Is it possible to make a voice call (VoLTE) over a 4G USB modem?
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Is it possible to make a voice call (VoLTE) using a standard USB-connected (i.e. USB Type-A) 4G / LTE modem / dongle? I am taking about devices such as the [D-Link DWM-222](https://www.dlink.com/uk/en/products/dwm-222-4g-lte-usb-adapter) or the ZTE MF833, for example. As 3G is being switched off in my area, I need this to *really* use VoLTE instead of using "Circuit-switch fallback" (CSFB) to drop back to 3G. I already understand that I will need a sim card capable of "IMS registration".
I have found many "similar" question already posted on stackexchange, but they all refer to UMTS (3G) devices.
I am aware that boards based on the A7672S can do this, as there is a page and video demonstrating this [here](https://www.engineersgarage.com/a7672-4g-modem-at-command-testing/) .
If anyone out there has succeeded in making a VoLTE voice call using a 4G usb-connected modem, preferably from the command line, could you please let me know what model dongle you used? Thank you!
As requested in the comments, I am now adding that I would like to be able to make this voice call using any recent Debian Linux (Bookworm, Bullseye or Buster).
Also, I do *not* consider this question to be a "request for tutorial". I would simply like to know if anyone out there has succeeded in doing this and if so, what hardware was used. As I am asking a question about ["Using a *nix desktop"](https://unix.stackexchange.com/help/on-topic) , I consider this question to be on-topic.
Asked by jaimet
(456 rep)
Mar 13, 2025, 12:57 PM
Last activity: Mar 16, 2025, 10:47 AM
Last activity: Mar 16, 2025, 10:47 AM