Payphone inside the metro network, this time located on "Opera" Station (down-town Madrid). This payphone RING LOUD and the audio works both ways. Thanks to Santiago who's becoming a regular contributor of working callable payphones.
Send me an email on anything to do with payphones. The address is: email@example.com, you can also reach me on my BlackBerry: pin:20f92265 or even by Skype. Please look at this page if you would like to contribute your own payphone pictures.