Disabling VoLTE in MM

[Dylan Van Assche]

Hi,

VoLTE is configurable sometimes but highly depends on the modem how you can do that. High chances you can disable it with custom AT commands from the vendor.

QMI support for IMS/VoLTE is not supported yet in ModemManager.

Kind regards,
Dylan Van Assche


On February 5, 2025 4:42:17 PM UTC, Renat Khalikov <renat_khalikov at trimble.com> wrote:
>Hello ModemManager community,
>
>I am looking for a way to disable VoLTE on my modem using ModemManager. I’m
>running on a custom Yocto-based embedded device and using a data-only SIM
>to establish cellular connections. My setup details are as follows:
>
>*Modem Model/Chipset*: Cinterion PLS83-W
>
>*Operating System/Distribution*: Latest Yocto version 5.2
>
>*ModemManager Version*: 1.22.0
>
>*QMI Tool Version*: 1.34.0
>
>The modem is configured to use QMI
>
>I’m specifically trying to disable VoLTE either via ModemManager commands,
>QMI/MBIM tools, or through configuration. I haven’t found any direct
>documentation about this for my specific modem. Is there a recommended
>approach in ModemManager for disabling VoLTE, or do I need to rely on
>vendor-specific AT commands like: AT^SCFG="MEopMode/IMS" and AT+CEVDP (or
>something else)?
>
>Any insights or suggestions are greatly appreciated. Thank you for your
>help!
>
>Best regards,
>
>Renat Khalikov
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