[time-nuts] Re: dial-up time source for NTP

[Richard Laager]

On 8/9/22 22:16, halmurray at sonic.net (Hal Murray) wrote:
> I haven't heard any mention of that in ages.  NTPsec dropped that driver (and
> many others).

I believe Hal is incorrect. NTPsec has not removed this driver. It's the 
"modem" driver.

If you're using Debian, it is not compiled into the ntpsec package (per 
my choice, as I'm the maintainer). But it does work if you build from 
source. Or at least it did the last time I played with it, a couple 
years ago:
https://lists.ntpsec.org/pipermail/devel/2020-September/009537.html

The most relevant git commit was to add this example config snippet:

refclock modem mode 1 minpoll 12 maxpoll 17
phone ATDT13034944774 # NIST

I hope that helps.

If you're doing this for any reason other than "because I can" fun, 
you're probably doing it wrong. Use GPS or the Internet for production 
stuff. But have fun!

-- 
Richard