Talk:Acoustic coupler

Previous discussions without headers
"Acoustic couplers are still used by people travelling in areas of the world where electrical connection to the telephone network is illegal or impractical." could somebody please give some examples? this is very interesting btw.

My computer engineering lecturer http://www.cosc.canterbury.ac.nz/warwick.irwin/ —Preceding unsigned comment added by Bostwickenator (talk • contribs) 09:47, 28 October 2008 (UTC)

Global coverage of topic
This topic is of necessity US centric. Having flat rate phone services was available in the U.S., and the cost of telephone communication was prohibitive in many countries for a long time. See http://infolab.stanford.edu/pub/voy/museum/pictures/display/3-2-Modem.htm I would remove that suggestion. GioCM (talk) 00:01, 26 February 2011 (UTC)

I have added historical information regarding Robert Weitbrecht, who really initiated the idea of an acoustic coupling to overcome the monopolistic restrictions that place deaf people at a great disadvantage. I just wonder why he was not mentioned in the first place. Is he less important than other engineers who developed different modems after him?

Deaf Advocates have approached MaBell and AT&T, asking them to come up with a solution with no success. The requests were declined, because they say that the deaf market is too minuscle and not worth the investment. The law requiring them to provide telephone access to rural areas, even if it brings financial loss, seems not to apply for deaf people. But now all telephone companies are required by federal ADA and state statutes to provide equal access to deaf and speech impaired people. 64.134.240.98 (talk)Hartmut, 30 April 2012 —Preceding undated comment added 16:43, 30 April 2012 (UTC).

Encoding
I don't think this article mentions how, exactly, bits were encoded in tones. Can anyone explain?

I'm curious now because, having gotten digital phone service (digital, i think, up to the vendor's modem, where I believe it is converted to analog) our alarm company says their monitoring may be adversely affected. They offer no rational explanation, but now I suspect it is because their encoding is occasionally mangled by the digitization. And finally, I'm guessing the encoding they use is whatever those old acoustic modems used. Captain Puget (talk) 16:48, 22 January 2015 (UTC)

Auto dial acoustic couplers
The 1983 movie "War Games" featured an acoustic coupler that could auto dial and hang up after calls. It was used to war dial possibly tens of thousands of numbers to find a certain computer used by a software company. Was this possible back then?96.251.0.173 (talk) — Preceding undated comment added 20:21, 15 March 2015 (UTC)