Termid            (TCT)

DESCRIPTION
Sun MTP uses the "Termid" to internally refer to a terminal. An application 
program specifies the "Termid" in an EXEC CICS statement to access a specific 
terminal. The TCT Screen shows an entry for each terminal connected to a given 
Sun MTP system, either predefined or autoinstalled. The entry may be for a 3270 
device or emulator, an EPI terminal, a TN3270 terminal, a UNIX-based terminal 
handler, or a surrogate used for transaction routing. Sun MTPScan identifies each
form of terminal with the "Type" field. 


VALUES
"Termid" is a four character identifier. There are two kinds of names for this
datapoint: those set by the administrator and default Sun MTP names. The former
are set in the Sun MTP Terminal Control Table (TCT). At system initiation, Sun MTP
allocates its internal TCT structures to the size of the licensed number of 
users. This is why the TCT Screen shows free entries up to the licensed number 
users.

Each TCT slot receives a default name with a format of AXXX, where A is a letter
ranging from A to Z, and XXX is a number ranging from 000 to 999. The initial
"Termid" is defined with the "Start Termid" field in the System Initialization
Table (SIT).

The devices configured in the TCT by the administrator overlay the defaults
created by Sun MTP. For example, when the administrator configures 12 3278's,
the "Termid" for these 12 devices overlay the initial 12 default values.


INTERPRETATION
When a non-predefined terminal logs off, the entry returns to the default named
free pool. Each non-predefined subsequent connection to the system uses the next
available entry in the TCT.


CONCLUSIONS
If it is unavoidable that the names of predefined terminal entries or terminals
that dynamically logon to the region clash with Sun MTP-generated default 
terminal names, reassign the generated default names using the "Start Termid" 
field in the Sun MTP SIT.
