Nortel Modular Ics 6.0 Installer Guide

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Running a Maintenance session to test a dead telephone
1. Run a Maintenance session to ensure that the telephone is 
not disabled. See Port/DN status on page 488.
2. Disable the port that the telephone is connected to using 
Port/DN status.
3. Enable the port that the telephone is connected to using 
Port/DN status.
Replacing a telephone
In a powered-up system, an existing telephone can be replaced 
by a new telephone. A new telephone is one that was not 
previously in service within the system.
Replacing telephones of the same type
If an existing telephone is unplugged, and a new telephone of 
the same type is then plugged into the same jack, for example, 
replacing a T7208 set with another T7208 set, the new 
telephone acquires the programmin gand the internal number 
of the old telephone. This is normally done to replace a 
defective telephone.
Replacing telephones of different types
If an existing telephone is unplugged, and a new telephone of 
a different type is plugged into the same jack, the new 
telephone keeps the old internal number. The new telephone 
receives a default profile for a telephone of its type. You then 
need to program the terminal as described in the Modular ICS 
6.0 System Coordinator Guide.
If the telephone being replaced has more lines than the new 
telephone, automatic outgoing line selection may not work 
with the Handsfree feature. A line must be selected manually. 
						

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Status of a telephone that was replaced
The old telephone that was unplugged and replaced by a new 
telephone loses its programming and internal number. The 
internal number of the old telephone has been given to the new 
telephone. The programming has either been removed or given 
to the new telephone when it was plugged into the old jack. 
The replaced telephone, if it is plugged back into the system, 
is now treated by the system as a telephone not previously in 
service.
Emergency telephone dead
1. Verify that the power at the ICS or Trunk Module is not on.
2. Verify that there is no dial tone at the emergency 
telephone.
3. Check that the external line and emergency telephone 
connections have been made correctly.
4. Ensure that the emergency telephone is not faulty by 
connecting it directly to the external line and listening for 
dial tone.
5. Verify that the ICS has a Loop Start Trunk Cartridge 
installed in slot 4. Verify that the Trunk Module has a Loop 
Start Trunk Cartridge installed in the left-most slot.
6. Verify that there is dial tone on lines 002 (ET1 on CD1) 
and 026 (ET2 on CD2) of the ICS and on the first line of 
each Trunk Module.
7. Replace the ICS if the emergency telephone is connected 
to the ICS or replace the Trunk Module if the emergency 
telephone is connected to the Trunk Module. 
						

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Problems with lines
The troubleshooting problems listed here focus on trouble 
with making calls or using lines. For problems which are 
specific to BRI lines, refer to Problems with BRI service on 
page 570.
Calls cannot be made (but can be received)
1. Press ³¥â.
2. Press a line button.
3. If an incorrect line number or name appears, or if neither 
appears, on the display, check the programming settings.
OR
If the correct line number or name appears on the display, 
make sure the external lines are properly cross-connected.
4. Check external lines by attaching a test telephone directly 
on the distribution block. 
5. Ensure that the 25-pair cable is properly connected to the 
modules or the ICS.
6. Run a Maintenance session. 
7. Use Module status to verify that the module the Trunk 
Cartridge is installed in is not disabled or unequipped.
8. Run a Maintenance session and disable the appropriate 
ports using Port/DN status. 
Charts showing external line port number defaults appear 
under Wiring charts on page 241.
9. Enable the appropriate ports using Port/DN status. 
						

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10. If you still cannot make external calls, power down, then 
power up the system. This should be done after business 
hours, to avoid losing calls.
11. To check the line, contact your service provider or central 
office.  
Dial tone absent on external lines
1. Use Button Inquiry (²¥â) to display the number of 
the external line you are testing.
2. Check for dial tone using a test telephone at the 
connections for the external line on the distribution block.
3. Make sure that a Trunk Cartridge for the line is properly 
installed in the ICS or Trunk Module.
4. Make sure that the Trunk Module fiber cable is properly 
connected to the Expansion Cartridge on the ICS.
Refer to Problems with trunk cartridges service on page 
566 and Trunk or Station Module down on page 574.
5. Run a Maintenance session to ensure that the line is not 
disabled. See Port/DN status on page 488.
Notify service provider of T1 signaling 
disruption.
Notify your T1 service provider before 
disconnecting your T1 lines, removing power to 
your system, or performing any other action that 
disrupts your T1 signaling. Failure to notify your 
T1 service provider may result in a loss of T1 
service. 
						

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Hung lines at a telephone
Line indicators that have been solid for a long time are the only 
visible indication that lines are hung. 
Possible problem
A line that has been redirected using Line Redirection may, 
under some circumstances, remain busy after a call is over. If 
this happens, the outgoing line for the redirection also remains 
busy. You can clear this kind of hung line only at the telephone 
that was used to redirect the line. 
Solution
1. Enter the Button Inquiry feature code (²¥â) at the 
telephone that was used to redirect the line. 
2. Press the button of the redirected line.
3. Press SHOW
 or £.
4. Press DROP
 or ¥. 
Both the redirected line and the outgoing line for the 
redirection should now be cleared.
Possible problem
The supervision and/or Discon timer programming for the line 
do not match the settings for the line at the central office.
Solution
Verify that your programming for the line matches the central 
office settings. 
						

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Possible problem
Lines are still hung after all the above solutions have been 
investigated or tried out.
Solution
For lines that are hung for any other reason, you will have to 
run a Maintenance session. 
1. Run a Maintenance session and go to Module status.
2. Disable and enable the affected Trunk Cartridge. 
Follow the procedures in the General troubleshooting 
procedure on page 548 before proceeding.
Auto-answer line rings at a telephone
This section describes possible problems and solutions if an 
auto-answer line mistakenly rings at a telephone.
Possible problem
You configured a loop start trunk as auto-answer but the 
installed hardware does not support disconnect supervision. In 
this case, the symptom would be accompanied by the Alarm 
62 code symptom.
Solution
Reconfigure the trunk as manual-answer.
OR
Replace the Trunk Cartridge with one that provides disconnect 
supervision. 
						

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Possible problem
The line is configured as auto-answer and unsupervised.
Solution
Reconfigure the line as manual-answer.
OR
Reconfigure the line as supervised.
Possible problem
The line is not equipped for disconnect supervision at the 
central office.
Solution
Reconfigure the trunk as manual-answer.
Possible problem
The Discon timer setting for the Trunk Cartridge in 
Trk/Line data does not match the setting for the line at the 
central office.
Solution
Reconfigure the Discon timer to match the setting at the 
central office. 
						

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Prime telephone gets misdialed calls
This section describes possible problems if the Prime 
telephone is receiving calls that it should be routed elsewhere.
Possible problem
The digits sent by a switch at a central office or in the private 
network did not match any Received number, the Auto DN, or 
the DISA DN. The call has been routed to the prime telephone 
for the incoming trunk.
Solution
1. Verify that the switch is sending the correct number of 
digits for the Received number length defined in your 
system.
2. Verify all the digit strings that the switch should be 
sending.
3. Check that you have defined the corresponding Received 
number for every target line in your system.
4. Make sure that the published telephone numbers for your 
network are correct. 
						

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Selected lines reads Not in service or Not available
When a user selects a line button and the set displays either 
Not in service or Not available, refer to the problem 
explanations in this section.
Possible problem
You have configured a line number associated with an E&M 
Trunk Cartridge DTMF receiver to appear at the telephone.
Solution
Reconfigure the line so that it does not appear at any telephone 
and configure another line to replace it at the telephone.
OR
Reconfigure the line as a different type and install trunk 
hardware to support the new type of line.
Possible problem
The Norstar system has taken an E&M line out of service 
because the far end did not respond to a disconnect signal from 
the Norstar system. The symptom would be accompanied by 
event code 263 in the System test log.
Solution
1. Check with the operators of the system at the far end and 
find out if their system is operating.
2. Check that your system hardware is receiving signals 
properly.
3. Check the trunk between your system and the far end 
system for a break.
4. Check that your trunk is properly configured.
5. Run a Maintenance session and go to the heading 
Module status. 
						

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6. Disable and enable the affected Trunk Cartridge. 
Possible problem
The Norstar system has detected no response on an E&M line 
from the system at the far end. The symptom will be 
accompanied by Event code 265 in the System test log.
Solution
Check with the operators of the system at the far end and get 
them to troubleshoot their system.
Possible problem
The line is connected to a DTI which is currently not in 
service.
Solution
1. Check if the green LED on the DTI is flashing to indicate 
that service is suspended.
2. Check if any yellow LEDs are on to indicate an alarm or 
error condition.
3. Check if the red test LED is on to indicate that a continuity 
loopback test is running.
4. Check that the cable connecting the DTI to the termination 
point from the central office or network is properly 
connected.
5. Check that the DTI is properly inserted in the ICS.
6. Run a Maintenance session to verify the status of the DTI.