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.
582 / Problems with lines 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.
Problems with lines / 583 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.
584 / Problems with lines 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.
Problems with lines / 585 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.
Problems with lines / 587 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.
Problems with lines / 589 P0603534 02Modular ICS 6.1 Installer Guide 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.