I lost a tru8866 compatible handset. I bought a replacement but cannot register it because I am out of extensions. How do I deregister the lost phone so I I can register the new one??.
The "END" and "#" key combination can be used for several purposes:
1) If wanting to use an ALREADY REGISTERED HANDSET on an alternate base, and if if the INITIAL BASE isn't available to deregister the handset:
1a) Press "END" + "#" until it for 5+ seconds (wait for it to beep)
1b) Choose the "Base Unavailable" option
1c) That'll deregister the CURRENT HANDSET so that it can be re-registered on ANY base.
2) If a BASE has a handset registered to it which you no longer want registered but the registered handset is missing or broken:
2a) Grab another WORKING handset which is properly REGISTERED to the BASE in question
2b) Press and hold the "END" + "#" key for 5+ seconds (wait for it to beep)
2c) Choose the "Deregister HS" menu option
2d) Pick the REGISTERED HANDSET # to de-register. (Every other registered handset EXCEPT THE ONE YOU'RE ON will appear in the list!)
I had this problem too. Hold "End" and "#"at the same time fora few seconds and it will deregister. Then just put it on the new base.
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