mgetty to login prompt

call progress

mgetty/mg_ttyUSB0.log  during a login call:

--
12/16 12:14:46 SB0  mgetty: stable release 1.2.1
12/16 12:14:46 SB0  check for lockfiles
12/16 12:14:46 SB0  locking the line
12/16 12:14:47 SB0  lowering DTR to reset Modem
12/16 12:14:48 SB0  send: \d\d\d+++\d\d\dATV1&C1&D2&K3S7=60#CID=1[0d]
12/16 12:14:51 SB0  waiting for ``OK'' ** found **
12/16 12:14:51 SB0  waiting...
12/16 12:15:52 SB0  wfr: waiting for ``RING''
12/16 12:15:52 SB0  wfr: waiting for ``RING''
12/16 12:15:59 SB0  send: ATA[0d]
12/16 12:15:59 SB0  waiting for ``CONNECT'' ** found **
12/16 12:16:26 SB0  send:
12/16 12:16:26 SB0  waiting for ``_'' ** found **
12/16 12:17:01 ##### data dev=ttyUSB0, pid=1436044, caller='5392272040', conn='14400/ARQ/V32/LAPM/V42BIS', name='', cmd='/bin/login', user='bwann'


# modem caller sees:

CONNECT 14400/ARQ/V32/LAPM/V42BIS


Debian GNU/Linux ttyUSB0 57600

  Your connection: 14400/ARQ/V32/LAPM/V42BIS
  Your caller-id:  5392272040

wann.net UUCP service - 1.650.220.UUCP (8827)

Node 1: USR Courier 3453C, S 2.3.31 D 2.1.41, Cisco SPA122, voip.ms

uucp.wann.net login: bwann
Password:
Linux uucp.wann.net 6.1.0-rpi4-rpi-v8 #1 SMP PREEMPT Debian 1:6.1.54-1+rpt2 (2023-10-05) aarch64

  uucp.wann.net                          (Unknown CPU)
  Debian GNU/Linux 12 (bookworm)         3884 MB RAM / 0 GB SWAP
  6.1.0-rpi4-rpi-v8 (aarch64)

Last login: Tue Dec 16 12:03:58 PST 2025 from 2602:f7bf:1::240 on pts/0
bwann@uucp:~$

gistfile1.txt

systemctl enable mgetty@ttyUSB0
systemctl start mgetty@ttyUSB0

# systemctl status mgetty@ttyUSB0
● mgetty@ttyUSB0.service - mgetty on /dev/ttyUSB0
     Loaded: loaded (/etc/systemd/system/mgetty@.service; enabled; preset: enabled)
     Active: active (running) since Tue 2025-12-16 12:05:15 PST; 1min 32s ago
       Docs: man:mgetty(8)
   Main PID: 1432730 (mgetty)
      Tasks: 1 (limit: 3919)
        CPU: 19ms
     CGroup: /system.slice/system-mgetty.slice/mgetty@ttyUSB0.service
             └─1432730 /sbin/mgetty /dev/ttyUSB0

Dec 16 12:05:15 uucp.wann.net systemd[1]: Started mgetty@ttyUSB0.service - mgetty on /dev/ttyUSB0.

root@uucp:/etc/mgetty# ps auxww | grep mgetty
root     1432730  0.0  0.0   2296   820 ?        Ss   12:05   0:00 /sbin/mgetty /dev/ttyUSB0

login.config

# login.config
#
# This file is managed by Chef. Do not edit, all changes will be overwritten.
# See wn_mgetty/README.md
#
U*      uucp    @       /usr/lib/uucp/uucico -l -u @
/AutoPPP/ -    a_ppp   /usr/sbin/pppd auth -chap +pap login debug
*       -       -       /bin/login @

mgetty.config

# mgetty configuration file
#
# This file is managed by Chef. Do not edit, all changes will be overwritten.
# See wn_mgetty/README.md
#
# Global config
debug 4
fax-id
issue-file /etc/issue.mgetty
speed 57600
port-owner uucp
port-group uucp
port-mode 0664

# Port config
port ttyUSB0
  init-chat "" \d\d\d+++\d\d\dATV1&C1&D2&K3S7=60#CID=1 OK
  rings 2
  data-only y