valid values for lte = LTE(carrier="xxx")?

[poesel]

I'm in Germany and have a hologram card. It should be supporting 'vodafone' & 'telekom' here..
The first doesn't work (not attaching but this may be a different problem). The second gives me wrong carrier.

So what are the valid carriers?

[poesel]

Hello @administrators - this is a quite direct question that should be answerable easy enough if you look in the source code.
Sorry if its in the documentation. Then I have missed it and would be happy about pointers.

Thanks

[Bettina]

Hi Poesel,
You should be asking Hologram please. While we're happy to support on our products, we don't have anything to do with how their service is configured on the SIM cards/their backend. However, we suspect could be because there's no agreements on NB-IoT between them and Vodafone. NB-IoT works differently to CAT-M1. As a Vodafone reseller ourselves, we have had to do a fair amount of integration work. SIMs will be available soon.
Best wishes
Bettina

[rskoniec]

@poesel Do you know if / which technology (NB1/M1) each of your local carrier is using? I assume that you are aware of the fact that you must also have appropriate modem f/w version (NB1/M1) installed on your FiPy/GPy.

[poesel]

Thanks for the answer but now I'm confused. When I create the LTE object how can I get a 'wrong carrier' fault if I'm not yet connected to a network?
This is why I thought that there is a list of valid carriers in the firmware.

[robert-hh]

@poesel To determine the proper carrier, the firmware issues the following command to the modem:
AT+SQNCTM=?
You can do so too. As a side note, I do not specify the carrier at all. When I issue the command, I get the following list:

>>> from network import LTE
>>> lte=LTE()
>>> lte.send_at_cmd("AT+SQNCTM=?")
'\r\n+SQNCTM: ("3gpp-conformance", "ais", "aptg", "att", "bell", "cht", "cta", "dialog", "dish", "docomo", "dtag", "etisalat", "kddi", "kpn", "kt", "lgu", "orange", "singtel", "skt", "softbank", "spark", "standard", "swisscom", "telenor", "telstra", "tmo", "truphone", "turkcell", "verizon", "vodafone")\r\n\r\nOK\r\n'
>>> 

This looks like the list for supported carriers. So there is vodafone and dtag (Deutsche Telekom AG) in the list.

[rskoniec]

@poesel said in valid values for lte = LTE(carrier="xxx")?:

When I create the LTE object how can I get a 'wrong carrier' fault if I'm not yet connected to a network? [...]

According to the docs:

lte.init(*, carrier=None)

This method is used to set up the LTE subsystem. After a deinit() this method can take several seconds to return waiting for the LTE modem to start-up. Optionally specify a carrier name. The available options are: verizon, at&t, standard. standard is generic for any carrier, and it’s also the option used when no arguments are given.

[robert-hh]

@rskoniec Actually the carrier is checked by the code against the list of carriers returned by the AT+SQNCTM=? command (see below).
Edit: I tested that with carrier="dtag". No difference to not specifying the carrier at all.

[poesel]

Thanks all! Question answered.

[Jorge Romero]

Hi @rskoniec @robert-hh, I would like to know if is possible to fix it or maybe if there is something wrong, because when I want to determine the proper carrier on my Fipy, I did not get any response, the list is empty.
The firmware version is LR5.1.1.0-47510 and it is in application mode. Thank you in advance.

>>> from network import LTE
>>> lte=LTE()
>>> lte.send_at_cmd("AT+SQNCTM=?")
''
>>>