Mitel Sx 200 Ml Pabx Lightware 16 Instructions Guide

1 General 
1.1 This practice describes the maintenance philosophy, features, and facilities of the 
SX-200@ ML Private Automatic Branch Exchange (PABX). Diagnostic tests, 
maintenance aids, local and remote terminals, and other available tools assist 
maintenance users to ensure a continued high standard of efficiency and 
performance. Further details concerning maintenance may be found in the practices 
listed in Table l-i. 
Table l-l SX-200 ML PABX Practices 
9109-098-l 
00-NA General Description...

General Maintenance Information 
l-2 Issue 1 Revision 0 March 1997  

, 2 Maintenance Tools 
The Maintenance Terminal 
2.1 The RS-232 ASCII Maintenance Terminal is the primary maintenance tool for the 
SX-200 ML PABX. There can be only one maintenance session active at any time. 
The maintenance terminal connects by means of a standard g-pin RS-232 cable. 
One end of the cable is plugged into the main RS-232 communication port of the 
terminal; the other end is plugged into the Maintenance Connector port on the cabinet 
backplane. Refer to Figure 2-l. 
A wide range of...

General Maintenance Information 
-ylll I Tl AIIAPTER ASSEMBLY .- . .-. .--- ..--. P/N 9400-I 00-302-NA 
(OPTIONAL - SHOWN INSTALLED) 
BAY PSU AC PLUG 
ACCESS PANEL 
PFT CONNECTOR 
SYSTEM GROUND LUG 
cc0179 
Figure 2-l Rear Panel of the SX-ZOO ML Cabinet 
2-2 Issue 1 Revision 0 March 1997  

3 Alarms 
General 
3.1 Alarms allow the SX-200 ML PABX to determine its own functional state. The Alarm 
Manager software program monitors the performance of all peripheral devices in the 
system, and compiles up-to-date statistics on anomalies. The alarm level is 
determined by the actual or potential effect on service that the anomalies cause. 
Alarm Levels 
3.2 There are four distinct levels of alarm defined for the maintenance system. These 
levels provide maintenance personnel with up-to-date...

General Maintenance Information 
Alarm Types 
3.4 Because the SX-200 ML PABX is modular in design, the Alarm Manager keeps alarm 
statistics in three categories: 
l Bay Alarms - alarm levels of the categories specific to the one bay in the system. 
l System Alarms - alarm levels of the categories on a system-wide basis. 
l Overall Alarm - overall system alarm level, derived from all bay alarms and sys- 
tem alarms in all categories. This is the alarm that is displayed on the upper right 
corner of the...

4 The Maintenance 
Manager 
General 
4.1 The Maintenance Manager is the central maintenance soft :ware program in the 
SX-ZUO ML PABX system software. Its responsibility inck Jdes receiving requests to 
run diagnostic tests, managing test schedules (queues), and initializing diagnostic 
tests. 
Diagnostic Test Queues 
4.2 Diagnostic tests are grouped into three different categories: power-up, background, 
and directed. The test schedules (queues) are prioritized along the same categories. 
Table 4-l...

General Maintenance Information 
Testing 
4.3 The Maintenance Manager controls the entire test sequence on any device under 
test. The general test sequence for any peripheral device is: 
1. The Maintenance Manager locates a device with pending diagnostic test requests 
on the highest priority test queue. 
2. The device is requested from call processing for testing. If the device is idle, the 
request is granted. 
3. Any resources required to perform tests on the device are allocated. 
4. The series of...

The Maintenance Manager 
2. The maintenance person has the option of returning a faulty device to service, if 
desired, through the maintenance interface (terminal, console, or test line); see 
the 
I%-232 Maintenance Termha/ Practice. 
3. When a device fails diagnostic testing and is subsequently removed from service, 
the Maintenance Manager continues testing it. If a device passes seven consec- 
utive tests after being removed from service, it is returned to service. 
The Maintenance Database 
4.5 All...

General Maintenance Information 
Table 4-2 The Maintenance Device Work Area (continued) 
DWA Entry 
Power-up Enable 
Background Enable Description 
For each circuit on the card, indicates whether power-up diagnostics are 
enabled. 
Foreach circuit on the card, indicates whether background diagnostics 
are enabled. 
Page2 of2 
Maintenance Device Work Area 
4.6 When a card is first programmed, a maintenance device work area is assigned for it. 
This work area can be accessed by two softkeys: MT-DWA and...