The specs start about two thirds down from the top of the page.
Here's the website where I got the information Here are some specs that I found for the first generation dongle:Ĩ5VAC ring voltage, but I also read 63VAC from one of the Version 1 Magic Jacks I subscribed to the Magicjack service four times with four different dongles in the past and can say with confidence that the product provided dialtone, ringer voltage etc just like an actual analog phone line. Luckily I found an old expired Magicjack voip usb dongle that seems to work. I decided to see if I had anything laying around the house that I could use before ordering the parts and building my own. While trying to get my setup working I realized that neither my A or B modem was going to work without some kind of line voltage. Anyway, I think that I may have found an alternative to the diy and commercial line voltage inducer. I'm new to the DC online scene and just recently hooked up my DreamPi setup and used it for the first time.