Troubleshooting - IBM 412 - 412 Corded Phone Installation And Operation Manual

Advanced home/office 4 line telephone
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Intercom, line status, auto-answer, privacy or auto-line selection are inoperable.
Check if Lines 1 and 2 are cross wired in the wall jack.
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If used, see if you may have installed your 2-line adapter incorrectly.
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Be sure all extensions in the system are connected to [LINE 1].
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Check the assigned extension codes, making sure they are unique.
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Be sure the length of cable between stations does not exceed 300 feet.
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Check that all phone lines are correctly connected to each station (every [LINE 1] is connected to
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the appropriate line, every [LINE 2] is connected to the appropriate line, and so on.)
Remove all RFI filters from the system wiring. You may also need to contact your local telephone
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company to have any RFI filter removed from the company side of the connection.
No dial tone/phone will not dial out.
Check that you have plugged the AC power adapter into a working AC power outlet.
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Confirm that the AC power adapter is plugged into the DC jack locates at the unit.
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Check all telephone cord connections.
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Try another wall jack.
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Make sure the line connection is programmed ON.
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Can't hear the ring signal.
Check the ringer volume controls. At lowest level the ring may not be heard.
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Check the status of DND (Do Not Disturb). Make sure the DND LED is not lit.
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Can't hear the ring signal on one line only.
Check the ringer setting on that line.
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See Programming Ringer ON/OFF.
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While on a call do you hear another call on the line or are you experiencing radio frequency
interference?
Make sure all wiring is twisted pair, including modular cords on non-system devices.
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Check the wiring for bad connections.
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Reaching the wrong number in speed dialing.
Check that you are accessing the correct dial group (see speed dialing).
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TROUBLESHOOTING

33

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