Question about AT&T E5634B Phone System w/ Caller ID
This problem can be caused by the following, A bad battery, (which you say you are all new). A full base memory and a Faulty main base unit
This main base unit can only expand to four handsets and no more. If the base unit has been reset then the assigned numbers for each handset would begin with " handset 1" if they show any other number when reset then it would not have been reset..To re-set main base you will have to
De-Register All Handsets
Unplug the power supply from the base unit then Remove all handsets from the charge cradles and base then Press and hold the PAGE button on the base.
Plug in the power supply again while pressing the PAGE button, Continue pressing PAGE until the IN USE and CHARGING indicators are lit. (this could take up to 10 seconds)
Release the PAGE button All Handsets will display "enter base id".
If this does not solve your problem then you will have to replace the main base
Posted on Apr 22, 2017
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Posted on Jan 02, 2017
This happens pretty regularly at my house. The solution is pretty simple. I take the batter out and put it back in and put it back into the cradle.
I have four kids at home and the phones are banged around quite a bit. I think the battery just loses a solid connection to the terminal points.
Now, can someone help me find a way to get my teenagers to implement this fix when they hear the battery beeping because of low battery?
Posted on Feb 08, 2008
SOURCE: How to de-register handset from
First deregister all handsets:
Step 1: At the base, press MENU, scroll to BASE SETTINGS, then press OK.
Step 2: Using the base dialpad, enter * * 3 3 5 7 8 2
Step 3: Re-register each system handset:
At the base, press MENU, scroll to DISPLAY BASE-ID, then press OK. The 15-digit base ID number will be displayed.
Step 4: Using the handset dialpad, enter the base ID number. Repeat the registration procedure for each system handset. Each handset is assigned a number in the order of registration
Posted on Apr 06, 2011
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