Subj : Re: USR USB Modem woes
To : Ted Long
From : Nelgin
Date : Tue Jan 31 2023 12:53 pm
On Sun, 29 Jan 2023 00:55:14 -0800
"Ted Long" <ted.long@VERT> wrote:
> I've been toying about with a retro BBS, targeted at hams and
> electronics hobbyists. Wanted to add a true dialup node, so I picked
> up a 56k USR 525 voice/data/fax modem. Has both DB-25 and USB ports.
> Claimed to work with Win 95/98/2000. Unfortunately, my Debian Linux
> box refuses to recognize it. I've tried mgetty, vgetty, and agetty,
> and the modem simply won't recognize the ATZ or ATDT7195551212
> strings, or respond with an error code. It's got a new USB cable and
> a DB25-to-DB9, so its not the cable....plugged it into my old
> ThinkPad, and it works great. I should mention that the Linux box is
> a Raspberry Pi 4B, 8 GB RAM, 500GB SSD.
>
Good to see this is working, unfortunately, if I had seen it sooner I
could have got you going right away. These USB modems create ttyACM
devices. This starts for abstract control model.
minicom -D /dev/ttyACM0 would have got you going, assuming the right
baud rate. I have a USB powered hub with 4 of these USR3637 modems. As
far as I can tell they're softmodems. Interesting they're no longer
available in the US or Canda but are for sale in EMEA, which is
annoying.
They're connected to an 8 port Grandstream ATA. 3 are for user dialin
using either a UK local call or US Dallas phone number, the 4th is for
me to do dialout and extension to extension connections for testing.
--
End Of The Line BBS - Plano, TX
telnet endofthelinebbs.com 23
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