<div dir="auto">Great, thanks Daniele. </div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed 11 Dec 2019, 07:51 Daniele Palmas, <<a href="mailto:dnlplm@gmail.com">dnlplm@gmail.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Paul, Il giorno mar 3 dic 2019 alle ore 15:36 Paul Gildea <<a href="mailto:gildeap@tcd.ie" target="_blank" rel="noreferrer">gildeap@tcd.ie</a>> ha scritto: > > Hi Daniele, > > I've tried it with regular carrier and it worked ok. It didn't work for two different brand of private networks/EPC's that we tried here. > the issue has been fixed on the firmware side and will be possibly available in the next release. Thanks, Daniele > -- > Paul > > On Mon, 2 Dec 2019 at 22:31, Daniele Palmas <<a href="mailto:dnlplm@gmail.com" target="_blank" rel="noreferrer">dnlplm@gmail.com</a>> wrote: >> >> Hi all, >> >> Il giorno lun 2 dic 2019 alle ore 17:27 Aleksander Morgado >> <<a href="mailto:aleksander@aleksander.es" target="_blank" rel="noreferrer">aleksander@aleksander.es</a>> ha scritto: >> > >> > Hey! >> > >> > > > Hi, I was wondering had any knowledge of an issue we are seeing. We >> > > > are >> > > > connecting to private networks we are running on two different brands >> > > > of >> > > > EPC. Then, we are using libqmi to query the modem for the network >> > > > info via >> > > > --nas-get-serving-system >> > > >> > > 0A: D4:F2:9C:EE:2C:D3:EF:6F:F9:1A >> > > ^length ^ data >> > > >> > > So length is 10 bytes, but in ASCII "TestNetwork" is 11 bytes long. >> > > Hmm. What do we know packs more than one character into each byte... >> > > >> > > The string is most likely GSM7 encoded and libqmi is expecting all >> > > strings in UTF8, which is what almost everything in QMI is reported as. >> > > >> > > So my best guess is that the Telit modem firmware is not correctly >> > > converting the network name to Unicode for us. Every other QMI >> > > implementation we've seen does :) >> > > >> > > ModemManager has some special code to ignore the description when it's >> > > not UTF-8 safe, and libqmi only does it for printable stuff like what >> > > qmicli outputs. Perhaps it could work around the Telit firmware >> > > somehow. >> > > >> > >> > Other messages, like "Get Home Network" (0x0025), have a special TLV >> > indicating the encoding of the network description with the following >> > supported values: >> > • 0x00 – Octet, unspecified >> > • 0x02 – 7-bit ASCII >> > • 0x04 – Unicode >> > • 0x09 – GSM 7-bit default >> > >> > I don't know of any such TLV in "Get Serving System", but maybe >> > there's a new one we don't know of. There isn't any unknown one in the >> > provided message as far as I can see. >> > >> > As Dan said, ModemManager has UTF-8 validity checks before using the >> > strings, but the printable TLV descriptions in libqmi and the qmicli >> > output lack that logic. >> > >> > @Daniele Palmas @Carlo Lobrano do you know if this is a Telit specific >> > issue or a more generic one? Is the firmware preferring the GSM-7 >> > output for this field over Unicode when the characters fit in GSM-7? >> > >> >> let me check this, it will take a few days. >> >> @Paul, is this happening only with your test network or also with >> normal carriers? I'm not seeing the issue in normal usage. >> >> Regards, >> Daniele >> >> > -- >> > Aleksander >> > <a href="https://aleksander.es" rel="noreferrer noreferrer" target="_blank">https://aleksander.es</a> </blockquote></div>