Cinterion connection reliability | Telit Cinterion IoT Developer Community
April 9, 2014 - 3:30pm, 12348 views
I am currently involved in the creation of an alert notification system that uses cinterion mc55i based modems (siemens TC35i and a newer cinterion that is also mc55i based). Have noticed some strange behaviours happening on site at our client, and I'm hoping someone can maybe explain what is happening. First thing I noticed is that the modems are losing their GSM network registration (CREG=0,2 or 0,3 instead of 0,1) after periods of inactivity. The thing that worries me is that the modem is not able to recover from this without a software reset (CFUN,1,1). We suspect the provider has some sort of rule in place bouncing inactive connections from it's network, but it's difficult to find someone who will be able to confirm or deny this at the provider. Second thing is that I sometimes run into something that looks like memory issues, where the modem is no longer able to send SMS messages, when this happens I see that it still responds to received messages, but their contents are garbled or empty. Managed to recover from this state manually by triggering a wipe of all memory, but it should not be possible for memory to run out because we only send with CGMS, and delete all incoming messages immediately after reading them. Any help on any of the 2 mentioned issues would be most welcome because this issue is a potentially blocking issue for the further commissioning of our project. Thanks in advance! Regards, Ivan
do you have any news? AT command log with timestamps since power-up as proposed by JEDRZEJ sounds good!
This thread is quite old so probably there will be no update.
But this log was to see how the user application interacts with the module and to diagnose the particular problem.
Hi ,I have the same issues with ESH5
How can it be solved?
What exactly issue do you have. Can you provide more details? Did you tried to use another mobile network operators sim card? Hence there is no update it is hard to diagnose what happend.
Hi, We are using Gemalto EHS6T modem and it is required to update the firmware 03.001. Where to download it? Please advise. Thanks