system restart time. These records are then accessed by Message Switching programs by using the appropriate tag in the Message Switching Global Field.

Records Requiring Initialization with Control Information and Data Fields

XC1CC
City Code Index Table

XK1CT
Terminal Index

XF1FF
Function Code Index Table

XI0DS
Input Log Directory (Optional)

XX1ON
Line IA/TA Index

XJ1LC
Line Index

XS0AA
XLMT Assembly Area

XW1OC
Output Control Table

XL0DS
Output Log Directory

XP1XP
Physical Line Conversion Table

XB0XB, XB1XB
Statistical Annex Table

XD0LS
Special Distribution Lists

XZ1AT
Terminal Annex Table

XR1TR
Terminal Routing Table

Records Requiring Initialization With Control Information Only

XV1XV
Input Control Table

XN1XN
Input Status Table

XE1SC
Message Segment Count Table

UV1RP
Retrieval Table

UV3RP
Purge Table

XT0CB
Transmission Control Block

XQ1XQ
Terminal Intercept Queue

XU2TQ
Transmission Queue Control Tables

Records Generated By Message Switching Programs

The following records are initialized by Message Switching programs as they are required. The file pool records are released after they are used.

UW2CP
Checkpoint Chain

UQ1UQ
Error Back-up Copy Records

XZ9ER
Error Correction Work Area - level six

XM0RL
Communication Message Format

UZ1PQ
Process Queue

UR1DS
Station Designator Sequence Table

XH0XH
Terminal Intercept Block

UU1TT
Terminal Time Table