Network and Signaling Diagnostic
LD 30 is used to test 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, 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 digital 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 (Loop/Shelf/Card) have failed the signaling test. As the unit numbers are preceeded by a minus sign, they have been disabled. The fault may be:
- PE Line 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 ← enable specified unit
When invoked manually on large systems, 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
LD 32 Commands:
Use LD 32 to list any disabled units, and re-enable them by shelf or unit.
- <loop> and <shelf> for large systems, <module> for small systems (Option 11).
| Command | Description |
|---|---|
| LDIS l s | List TNs of all disabled units on specified shelf (Large Systems) |
| ENLS l s | Enable all units in the specified shelf, where: l = loop, and s = shelf |
| ENLU l s c u | Enable specified unit, where: l = loop, s = shelf, c = card, and u = unit |
| LDIS m | List TNs of all disabled units on specified module (Option 11) |
| ENLS m | Enable all units in the specified module, where: m = 0 - 4 |
| ENLU c u | Enable specified unit, where: c = card, u = unit |