cb1p+@andrew.cmu.edu (Chris Beasley) (03/26/91)
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.
lrk@k5qwb.UUCP (Lyn R. Kennedy) (03/26/91)
cb1p+@andrew.cmu.edu (Chris Beasley) writes: > 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 The obvious problems are that the cordless phone is four wire and probably different impedances from you modem. Assuming you can get the modem to do four wire, then you have to get the levels close enough. I doubt the off-hook stuff would be worth fooling with, you can manually turn the thing on and get a dial tone. Then if your modem will dial in four wire mode, you should be able to originate calls. Forget answering. The ringer won't work right into a modem. > Am I totally crazy? > Beez. Yes (since you asked) :-) But let us know if you succede. --------- lrk@k5qwb.UUCP lrk%k5qwb@kf5iw.UUCP 73, utacfd.utarl.edu!letni!rwsys!kf5iw!k5qwb!lrk Lyn Kennedy K5QWB @ N5LDD.#NTX.TX.US P.O. Box 5133, Ovilla, TX, USA 75154 -------- "We have met the enemy and they are us." Pogo -----------------