Network and Signaling Diagnostic

This program is used to maintain Network loops. It may be run in background, loaded during the daily routines, or loaded manually.

LD 30 is usually invoked as part of the Meridian 1 Daily Routines.

When invoked automatically by the system, the program performs the following tests:

network memory of each enabled network card
continuity of the speech path to each PE shelf (for enabled loops only)
signaling channel to each line or trunk card (on enabled loops only)
signaling channel through each ISDN line card
clock controllers are switched.

Digital telephones that pass the signaling test have their date and time updated to match the system clock.

Any SL-1 telephone or card that fails the signaling test may be disabled by this program. Use LD 32 to re-enable them.

At typical LD 30 output (as part of the daily routines) is shown below:

DROL000 DAILY ROUTINE BEGIN
NWS   LD30  BEGIN  00:00   8/8/2001

NWS501 4 0 13 : -9

NWS501 4 0 14 : -11

NWS501 12 0 13 : -14

DROL001 DAILY ROUTINE END
NWS   LD30  END  00:00   8/8/2001

This printout shows that three TN's (Lscu) have failed the signaling test. As the unit numbers are preceeded by a minus sign, they have been disabled. The fault may be:

PE card
The telephone set
Cabling (most probable!)

The units should be re-enabled in LD 32, and the cause of the fault investigated.

LD 32
NPR000
. ENLU 4 0 13 9

When invoked manually on systems other than the Option 11, the overlay may be used to:

conduct a complete test, as when the program is invoked automatically, except for switching the clocks
conduct a test on a specific PE shelf
get the enable/disable status of network loops
enable or disable network loops
clear alarm conditions and the maintenance display
download peripheral software on superloops
clear the contents of the Controller maintenance display
read the contents of the Controller maintenance display

When invoked manually on an Option 11 system, the program may be used to:

conduct a complete test, as when the program is invoked automatically, except for switching the clocks
clear alarm indications and the maintenance display
perform a signaling test on a specific card or unit
perform a continuity test and signaling test on the Option 11 XPE shelf

For further information, refer to the Software Input/Output Guide.