Is there a device so that when my iphone rings, I can make it ring the old landline phone in my house? The landline is disconnected btw?

I have an old fashioned/antique 2 piece wall phone that works, but I'm disconnecting land line service. So is there a device I can plug my iPhone into when at HOME, that will allow this old phone to also ring when I get a call on my iphone? I don't need the old phone to ring unless I'm at home with iphone plugged into this device, if any such device exists?

There's a device I saw called talk-n-dock, but does it take iphones?

You could build it yourself, but it has been done for you as well. But the devices for sale assume a working land line. You will still have to cobble together talk battery and signaling battery for the ringer, and some form of un-interuptable power supply to make it real.

The latest Talk-n-Dock has bluetooth connections.
so that would do the job… (no need for landline that I can see)

Though It does say it can do both 'if' you had a landline.

http://www.phonelabs.com/prd05.asp
"The Dock-N-Talk™ can pair with up to 8 Bluetooth enabled cell phones for immediate connection with our newest Bluetooth Module (Model BT03-B)!"