Question about NEC DTU 16-1 Corded Phone

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Handset not working

One of my dtu 16-1 phone has developed a problem. It work fine on speaker but when the handset is lifted you can not hear of speak to the caller

Posted by Russell Roberts on

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Anonymous

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Three possible problems - Bad handset, bad handset cord, or bad telephone. Try another handset and cord from a known good phone. If the problem phone still doesn't work the hookswitch spring may be weak. You can remove the screws from the bottom of the phone and take the bottom off. The hookswitch will have a small spring that you can stretch or rebend to put more upward force on the hookswitch to make it positively go off hook. Also the dtu phones have a jack for the handset and a jack for the headset on the bottom - make sure you are using the handset jack.

Posted on Apr 25, 2007

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