FiPy, NB-IoT, 1nce/ Telekom.de germany: fails, no band 8 support?

[robert-hh]

@bqpd That is a short script which works:

#
from network import LTE
import time

lte = LTE()
lte.attach(band=8, apn="iot.1nce.net")
while not lte.isattached():
    time.sleep(0.5)
    print(".", end="")

print("\nAttached!")

print(lte.send_at_cmd("AT+CSQ"))

lte.connect()       # start a data session and obtain an IP address
while not lte.isconnected():
    time.sleep(0.5)
    print("-", end="")

print("Connected!")

The value returned by AT+CSQ is 25,99, which indicated a good reception. As antenna I use a quarter-wavelength 868 MHz antenna, which I tested to work well enough up to the LTE band 8 frequency. The Pycom Lora antenna should be fine too.

[bqpd]

@robert-hh Thanks a lot! I will test it soon. Maybe i should also try it in a larger city to minimize the risk of net availability issues.

[Andy_N.]

@robert-hh
today i was able to try this script. I updatetd the firmware to MicroPython 1.20.0.rc1 and the sequans firmware updatetd with "upgdiff_33080-to-40343.dup" on my GPy successfully.
I inserted the 1nce SIM and tried your script with connected pycom LTE-antenna via Atom shell in Munich.

Unfortunately i wasnt able to attach... i tried several times, each for 45 min but nothing happend.

Any idea what can be wrong? What else i can try?

Thanks

[robert-hh]

@andy_n I do not recall if you have a FiPy module refurbished by PyCom for BAND=8 support. If not, the software may accept the setting, but it will simply not work. You can query the list of supported bands with:
from network import LTE

lte = LTE()
lte.send_at_command('at!="RRC:showcaps"')

It should return something like:

== CAPS config =============================
  .Lock UE on SRV band    : false
  .MFBI support           : true
  .TM8 TDD support        : false
============================================
== CAPS ====================================
  . access stratum: R13
  . catM          : 1
  . nb-IoT        : 1
-- EUTRA bands --
  . supported     : 28/20/13/12/8/5/4/3
  . board         : 3/4/5/8/12/13/20/28
  . admin         : 
  . pending admin : 
-- EUTRA carriers --
  . admin         : 
  . pending admin : 
============================================
OK

[Joop Susan]

@robert-hh Showcaps does not work for me.

>>> from network import LTE
>>> lte = LTE()
>>> lte.send_at_cmd('at!="RRC:showcaps"')
'\r\nNo permission to use the RRC private debug CLI\r\n\r\nOK\r\n'
>>> 

I also have the problem that I can't connect on band 8 on an upgraded GPy.

What other way is there to see if the firmware supports band 8?

See: T-Mobile NB-IoT in the Netherlands?

[Joop Susan]

Found solution for showcaps rejection from another thread.

>>> from network import LTE
>>> lte = LTE()
>>> print(lte.send_at_cmd('AT!="RRC:setDbgPerm full"'))
OK
>>> print(lte.send_at_cmd('at!="RRC:showcaps"'))
== CAPS config =============================
  .Lock UE on SRV band    : false
  .MFBI support           : true
  .TM8 TDD support        : false
============================================
== CAPS ====================================
  . access stratum: R13
  . catM          : 1
  . nb-IoT        : 1
-- EUTRA bands --
  . supported     : 28/20/13/12/4/3
  . board         : 3/4/12/13/20/28
  . admin         : 
  . pending admin : 
-- EUTRA carriers --
  . admin         : 
  . pending admin : 
============================================
OK
>>> 

So this means that this one needs to be RMA'ed?

[robert-hh]

@joop-susan Yes.

[tvetter1976]

I am lucky to have:

>>> print(lte.send_at_cmd('at!="RRC:showcaps"'))

== CAPS config =============================
  .Lock UE on SRV band    : false
  .MFBI support           : true
  .TM8 TDD support        : false
============================================
== CAPS ====================================
  . access stratum: R13
  . catM          : 1
  . nb-IoT        : 1
-- EUTRA bands --
  . supported     : 28/20/13/12/8/5/4/3
  . board         : 3/4/5/8/12/13/20/28
  . admin         :
  . pending admin :
-- EUTRA carriers --
  . admin         :
  . pending admin :
============================================```

And I can confirm that it works without any SimCard inserted!

[Andy_N.]

@joop-susan
here the same problem, but your code worked.

>>> from network import LTE
>>> lte = LTE()
>>> print(lte.send_at_cmd('AT!="RRC:setDbgPerm full"'))
OK
>>>  print(lte.send_at_cmd('at!="RRC:showcaps"'))
Traceback (most recent call last):
  File "<stdin>", line 1
IndentationError: unexpected indent
>>> print(lte.send_at_cmd('at!="RRC:showcaps"'))

== CAPS config =============================
  .Lock UE on SRV band    : false
  .MFBI support           : true
  .TM8 TDD support        : false
============================================
== CAPS ====================================
  . access stratum: R13
  . catM          : 1
  . nb-IoT        : 1
-- EUTRA bands --
  . supported     : 28/20/13/12/4/3
  . board         : 3/4/12/13/20/28
  . admin         :
  . pending admin :
-- EUTRA carriers --
  . admin         :
  . pending admin :
============================================

OK

ok so there is no band 8 in the supported line...
i also need to send the boards back to geht upgraded ones...
Thanks a lot!

[tvetter1976]

@robert-hh
Can you give an example how to send data using 1nce sim card?