Nortel Modular Ics 6.0 Installer Guide

							Tests / 531
P0992638 03Modular ICS 6. 0 Installer Guide
Operating a Continuity loopback testInstaller password required
You start the Continuity loopback test by pressing the button 
on the front of the DTI. Calls on all lines on the cartridge are 
automatically dropped when a loopback test is invoked. 
The red LED above the button remains on until the test is 
canceled.
Invoking a Continuity loopback test automatically cancels 
any other test in progress.
To stop the continuity loopback test, press the button on 
the DTI. The red LED above the button turns off when the 
test is canceled.
Loopback test for BRI lines
Installer password required
The loopback test for BRI lines loops the incoming BRI 
payload back to the local exchange (service provider) for 
evaluation of the transmission quality. Loopback tests should 
be conducted only under the guidance of the service provider, 
and the results from these tests are returned to the service 
provider.
You can run loopback payload tests simultaneously on 
multiple loops or multiple cards. The loop must be provisioned 
to perform the test. All calls on the card you are testing will be 
dropped at the start of a loop payload test.
Give notice that you are running a loopback 
test.
Calls on all T1 or PRI lines on the DTI will be 
automatically dropped when a loopback test is 
invoked. Use the Page feature to notify people 
using the system that a test is about to begin and 
that calls will be disconnected. 
						

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Operating a payload loopback testInstaller password required
Start with the display showing Loopback tests:.
15. Press ≠. Show Module: displays.
16. Enter a module number or press LIST
 to scroll through 
modules. Cards on KSU or Card on Mod X displays.
17. If you want to test cartridges on another module, press 
‘ until the display shows the module.
18. Press ≠. Cd1-KSU or Cd1-ModX displays.
If you want to test the second cartridge on the KSU, press 
‘ to display Cd2-KSU or Cd1-ModX.
19. Press ≠. 
If there is an analog cartridge in the slot or the slot is 
empty, the display shows Need digital crd. 
If there is a BRI cartridge with U-NT or S/T loops, the 
display shows Loop nnn.
20. Press ≠. Payload loopback displays.
21. Press START
 to begin the test. Payload running displays.
22. Press STOP
 to end the test.
Note:  You can exit programming or move on to other 
programming or loop testing while the  test is running. 
All calls on a BRI loop are dropped when you 
start loopback test.
While the loopback test is in progress, the BRI 
lines go out of service. There is no warning from 
the system. Pick an appropriate time to do a test 
and warn users that they will lose any calls in 
progress. 
						

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P0992638 03Modular ICS 6. 0 Installer Guide
CSU stats
Each DTI is equipped with an internal channel service unit 
(CSU). When enabled, the internal CSU monitors the quality 
of the received T1 signal and provides performance statistics 
and diagnostic information.
DTIs must be individually programmed to establish 
parameters for collecting and measuring transmission 
performance statistics by the CSU. 
Statistics
Installer password required
The CSU provides both performance and alarm statistics. 
Three performance parameters are accumulated:
errored seconds (ES-P)
severely errored seconds (SES-P)
unavailable seconds (UAS-P)
These parameters are defined as per TIA-547A. Errored 
seconds are enhanced to include control slip (CS) events.
The parameters are stored for the previous 15-minute interval, 
the 15-minute intervals in the last 24 hours, and the previous 
24-hour interval. Only near-end performance data is recorded.
The internal CSU continuously monitors the received signal 
and detects four types of transmission defects:
any active carrier failure alarms (CFA) — loss of signal 
LOS, out of frame OOF, alarm indication signal AIS, 
remote alarm indication RAI
the number of bipolar violations that occurred in the last 
minute 
						

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Modular ICS 6.0 Installer GuideP0992638 03
any defects that occurred in the last minute — loss of 
signal LOS, out of frame OOF, alarm indication signal AIS
the number of milliseconds of short term alarms in the last 
minute — loss of signal LOS, out of frame OOF, alarm 
indication signal AIS, remote alarm indication RAI. 
A shortterm alarm is declared when the detected defects 
persist for tens of milliseconds.
A carrier failure alarm (CFA) is a duration of carrier system 
outage. CFA types reported can be mapped to CFAs defined in 
TIA-547A and TR62411 as follows:
The criteria for declaring and clearing the alarms is selectable 
to meet those in TIA-547A or TR64211.
Checking the performance statistics
Installer password required
To check the performance statistics, start with the display 
showing CSU stats:
1. Press ≠. Show card: displays. 
If the ICS in not equipped with DTIs, or if both cartridges 
have their internal CSU setting programmed to off, the 
display shows Unequipped.
2. Press Ú or Û depending on which Trunk Cartridge you 
are checking. Cd1-KSU or Cd2-KSU: displays.
3. Press ≠ to see the results.
NorstarTIA-547ATR62411
LOS CFARed CFARed CFA
OOF CFARed CFARed CFA
AIS CFARed CFAAIS CFA
RAI CFAYellow CFAYellow CFA 
						

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4. Press TIMER. The display shows the date and time that the 
system began collecting statistics. 
5. Press ‘. Performnce stats displays.
6. Press ≠ to view the performance stats. 
Current interval displays. 
7. Press ≠ to display the duration of the current 
interval.
OR
Press  ‘ until the display shows the type of 
interval statistics you want to check. Options are: 
15 min intervals for intervals in the last 24 hours, 
numbered from the most recent (01) to the oldest (96). 
Press 
≠, then enter an interval number, 
or press 
‘ to view the most recent interval. 
The display shows the start time of the interval.

24 hour summary for a summary of the previous 24 hours. 
Press 
≠ to display the number of intervals in the 
summary.
8. Press ‘. ES: displays the number of errored 
seconds. 
9. Press ‘. SES: displays the number of severely 
errored seconds.
10. Press ‘. UAS: displays the number of unavailable 
time seconds.
11. Press – until the display shows Performnce 
stats. 
						

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Checking the CSU alarmsInstaller password required
To check the CSU alarms, start with Performnce stats.
1. Press ‘. Alarm stats displays.
2. Press ≠. Active alarms displays.
Checking active alarms
Installer password required
Start with the display showing Active alarms.
1. Press  ≠. The display shows the first active alarm 
or no active alarms.
2. Press  ‘ or  “ to cycle through the 
complete list of active alarms.
3. Press – to return to Active alarms.
Checking carrier failure alarms
Installer password required
Start with the display showing Active alarms.
1. Press ‘. CFA alarms displays. 
2. Press ≠. 
The display shows one of the following: 
LOS CFA history, OOF CFA history, RAI CFA history or 
AIS CFA history.
3. Press ‘ until the display shows the type of alarms 
you wish to view.
4. Press ≠. The display shows the first history item 
and the time that the alarm started.
5. Use ‘ and “ to move through the 
history items. 
						

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Checking bipolar violationsInstaller password required
Start with Active alarms.
1. Press ‘ until you find Bipolar violatn.
2. Press ≠. The display shows the number of 
bipolar violations that occurred in the last minute.
Checking short term alarms
Installer password required
Start with Active alarms.
1. Press ‘ until you find ShortTerm alarms.
2. Press ≠. 
The display shows the first type of shortterm alarm and the 
number of milliseconds, not necessarily contiguous, it was 
active in the last minute. 
3. Press ‘ and “ to move through the 
short term alarms.
Checking defects
Installer password required
Start with Active alarms.
1. Press ‘ until you find Defects.
2. Press ≠. 
The display shows the first type of defect and the number 
of milliseconds, not necessarily contiguous, the hardware 
reported it active in the last minute.
3. Press ‘ and “ to move through the 
defects. 
						

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Resetting all statisticsInstaller password required
Start with the display showing Alarm stats:
1. Press ‘. Stats log displays.
2. Press ≠. Reset stats? displays.
3. Press YES
 to erase all the current statistics and begin 
collecting statistics again. 
						

							Diagnostic tools / 539
P0992638 03Modular ICS 6. 0 Installer Guide
Diagnostic tools
The command under this heading allows you to perform a 
warm restart on your system.
1. At the Diagnostic prompt, press ≠. 
Restart system? displays.
2. If you are sure you want to perform a warm start on your 
system, press YES
. Otherwise, press CANCEL. 
						

							540 / Link Status
Modular ICS 6.0 Installer GuideP0992638 03
Link Status
Fractional PRI
When you purchase PRI from your service provider, you can 
request the number of B-channels that are allocated for you to 
use. For example, you may want to use only 12 B-channels 
instead of 23 B-channels. If this is your situation, you should 
disable all the B-channels that you do not need.
It is recommended that the number of lines that are 
deprovisioned on a DTI card (configured as PRI) be the same 
as the number of B-channels that are disabled. For example 
when B-channels 13-23 are disabled, you should deprovision 
lines 13 to 23.
Start with the display showing Maintenance
1. Press ≠. System version displays.
2. Press ‘ until you find Link status.
3. Press ≠. Cards on KSU displays.
4. Press ≠. Cd1-KSU: PRI displays.
5. Press ≠. B channeldisplays.
6. Press ≠. You can view the status of the PRI 
channel, for example: PRI:B01 Idle.
Note:  When the display shows PRI:B01 Near, it means that 
the channel has been disabled by Norstar. 
When the display shows PRI:B01 Far, it means that 
the channel has been disabled by the CO.
7. Press Enable
 or Disable key to change the setting for the 
channel or press ‘ to move to the next 
B-channel.