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Self-hosted VoIP? (mander.xyz)

submitted 8 months ago by [email protected] to c/[email protected]

20 comments fedilink hide all child comments

I would like to use a SIM7600X 4G Expansion Board (like this one) to connect my raspberry pi to the mobile network.

In this raspberry pi I am also running an XMPP server.

I want to then create an account that will bridge SMS messages between the SIM7600 and my XMPP account (should be easy), and ideally it should also be able to bridge phone calls (might be difficult?).

I know about the XMPP-VoIP JMP.chat, and since they are open source I can get some inspiration from them.

I will try to implement something myself, but I am not an amazing programmer. So I am wondering whether there is already some open source project that is more tailored for this application.

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[–] [email protected] 2 points 8 months ago* (last edited 8 months ago) (2 children)

Very strange line from specs.
USB Driver Windows XP/7/8/10/11, Linux (driver free on Raspberry Pi Raspbian system)
Does it mean binary blob driver only? and you need to pay for it to use it on PC?

[–] [email protected] 1 points 7 months ago* (last edited 7 months ago)

Yeah, it is written funny. But what it means is that the Linux kernel already comes pre-packaged with the drivers necessary to communicate using the protocol used by this device (UART or USB). These Linux drivers (and by extension Raspbian) are natively capable of interfacing via the GPIO pins or via the USB connectors. It is not true that the device is "driver free" as you always need a driver for this, what they meant is that it is not necessary to install any additional drivers for Linux. So "free from installation" I suppose.

Windows does not come pre-packaged with these drivers, so you need to install them if you want to interface with the device via USB. The chip that the board uses for the UART -> USB conversion is the CP2102. This chip is a common chip used in some ESP32 boards, and I think it would work fine with the standard CP210x driver. But on their site they do provide a specific driver for free (SIMCOM_Windows_USB_Drivers_V1.0.2.exe)

[–] [email protected] 2 points 8 months ago

I think it means that on Linux, no driver is needed ("driver-free" = free of drivers) since it uses the kernel USB stack. On windows there may be a USB driver that gets loaded. But you're right, it's ambiguous.