Troubleshooting Terminal, Printer and Serial Device Connections - Edition 4 (32022-90030)

54 Chapter 4
TermDSM Commands
DI[AG] XI[NTERNAL]
DI[AG] XI[NTERNAL]
Determines if the SNP hardware is functioning properly. The internal
loopback test is executed only if the SNP is not started. No external
connections are required.
Security level: 2.
Syntax
XI[NTERNAL] dtcnum,cardnum
Parameters
dtcnum The number TermDSM associates with a particular
DTC. The DTC command lists each DTC with its
assigned number. This list is also printed when you
make a mistake while typing in a DTC number.
cardnum Number of the interface card within the DTC to which
the device is connected. The cards are numbered from
zero beginning at the bottom of the DTC. (Note that
SNP cards may not be mounted in slot 0 or 1 for
DTC 16, and slot 0 for DTC 48.)
Description
Determines if the SNP hardware is functioning properly. This internal
loopback test is executed only if X.25 is not started on this SNP (X25
Level 1, 2, and 3). No external connections are required.
All loopback tests are disruptive in the sense they will abort any
existing VC connections on that SNP. Other SNPs in the DTC will not
be effected.
When the subcommand is entered the following question is asked:
Do you want to stop looping if an error is found (yes/no)?
If you answer yes, the loopback tests will stop if an error is
encountered. The following is then printed on the terminal:
How many times do you want to repeat this operation?
Enter the number of times you want to run this diagnostic function.
Enter a number between 1 and 65535. The following is then printed on
the terminal:
Type CONTROL - Y to stop the looping.
You can use subsystem break (normally [CTRL]-Y to stop the diagnostic
at any time. The diagnostics prompt will be printed and you will be
allowed to enter another subcommand.