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These are generic modems sold under different names (Voluxe, MagiDeal, Baoblaze, Infosec, Kirmax), labeled in the most generic way
Well mine was named Kalea, opening the device it turns to be a connexant chipset CX-39010.pdf
Now I highly doubt these chips were made in 2021, the board itself is labeled 2017.
Bus 001 Device 017: ID 0572:1340 Conexant Systems (Rockwell), Inc. USB Modem
But these seems to be hardware modems nonetheless, and they do resport do AT commands:
Welcome to minicom 2.7.1 OPTIONS: I18n Compiled on Jul 22 2021, 00:00:00. Port /dev/ttyACM1, 01:10:34 Press CTRL-A Z for help on special keys at OK ati 56000 OK ati0 56000 OK ati1 OK ati2 OK ati3 CX93001-EIS_V0.2013-V92 OK ati4 OK ati5 B5 OK ati6 OK ati7 OK
There are linux drivers for these modems at linuxant however they're mostly junk and severely outdated.
However AT commands seems fully supported so you might not need any drivers at all.
DSPKOUT wasn't routed on the board so in order to get speaker output: