UPDATE: 8/29/11
Here’s the problem with this device that you might not notice. It has a 2.5mm adapter which is fine if you have an old Motorola feature phone with those super-thin headset jacks. But if you have a modern smartphone like a Windows Phone 7 device, you likely have a 3.5mm adapter.
So not a big deal right? Just get an adapter and be done with it, right? Not so much. This is more than just a headset: It’s a headset with a microphone. So you need to get an adapter with microphone connectivity specifically for cellphones. Trust me – this is a little harder to find than you might think. Radio Shack doesn’t sell them near as I can tell for example, much less Best Buy.
Fortunately, I found a place that sells this and bought one… and yes, it works – I’ve tested it.
Here it is, but be aware: It’s $9 + $3.95 shipping = $12.95.
http://www.factorydirectcellular.
com/home/universal/hf-adapter.htm
(CAREFUL! You can easily select the wrong adapter. Look for Universal 2.5mm and 3.5mm then select the 3.5mm Male to 2.5mm Female Stereo Adapter which should be about 4 items down)
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Yeah, this is awesome. Bought this immediately. Didn’t even think twice.
Old. School. Handset. For. Cell. Phone.
- 2.5mm jack will work with most phones (Motorola, LG, Samsung)
- Small button built-in to handset for answer/end
- Connection can also be made using a “hands free” type of adapter kit (not included)
- No batteries required
- Includes: handset and classic curly phone cord with connector
- Works with Blackberry (except Curve and some newer models with 3.5mm connectors)
- Does not work with RAZR or Nokia phones
- Works with iPhone (using Apple iPhone TTY Adapter, available from Apple)
- Now available in RED color
LINK: Retro Handset for Cell phone:
https://www.thinkgeek.com/gadgets/cellphone/7830/
kurtsh
Kurt's Thoughts 
You’re a loser.
And I’m jealous… I want an old-school, rotary dial phone for use in my Lync demos…
Being called a loser by the guy that never updates his blog is hilarious. I can’t go to your site because I’m allergic to dust. It kinda puts you in the same category as another guy we know that never updated their podcast, ‘eh? BTW: It’s called eBay. I think you can afford the $10 many are charging for an old school phone touch tone phone. (Incidentally, I don’t think you can use rotary. Most ESS phone systems turned off pulse dial compatibility in the late 90’s… although I could be wrong in some parts of America.)
http://shop.ebay.com/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=old+phone&_sacat=See-All-Categories