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" 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 --- þ Synchronet þ End Of The Line BBS - endofthelinebbs.com .