eUICC support - GSMA RSP M2M

RE: eUICC support - GSMA RSP M2M

Håkon Alseth — Wed, 05 Oct 2022 07:50:10 GMT

Hi,

You are replying to a case that is >2 years old. I would recommend that you create a new case, and please include details on which carrier you're connecting to.

Kind regards,

Håkon

RE: eUICC support - GSMA RSP M2M

Holger Lamm — Tue, 04 Oct 2022 12:41:06 GMT

Today I tried this with my eSIM provider.
He started the process, but got no reply from my device.

the operator said he could send me the commands via SMS and it seems to be processed in principle (an "assess device" SMS was immediately replied to), but for the M2M provisioning SMS the device failed to open the BIP channel.

There are 2 unusual messages I got during the process in the LTE Link monitor:

- +CNEC_ESM: 33,1 described as "Requested service option not subscribed" by the Link monitor;

- +CGEV: RESTR 2,2 described as "Unknown action: RESTR" by the Link monitor, but described as "Requested procedure restricted (Throttling, Temporary)" in the AT command documentation.

Is there something I have done wrong, or have to activate?

RE: eUICC support - GSMA RSP M2M

Håkon Alseth — Tue, 19 May 2020 06:28:55 GMT

Hi,

[quote user="seludeft"]If we have multiple "UICC Profiles" installed in the eSIM (eUICC) ... do we use the AT+CRSM & AT+CSIM command to "switch" between "UICC Profiles"? ... or maybe with AT%XUSIMLCK ? Or another AT_CMD?[/quote]

The first two is highly likely the one's you'll use. If you have multiple profiles, it isn't unusual that a SIM can store more than one profile.

XUSIMLCK locks towards a specific SIM card:

The set command allows locking the modem to work with predefined USIM cards. 
Using the command, the modem can be personalized, depersonalized, or the lock of a category can be disabled if the category is not depersonalized.

It is also possible to conﬁgure USIM personalization so that the device is locked to the ﬁrst USIM that is inserted to it.

This command isn't aimed towards initial configuration of a SIM on the level that you are looking for. If you want to lock a device to a specific SIM, you can use this AT command do to that.

[quote user="seludeft"]BTW, for anyone else reading this tread .... go and read this whitepaper: GSMA - eSim Whitepaper - The what and how to Remote SIM Provisioning[/quote]

Thank you for sharing! This one is very informative, I'll be sure to read this :)

Kind regards,

Håkon

RE: eUICC support - GSMA RSP M2M

seludeft — Thu, 14 May 2020 10:45:00 GMT

Rossen BTW have you read this whitepaper: GSMA - eSim Whitepaper - The what and how to Remote SIM Provisioning ?

RE: eUICC support - GSMA RSP M2M

seludeft — Thu, 14 May 2020 10:37:32 GMT

[quote userid="2115" url="~/f/nordic-q-a/61092/euicc-support---gsma-rsp-m2m/249898"]All communication is over the Sim Card interface.[/quote]

Great, then we don't have to "do anything more" :-)

[quote userid="2115" url="~/f/nordic-q-a/61092/euicc-support---gsma-rsp-m2m/249898"]

Assuming consumer (not M2M eUICC), you access the SIM directly via the appropriate AT commands:

https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/crsm.html?cp=2_1_3_8

https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/csim.html?cp=2_1_3_9

[/quote]

Thanks! We were looking at them, but were not sure ... now we are 👍🏻

If we have multiple "UICC Profiles" installed in the eSIM (eUICC) ... do we use the AT+CRSM & AT+CSIM command to "switch" between "UICC Profiles"? ... or maybe with AT%XUSIMLCK ? Or another AT_CMD?

[Yeah Lets assume the slide says : From SIM Card to eSIM (Costomer) with Remote Provisioning ]

[quote userid="2115" url="~/f/nordic-q-a/61092/euicc-support---gsma-rsp-m2m/249898"]I would recommend that you contact the eUICC provider to get details on how you should reprogram the specific eUICC using the standardized SIM communication channels that we provide.[/quote]

Of course! as one should always do 😉 ... but right now, we would like to understand how it all connects, how "They" have thought up the solution to work (and it's becoming clearer and clearer 🙃)

BTW, for anyone else reading this tread .... go and read this whitepaper: GSMA - eSim Whitepaper - The what and how to Remote SIM Provisioning

RE: eUICC support - GSMA RSP M2M

Håkon Alseth — Thu, 14 May 2020 10:06:42 GMT

Hi,

[quote user="seludeft"]How do we add / re-program the eUICC chip?[/quote]

All communication is over the Sim Card interface.

Assuming consumer (not M2M eUICC), you access the SIM directly via the appropriate AT commands:

https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/crsm.html?cp=2_1_3_8

https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/mob_termination_ctrl_status/csim.html?cp=2_1_3_9

I would recommend that you contact the eUICC provider to get details on how you should reprogram the specific eUICC using the standardized SIM communication channels that we provide.

Kind regards,

Håkon

RE: eUICC support - GSMA RSP M2M

Rossen — Thu, 14 May 2020 10:02:29 GMT

So basically as long as we have a removable eUICC and a data session we should be able to download a new profile and trigger the enable and refresh command.

RE: eUICC support - GSMA RSP M2M

seludeft — Thu, 14 May 2020 09:21:20 GMT

From this video: https://youtu.be/Gs6rJlz4neQ?t=253

It depends on what type of eSIM one has ... "Costumer eSIM on eUICC" vs "M2M eSIM on eUICC" ... that is, who has the "full rights" to update the UICC Profiles on the eSIM.

Let's say we have a "Costumer" grade eSIM ... and we have in our Application made sure to connect to LTE and downloaded our new UICC Profile ...

How do we add / re-program the eUICC chip?

Do we need to connect our eUICC to the nRF9160 to a "special pin(s)"? ...

or the nRF9160 can do the update through the "Sim Card Interface"?

RE: eUICC support - GSMA RSP M2M

Håkon Alseth — Fri, 08 May 2020 09:56:46 GMT

Hi,

That shall be supported.

If LPA is on eUICC the modem simply provides TCP socket for USAT BIP connection for transferring the profile. Also the SIM REFRESH procedure is supported for changing the profile.

Kind regards,

Håkon

RE: eUICC support - GSMA RSP M2M

Rossen — Fri, 08 May 2020 09:44:56 GMT

Normally from the M2M eSIM management platform we will trigger an SMS based on which the device should open an HTTP channel via which the new eSIM profile should be downloaded.

Will the Thingy be able to process an SMS and initiated an HTTP session?

RE: eUICC support - GSMA RSP M2M

Håkon Alseth — Fri, 08 May 2020 09:32:54 GMT

Hi,

It is possible, but I would recommend that you contact your eUICC provider to ask how it should be performed.

If local profile assistance (LPA) is located on application domain, modem provides AT commands for generic and restricted UICC access. Application shall setup own logical channel, manage and communicate with required application(s) on eUICC via that channel. I would recommend that you contact your eUICC provider and ask specifically what is required to download the new profile.

Kind regards,

Håkon