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Nortel Modular Ics 6.1 Installer Guide

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    							Problems with lines / 581
    P0603534  02Modular ICS 6.1 Installer Guide
    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 600.
    Calls cannot be made (but can be received)
    1. Press ≤•‚.
    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 on which 
    the Trunk Cartridge is installed 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 252.
    9. Enable the appropriate ports using Port/DN status. 
    						
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    Modular ICS 6.1 Installer GuideP0603534  02
    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 (≤•‚) 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 
    596 and Trunk or Station Module down on page 604.
    5. Run a Maintenance session to ensure that the line is not 
    disabled. See Port/DN status on page 514.
    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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    P0603534  02Modular ICS 6.1 Installer Guide
    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 (≤•‚) 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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    Modular ICS 6.1 Installer GuideP0603534  02
    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 576 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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    P0603534  02Modular ICS 6.1 Installer Guide
    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. 
    						
    							586 / Problems with lines
    Modular ICS 6.1 Installer GuideP0603534  02
    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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    P0603534  02Modular ICS 6.1 Installer Guide
    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. 
    						
    							588 / Problems with lines
    Modular ICS 6.1 Installer GuideP0603534  02
    5. Run a Maintenance session and go to the heading 
    Module status.
    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. 
    						
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    Possible problem
    The line has been disabled for maintenance purposes.
    Solution
    Enable the line.
    OR
    If the line will be out of service for some time, configure 
    another line to replace it on the telephone.
    Possible problem
    The loop or line has not been provisioned.
    Solution
    Provision the loop or line.
    Selected line pool displays: No free lines 
    If the user selects a line pool and the telephone displays 
    No free lines, refer to this section for solutions.
    Possible problem
    If this happens often, there are not enough lines in the line pool 
    to serve the number of line pool users.
    Solution
    If the line pool contains loop start trunks, enter programming 
    and move under-used loop start trunks from other line pools 
    into the deficient line pool.
    OR
    If the line pool contains E&M trunks, order more trunks from 
    the telephone company or private network vendor. Install  
    						
    							590 / Problems with lines
    Modular ICS 6.1 Installer GuideP0603534  02
    additional Trunk Cartridges of the appropriate type. In 
    programming, add the new trunks to the deficient line pool. 
    						
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