I received another response from the beeloggers, and perhaps there are more things that could be checked before finally excluding the possibility to make the E-H work.
For the test sketch there are two versions. One is an older HTTP-variant and the other is the SSL-Sketch.
Before this thread was opened I had tried both of them.
The monitor output from the HTTP-test was the following:
LTE HTTP Test_Monitor_Output.pdf (63,7 KB)
In this output you find the error message:
</title></head><body><h1>302 Found</h1><p>The document has moved <a href="http://pass.telekom.de/">here</a></p></body></html>
Opening pass.telekom.de provides additional information.
Assuming you speak German I just quote the analysis from beelogger:
Sieht für mich so aus, als ob der SIM7600-H von der Telekom geblockt wird oder Parameter beim Verbindungsaufbau, z.B. TDD/FDD Band, nicht stimmen.
Die Info zum SIM7600E-H auf der Herstellerseite sagt, dass dieser für die EU/Korea/Thailand vorgesehen ist.
Aus meiner Sicht gilt es nach wie vor herauszufinden, wie ein SIM7600E-H auf die EU-Technologie parametriert wird.
Do you think it could be worth following this lead? If yes, how would I have to approach this?
Eventually the end of the story line would be the point, where I cannot make the system run through adjustments on my side, but where beelogger would have to change things on their end which of course would be asked too much.