Question about Toshiba DKT-2020 Corded Phone

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How to re-program toshiba dkt2020

I bought a toshiba dkt2020 on ebay and it has old phone numbers programed on it. Also, it only works on speaker phone period. I have to press the speaker button to hang up. I want to use headset but I can't figure it out



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I have a bit of bad news... your hook switch is bad. It's extremely common for this model phone and every single one will eventually have the problem. Unfortunately the problem starts out intermittently hanging up on callers and people do not understand what is happening. They get frustrated and replace their entire system... This is where most of the used phones come from so most used, even most "refurbished" phones of this type have the problem or will within a few months to a year.


I have repaired many thousands of these phones and it is so common that I am completely sure this is the case. Your phone has progressed to the point where the switch no longer (or rarely) works. Unfortunately the switch continues to go bad even in storage so the phone may have worked to some degree the last time it was used.


Our repair service is listed in the FIXYA repair directory for the USA. If you are interested you can find us by entering your zip code to the repair search box usually on the right edge of the FIXYA screen.


For you problem with stored numbers... the DKT2020 does not have any memory at all. All features, settings and information is stored in the main phone system so any stored numbers, names, etc.. are on your phone system for the port you connected the phone to.

Posted on Oct 19, 2007


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Posted on Jan 02, 2017


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Toshiba dkt2020 sd

If there is a Dnd butto programmed, it will be located on the top right hand side. By pressing the do not disturb button the ring wil be abbreviated. otherwise it you will have to go into the phone system programming to make that phone not ring.

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Need to fix date and time onToshiba DKT2020-SD

Depending on the type of system you have powering the 2010,this should take care of it.
Leave the handset on hook, press intercom # 6 5 2, then enter the time of a 24 hour clock, entering 2 digits for the hour, 2 digits for the minutes, and 2 digits for the seconds – enter a leading 0 for any single digit entered,
press Redial,
press Speaker.
This must be done at extension 200 – usually the receptionist phone.
For example, if the time is 2:15 P.M., press intercom # 6 5 2, 1 4 1 5 0 0, Redial Speaker

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This is done in program 39 in the system programming. It must be performed on ext 205 or port 005. Your manual can be found here.

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1. Press [DN] + #652 with the handset onhook.
2. Enter the time (HHMMSS) in the 24-hour clock format.
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Change Time on LCD for Toshiba DKT2020


I had the same problem Yesterday.

The way uoi change it, is you have to find the phone with the lowest extension, either 0, 10, 100, 200 etc....

Once you find that phone, leave the handset on the base.

Press Intercome, you should hear the speakerhone activate.

Press #,652

You will see it say ENTER TIME

It's on a 24 hour clock. HHMMSS Format, so it it is 2:05P.M., you would time 1405XX (XX means seconds, obviously not at critical as the touror minute.

Then press REDIAL to submit the change.

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there might be a quick set up card behind the little phone number card on the face

I’m happy to assist further over the phone at

Jan 02, 2008 | Toshiba DKT-2020 Corded Phone

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Toshiba dkt 2020

These phones do not store information of any kind. All the programming and memory is in the phone system itself.

The phone only works in speakerphone mode because the hook switch is broken. It is a VERY common problem that will happen to all of these Toshiba DKT2000 series phones at some point. The hook switch starts out just disconnecting calls and eventually will not let you use the handset at all. Unfortunately the problem can actually get worse even when the phone is not in use. That is why buying this series used is dangerous. Make sure the seller has replaced the hook switch and try to get a warranty.

Oct 19, 2007 | Toshiba DKT-2020 Corded Phone

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