# Home phone telephone Easter egg: calling your own phone line?

**URL:** <https://boards.straightdope.com/t/home-phone-telephone-easter-egg-calling-your-own-phone-line/940024>\
**Category:** Factual Questions\
**Created:** [April 15, 2021, 1:29am UTC](https://boards.straightdope.com/t/home-phone-telephone-easter-egg-calling-your-own-phone-line/940024 "2021-04-15T01:29:16Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![rowrrbazzle](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rowrrbazzle/32/414_2.png) [@rowrrbazzle](https://boards.straightdope.com/u/rowrrbazzle)\
**Post date:** [April 18, 2021, 1:52am UTC](https://boards.straightdope.com/t/home-phone-telephone-easter-egg-calling-your-own-phone-line/940024/31 "2021-04-18T01:52:28Z")

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An old thread on the ringback number.

> [@Phoning Yourself](https://boards.straightdope.com/t/phoning-yourself/29351):
>
> Once, many moons ago, I read somewhere that there is a certain number you can dial on your home phone that will cause your phone to ring if you hang up immediately after dialing it. I believe it can be used to test the ringer on the phone. I tried it, and it does work, but I can’t for the life of me remember what it is. Anyone know?

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