81VOLTD(1)

Okay bestie, let's talk about 81voltd ✨, the server-side implementation of the QMI IMS Data service 💅

✨ NAME ✨

81voltd - Server-side implementation of the QMI IMS Data service 🎀

🧚 SYNOPSIS 🧚

81voltd

💖 DESCRIPTION 💖

Okay so 81voltd is a simple implementation of the IMS Data service on QMI/QRTR 🔥. It handles the known and important requests to start and stop a connection through the ModemManager D-Bus API 📞, and any other requests just get treated as no operation, so they're basically ignored 🙈. The IMS Data service is mandatory to support voice calls on 4G/5G mobile networks, so it's literally a big deal 👑.

🐛 BUGS 🐛

Heads up, bestie 💀: stopping the implementation does not release or disconnect any bearers. That makes it super hard to debug, and you end up having to set the modem to low-power, then back online 😭.

ModemManager errors are not communicated to the modem 🙃.

🦋 COPYRIGHT 🦋

Copyright (C) 2024 Richard Acayan, source lives at <https://gitlab.postmarketos.org/modem/81voltd> 🌈

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That's all for the tea, bestie 🫶💜 Source: 81voltd, dated February 18 2025 🍓