Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Carlos E. R." Newsgroups: comp.os.linux.misc Subject: Re: Older Hardware Still Works Date: Thu, 14 Aug 2025 10:59:15 +0200 Lines: 39 Message-ID: References: <4vecnYdHDPuMwwT1nZ2dnZfqn_idnZ2d@giganews.com> <91umQ.65737$Rnw6.13108@fx48.iad> <107hopd$3pna1$15@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net tIcbyL/a7K/iBVkSK1mRogajftw54zxEStoyJBUIXD87vv808X Cancel-Lock: sha1:19qDt4j355Gy/opusrSB3yfkjI0= sha256:jyrgWeoNNOvBnu8D05aFVChen423wGe/XgPvgRr5JiA= User-Agent: Mozilla Thunderbird Content-Language: en-CA, es-ANY In-Reply-To: Xref: csiph.com comp.os.linux.misc:71016 On 2025-08-14 08:06, c186282 wrote: > On 8/14/25 12:04 AM, rbowman wrote: >> On Wed, 13 Aug 2025 23:27:28 -0400, c186282 wrote: >> >>> On 8/13/25 6:18 AM, The Natural Philosopher wrote: >>>> On 13/08/2025 06:37, c186282 wrote: >>>>> STILL have to turn the pulse dialing into at >>>>>     least DTMF tones. Don't think a Pico would do that >>>> Of course it would. Piece of piss. That level of audio is easily done >>>> with PWM. >>> >>>     Umm ... probably. Not SURE how much 'fidelity' is needed to work the >>>     phone system though. >> >> Captain Crunch! > >   Air whistle - probably a pretty pure tone. > >   In any case, some objective experiments will >   show ..... > >   My GUESS is that the phone network is pretty >   tolerant - but that's to be proven. > >   If it IS tolerant then even 8-bit sound from >   a Pi or Ard oughtta do it. It is tolerant. Was, rather. However, current networks are VoIP; the house phones are handled at the router or ONT device, and these might not be that tolerant. My router does handle pulse dialing, I tested it. But I don't have any rotary phone left, Telefónica rented them to us, and picked them all and crushed them to pieces in the transition to more modern terminals. -- Cheers, Carlos E.R.