4G LTE modem with Data and Voice communication using RJ45 Ethernet for raspberry pi 5

[HR369]

Dear All,

I want to use a 4 G LTE modem for internet data connection along with voice phone call communication using RJ45 ethernet connection for Raspberry pi 5 SBC board, Kindly suggest any opensource modem or any evaluation board.

Even i am ready to design my own PCB design, If anyone knows schematic for the same. Kindly share for reference.

 

[kaz1]

I have heard of "usrp b205mini". This is SDR transceivers that I know some designers use it as test platform for LTE...etc

Demodulation of the LTE uplink – Daniel Estévez

destevez.net

You still need to get baseband to interface from SDR to ethernet.

 

[HR369]

I have heard of "usrp b205mini". This is SDR transceivers that I know some designers use it as test platform for LTE...etc

Demodulation of the LTE uplink – Daniel Estévez

destevez.net

You still need to get baseband to interface from SDR to ethernet.

Thank you for the inputs, Yes! you are right. I should have a interface with SDR to ethernet. This USRP b205mini won't suit my requirement.

 

[FvM]

I'm not aware of voice/data modems with ethernet interface. There's either modem with USB/UART and voice or LTE router with ethernet.
How do you want to use voice?

 

[HR369]

I'm not aware of voice/data modems with ethernet interface. There's either modem with USB/UART and voice or LTE router with ethernet.
How do you want to use voice?

Please refer block diagram for working requirement.

This is my proposal for your information.
Where DC power supply should be 5V DC or 12V DC but need communication for 3.3V DC.

Hope this will give more clarity DATA - internet, VOICE - Phone call through AT commands

 

[kaz1]

So your mic/speaker signals are analogue. Where is ofdm of 4G in your design?

 

[FvM]

Clear so far, however I don't know about 4G or 5G modem with ethernet. Raspberry pi 5 can also use USB, isn't it? Much more common for LTE modems.