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Question about AT&T 2.4 GHz 2255 Cordless Phone

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Phone Installation - Out Of Service

My parents have a set of AT&T 2.4 GHZ 2255 Cordless phones with one handset on the base and a remote handset. These were working at one time, but the base got unplugged for an extended period of time and now both handsets are showing "Out Of Service". They don't have any documentation for installing. I know that the handsets have to search for the signal on the base but I don't know how. Can you offer any help? Thanks

Posted by Ken Pannell on

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  • glgates Nov 23, 2008

    I have the same basic problem. I cannot get the base to recognize one of the handsets. I have tried ti re-initialize several times with the operating handset active and inactive but still have been unable to get past the "Out of Service' message on the other one.The batteries are all fully charged and the unit works fine with the one handset. I've tried handsets from another unit with the same result. Any help would be appreciated.

  • Anonymous Mar 25, 2014

    Caller ID does not show up. AT&T service lineman's phone shows Caller ID just fine on his set, but
    CL83451 does not show on either Base unit or handsets.
    Just "Incoming Call"

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1 Answer

Greg Cann

Greg Cann

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Find the manual on the link below. Check batteries are charged preferably for a few hours then perform the reset as per the manual: To re-initialize the handset and base: 1 Disconnect the power to the base. 2 Remove the handset battery pack. 3 Wait at least 15 seconds. 4 Insert the handset battery pack. 5 Connect the power to the base. 6 Put the handset in the base to re-initialize. 7 Wait for handset to display READY (or handset name). http://telephones.att.com/docMgt/public/art/306/2255_.pdf

Posted on Jul 28, 2007

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