Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!pt.cs.cmu.edu!o.gp.cs.cmu.edu!andrew.cmu.edu!cb1p+ From: cb1p+@andrew.cmu.edu (Chris Beasley) Newsgroups: sci.electronics Subject: Modem over cordless phone? Message-ID: Date: 25 Mar 91 22:53:29 GMT Organization: Mathematics, Carnegie Mellon, Pittsburgh, PA Lines: 27 Hlo all, Having just purchased one of those spiffy new 5000 series cordless phones from AT&T I am now wondering if there is a way to hack it so I can use my modem and laptop out on the lawn. (later I'm going to want cellular ethernet on the cheap but we'll get to that) So I figure there have to be at least three ways to do it (even though I am a novice to phone hacking, I do have some reverse-engineering experience: I'm a reverse-engineer by trade :-)) Anyway, it seems likely that a hack on an old-style accoustic coupler would work but not be very elegant. The second possibility would be to hack an RJ-11 connector into the cordless half of the unit. I suspect there are two ways to do this: one involving something that works ok but is a bit of a hack and one that actually does the thing 'right'. The problem is that I really don't even know what the signal specs are for the four phone wires (I do know that you only need two for minimum functionality). So I am wondering if anyone can enlighten me as to what the various problems might be and how I could proceed short of breaking out the scope and voltmeter and poking around inside some different phone equipment? Has anyone tried anything half this crazy? Am I totally crazy? Does someone make a piece of equipment remotely like this? RSVP Beez.