Hi,

I understand that without the extension cable, you see the P1 smart meter protocol.
So let' s focus on the extension cable.

You cannot assume that the smart meter cable cannot be extended.

Check your extension cable, regarding the following:
1. Is the RJ-11/12 extension cable a straight ...

First.
Since, at least, 2017, the Landis & Gyr E350 supports DSMR 5. So maybe you have to change your config file to dsmr_version: 5.

Second.

You said
(I extended the RJ-11)

This is a serial cable and you cannot extend this cable unlimited.
The RS-232 standard has been specified in 1960.The ...

Hello Everyone! hopefully anyone is able to help me with a issue I am having with reading out my smart meter.
I own a Landis E350 with a smart meter cable from https://www.sossolutions.nl/slimme-meter-kabell its a verified cable for my smart meter. It is connected to my ESXI server in the basement ...