Thanks, so can you tell us about the reason of this error? Is this error is related to "Activate PDP Context Accept" and its parameters or something else?

On Friday, March 26, 2021, Harald Welte <laforge@osmocom.org> wrote:

Hi,

On Fri, Mar 26, 2021 at 07:49:37PM +0430, morteza ali Ahmadi wrote:
> In order to have an internet connection in UE, we have run OsmoGGSN project
> to set up GGSN. Also, SGSN is developed in our system.

So you are seeing a problem between your custom, non open source SGSN and the UE,
but you ask here on the Osmocom list for assistance? If I'm correct, then
the following holds true: As we don't have access to your
custom SGSN, only you can investigate and resolve that ;)

--
- Harald Welte <laforge@osmocom.org> http://laforge.gnumonks.org/
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