Skip to main content
20 events
when toggle format what by license comment
Jan 11, 2018 at 14:37 vote accept Generalkidd
May 16, 2014 at 5:25 audit First posts
May 16, 2014 at 5:44
May 9, 2014 at 21:33 history bounty ended Doktoro Reichard
May 8, 2014 at 17:29 comment added Spiff @DoktoroReichard Sure, it was in Wikipedia's article on CSD: "Prior to CSD, data transmission over mobile phone systems was done by using a modem, either built into the phone or attached to it. Such systems were limited by the quality of the audio signal to 2.4 kbit/s or less." Although I note that this mention does not cite a source itself.
May 8, 2014 at 13:34 audit First posts
May 8, 2014 at 13:34
May 6, 2014 at 11:25 audit First posts
May 6, 2014 at 11:25
May 3, 2014 at 16:47 comment added Doktoro Reichard @Spiff for completeness sake, could you add the online reference that stated the 2400 bps limit in your answer?
May 1, 2014 at 20:31 comment added Spiff @Generalkidd D'oh! I just realized that in my last two comments, I was only thinking about one direction of audio. So I deleted those comments. I still don't think the cables you've linked to will work, because you need a transformer between the telephone line and the audio jack. I think you'd need something like this, in addition to creating your own adaptor from that pair (one input, one output) of 3.5mm jacks on that box, to a 3.5mm phone headset plug.
May 1, 2014 at 19:32 comment added Generalkidd What about this cable? It appears to be an RJ-9 to RJ-11 cable. ebay.com/itm/…
May 1, 2014 at 17:45 comment added Generalkidd Could I theoretically use a combination of these: showmecables.com/product/… ebay.com/itm/… in order to hook up my phone to the modem?
May 1, 2014 at 11:09 comment added MSalters @Keltari: That's why GSM has a Fax protocol too, besides Voice and CSD ;). GSM was truly designed as a digital network, with the intent to do more than just voice.
Apr 30, 2014 at 23:23 comment added Spiff @msb I see my Answer as basically a No, but it's a qualified No. :-)
Apr 30, 2014 at 23:21 history edited Spiff CC BY-SA 3.0
added 70 characters in body
Apr 30, 2014 at 23:11 history edited Spiff CC BY-SA 3.0
added 453 characters in body
Apr 30, 2014 at 22:35 comment added msb I'm not sure I understand this answer. @Spiff starts saying "No", then goes on to explain how it actually can be possible, even though highly difficult to implement and getting a very low bandwidth. Right? ...
Apr 30, 2014 at 21:15 history edited Spiff CC BY-SA 3.0
Added a lot more about dialup-like technologies over digital cell networks.
Apr 30, 2014 at 21:14 comment added Ramhound VoIP uses a similar behavior where if a few bits are off it just doesn't and raises it hands :-)
Apr 30, 2014 at 20:49 history edited Spiff CC BY-SA 3.0
added 401 characters in body
Apr 30, 2014 at 20:45 comment added Keltari This is a problem for analog faxes on digital phone lines as well
Apr 30, 2014 at 20:44 history answered Spiff CC BY-SA 3.0