[srslte-users] UE attached but without IP

[Pedro Alvarez]

Eduardo,

The problem does not seem to be in the OP/OPc, AMF, etc., since the
phone accepts the authentication/security-mode-command.

The problem seems to be in the APN settings. You are replying to ESM
information request with the APN name == "ims".
Can you try to see why you are sending "ims" as the APN name? Any
setting on the phone to disable IMS?

You do not need to set apnuser/apnpass.

Regards,
Pedro

On Thu, Feb 7, 2019 at 12:55 PM Eduardo Garro Crevillen
<edgarcre at iteam.upv.es> wrote:
>
> Hello Pedro,
>
> We have checked that the same apn configuration (apn = srsapn) is in
> both, the epc.conf and in Bittium. We don't know if we need to
> configure something else, e.g. apnuser/apnpass. Since these fields are
> not defined in epc.conf, we have left blank in our mobile. May be the
> problem caused because of a bad USIM <-> user_db.csv configuration? We
> have been reading previous question were an AMF = 8000 was
> recommended, but we are using 9001. In addition, another comment was
> that milenage algorithm is not supported for opc in previous srsLTE
> releases.
>
> Kind regards, Eduardo.
>
> PS: In case it helps, we have succusfully connected with a virtual
> srsUE (ue.conf), but Bittium is not able to connect.
>
> Pedro Alvarez <pedro.alvarez at softwareradiosystems.com> escribió:
>
> > Can you double check if the APN configuration matches in the EPC and the UE?
> >
> > On Thu, Feb 7, 2019 at 10:59 AM Eduardo Garro Crevillen
> > <edgarcre at iteam.upv.es> wrote:
> >>
> >>
> >> Hello everyone,
> >>
> >> We have just started trying to implement the srsLTE suite. We are
> >> using the srsepc, the srsenb which is connected to a USRP B210 and
> >> a sysmocom USIM inside a Bittium phone as UE. However, although it
> >> seems that the UE is correctly attached, it does not get any IP
> >> address. In the attachment you can find the .log and .pcap files.
> >> Taking a look to the epc.log it seems that there is an error in the
> >> NAS authentication protocol. We have thought that there was a
> >> problem with the USIM data. However, we have checked several times
> >> that the IMSI, OPC and K are correctly included within the
> >> ue_db.csv. This the included line:
> >>
> >> ue4,901700000000004,99728e5d250001ba5f322c82d002db86,opc,b8993ca66ce802c03a2c16d237e90cd1,9001,0000000012fa,7
> >>
> >> Maybe there is an error regarding the SQN or the QCI? Since we have
> >> not found any message on the mailing list archives talking about
> >> these problem, we kindly ask for your help.
> >>
> >> Kind regards, Eduardo
> >>
> >> -----------------------------------------
> >>   Eduardo Garro Crevillén, R&D Engineer
> >>   Universitat Politècnica de València
> >>   iTEAM Research Institute
> >>   Mobile Communications Group
> >> -----------------------------------------
> >> _______________________________________________
> >> srslte-users mailing list
> >> srslte-users at lists.softwareradiosystems.com
> >> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>
>
>
> -----------------------------------------
>    Eduardo Garro Crevillén, R&D Engineer
>    Universitat Politècnica de València
>    iTEAM Research Institute
>    Mobile Communications Group
> -----------------------------------------