Re: [lwip-users] Problem with PPPoS connection cellular SIM800 with only one cell operator

[Артём Скворцов]

Sylvain, thanks! Yes, LwIp is perfect!

Finally I suppose that the cell operator rejects the PPP connection because of its internal reasons.

But the internal IP stack of SIM800 module works fine!

чт, 23 янв. 2020 г. в 18:56, Sylvain Rochet <address@hidden>:

Hi Артём,

On Sun, Dec 29, 2019 at 08:00:15PM +0300, Артём Скворцов wrote:
> The PPP can't be established with only one cell operator 'beeline'.
> This sim card works ok with embedded SIM800 TCP/IP AT commands.
> All other operators in Russia (Megafon, MTS) works ok both with LwIp PPPoS
> and embedded AT.
> But only 'beeline' rejects the connection.
> I tried to change authentication to PAP, also change APN setting to empty
> and other.
> Nothing changes.
> Here are the log:

For this kind of issue, since lwIP is working perfectly fine here, and
unless someone on the list had the same issue, we can't do much.

I'm afraid you will have to ask your chip manufacturer to get some help
on this case. GOOD LUCK.

Sylvain
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Skvortsov Artyom