Question about AT&T E252 Cordless Expansion Handset (att252)

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Microphone does not work

The microphone on all three of my at&t e252 cordless handsets have gone dead simultaneously. Have reset phones (pulled battery & rebooted) but to no avail. Only the corded base unit works.

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Re: microphone does not work

I had a similar problem. I noticed that if I put the call on hold when I took them off hold, the mic would work for approximately 5 seconds, so I figured it must be a "software" problem.
On the base unit, I used Setup Base > Deregister All and then re-registered by handset. The mic is working again (for now).

Posted on May 25, 2008

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Reset Procedure for Cordless Phones

What is the general reset procedure for cordless phones?
1. Disconnect Battery from handset(s)
2. Disconnect Phone Cord from wall jack
3. Disconnect Phone cord from base unit
4. Disconnect AC adapter from wall outlet
5. Allow to sit for 30 min
6. Reconnect Phone Cord to base
7. Reconnect Phone cord to wall jack
8. Reconnect AC Adapter to wall outlet
9. Reconnect Battery to hanset until you click or feel the plug snap into place
10. Re-Register Handset by placing on main base in most instances.
<KEYWORDS="RESET, call,? can?t tone, dial no flashing, unavailable, range, of out working, not up, messed>

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