Nortel Compact Ics 6.1 Installer Guide

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Problems with the NT1
The table describes the indicators found on the standalone NT1 
manufactured by Nortel. Other models or makes of NT1 may have different 
indicators. For more information about the NT1, see the ISDN chapter.
NT1 status indicators  
 IndicatorStateMeaning
off
on
flashingpower is unavailable
power is available
system is on backup power
S or Toff
on
flashingnormal operation
no synchronization with terminal 
equipment
high error rate
Uoff
on
flashingnormal operation
no synchronization with the network
high error rate
off
on
flashingnormal operation
test in progress
self-test failed 
						

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ICS down
If AC power is present and the indicator light on the ICS is off, replace the 
fuse in the ICS (see illustration on next page). 
1. Disconnect all central office and station lines from the ICS. Power 
down the ICS by unplugging it.
2. After powering down the ICS, use fingernails or screwdrivers to pinch 
the tabs on the fuse drawer and remove it from the ICS. The cables 
easily and safely can be pushed aside to reach the fuse drawer.
3. Remove the fuse from the left-hand compartment and discard. This is 
NOT the one labeled spare fuse.
4. Insert the new fuse into the left-hand compartment.
5. A spare fuse is located in the right-hand compartment of the fuse 
drawer. This fuse is labeled as a spare fuse.
6. If there is no spare fuse, you will have to obtain a replacement. 
 
7. Replace the fuse drawer in the ICS and restore power to the system.
8. Connect the central office and station line connectors.
Your Norstar system requires connection to a 
grounded outlet.
To prevent possible injury from voltage on the 
telephone network, disconnect all central office and 
station lines before removing plug from the electrical 
outlet.
Replace with the same type of fuse.
For continued protection against risk of fire, replace 
only with the same type and rating of fuse (250 V, 
3.15 A). 
						

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Changing a fuse    
Fuse drawer
Bottom view of ICS Fuse 
						

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Problems for network or remote 
users
Remote feature code gets no response
Possible problem
A Norstar user has called into another Norstar system and is trying to 
activate a remote feature but gets no response after dialing the feature code.
Solution
1. If a COS password is needed for remote access, make sure the user has 
entered the appropriate password.
2. Make sure that the remote caller is dialing the feature code correctly. 
Use the asterisk (*) character, followed by the feature code, to activate 
a remote feature. 
Do not use 
² for accessing features on a remote Norstar system.
3. Ensure that the remote user is dialing tones, not pulses once the call is 
answered.
4. Make sure an appropriate remote package is in use for the incoming 
line.
5. Check the restrictions for the remote package used with the incoming 
line.
Dialed number gets ringback and the wrong 
person
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. 
						

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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.
Dialed number gets stuttered dial tone instead of 
ringback
Possible problem
The remote caller has tried to reach a Norstar target line, but has reached a 
trunk with DISA instead. Alternatively, the Norstar system has mapped 
incoming digits onto the DISA DN.
Solution
1. Verify all the digit strings that the switch should be sending.
2. Check that you have defined a corresponding Received number for 
every target line in your system.
3. Check that you have defined the correct DISA DN for your system.
4. Make sure that the published telephone numbers for your network are 
correct.
Dialed number gets dial tone instead of ringback
Possible problem
The remote caller has tried to reach a Norstar target line, but has reached 
the Norstar system instead. Norstar has mapped the incoming digits onto 
the Auto DN. 
						

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Solution
1. Verify all the digit strings that the switch should be sending.
2. Check that you have defined the corresponding Received number for 
every target line in your system.
3. Check that you have defined the correct Auto DN for your system.
4. Make sure that the published telephone numbers for your network are 
correct.
Dialed number gets busy tone
Possible problem
The target line that the incoming digits map onto is busy, and  there is no 
prime telephone for the incoming trunk. 
Solution
For maximum call coverage, make sure that you configure a prime 
telephone for every incoming trunk.
Dialed number does not get through
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. There is 
also no prime telephone assigned for the incoming trunk. In this case, the 
caller may hear overflow tone from the Norstar system or a recorded 
message from the originating switch.
Solution
1. Configure a prime telephone for every incoming trunk.
2. Verify that the switch is sending the correct number of digits for the 
Received number length defined in your system.
3. Verify all the digit strings that the switch should be sending. 
						

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4. Check that you have defined a Received number for every target line 
in your system.
5. Make sure that the published telephone numbers for your network are 
correct.
Possible problem
The Norstar system did not receive some or all of the incoming digits.
Solution
1. Check that the system hardware is receiving signals properly.
2. Verify that the switch is sending the correct number of digits for the 
Received number length defined in your system.
3. If the switch at the far end is sending pulse signals, make sure they are 
being sent at the proper rate. (Pulse digits must be 300 ms or more 
apart for Norstar to receive them.)
Dialed DISA number gets ringback instead of 
stuttered dial tone
Possible problem
The remote caller has dialed a DISA number, but has instead reached a 
target line, or has been routed to the prime telephone for the auto-answer 
trunk. The Norstar system has mapped the incoming digits from a switch 
onto a target line, or has been unable to map the digits anywhere.
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 correct DISA DN for your system.
4. Make sure that the published telephone numbers for your network are 
correct. 
						

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Dialed DISA number gets dial tone instead of 
stuttered dial tone
Possible problem
The remote caller has dialed a DISA number, but has reached the Norstar 
system instead. The Norstar system has mapped the incoming digits from 
a switch onto the Auto DN.
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 correct DISA DN for your system.
4. Make sure that the DISA DN and Auto DN are different enough to 
prevent misdialing.
5. Make sure that the published telephone numbers for your network are 
correct.
DISA user gets overflow tone when entering 
COS password
Possible problem
The remote caller may have entered an invalid password.
Solution
Check the Administration programming under COS passwords and verify 
that the caller has a valid password.
Possible problem
The remote caller may have entered an asterisk (*) as one of the six digits. 
						

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Solution
Instruct remote callers to enter their COS password correctly: enter six 
digits.
Possible problem
The remote caller may have entered a number sign (#) as one of the six 
digits.
Solution
Instruct remote callers to enter their COS password correctly: enter six 
digits. The number sign (#) may be entered after the sixth digit, but is not 
required.
Possible problem
The remote caller may have waited more than 15 seconds between entering 
digits.
Solution
Instruct remote callers to enter their COS password correctly: enter six 
digits, and do not pause too long between digits.
Possible problem
The caller may be dialing from a rotary-dial telephone or from a 
push-button telephone that uses pulse signaling.
Solution
Inform remote callers that they must dial from a push-button telephone that 
uses DTMF, also known as touch-tone signaling. 
						

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Dialed feature code gets overflow tone
Possible problem
The remote caller does not have access to that feature.
Solution
1. If the call came in on a trunk with DISA, check the Class of Service 
that is associated with the remote callers COS password. If it is too 
restrictive, modify the remote package assigned to the COS password, 
or assign another COS password that is more suitable.
2. If the call came in on a trunk without DISA, check the remote package 
that you assigned to the incoming trunk. Make sure that it gives the 
appropriate access to the remote caller.
Possible problem
The feature code is not valid.
Solution
1. Make sure that remote callers have a correct listing of the features that 
are programmed for remote access.
2. Ensure that remote callers are dialing the feature code correctly. Press 
¥ followed by the feature code to activate a remote feature.
Possible problem
The caller may be dialing on a rotary-dial telephone or on a push-button 
telephone that uses pulse signaling.
Solution
Inform remote callers that they must dial from a push-button telephone that 
uses DTMF, also known as touch-tone signaling.