Please note that this is done by a small bash script, and the initial state in this script is "Unknown".
Now... the problem is, that when the SIM card seems not to be registered on a network, I can actually accept calls, receive SMS and send SMS messages!
Why is that so?
Is it possible that GSM registration status is somehow flipping between 2G and 3G/HDSPA network and that SIM card looses connection to 3G, but it is still connected to 2G, however chan_dongle does not register this?
Any idea and/or solution?
Last edit: Matej Kovacic 2022-08-17
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I am using Huawei E1752C USB dongle (identified as model E1752 by chan_dongle.
I am running command
dongle show device state dongle0
from cron and here are some interesting results (I grep "GSM Registration Status"):Please note that this is done by a small bash script, and the initial state in this script is "Unknown".
Now... the problem is, that when the SIM card seems not to be registered on a network, I can actually accept calls, receive SMS and send SMS messages!
Why is that so?
Is it possible that GSM registration status is somehow flipping between 2G and 3G/HDSPA network and that SIM card looses connection to 3G, but it is still connected to 2G, however chan_dongle does not register this?
Any idea and/or solution?
Last edit: Matej Kovacic 2022-08-17