We use a ELS62 with a “1nce”-simcard.
The 1nce simcard is a roaming sim card, so we dont set a operator.
The only parameter we have to set is the apn.
We work with “at+cops=0”. The ELS62 connects in the automatic mode to a telefonica “in germany 26203” cell.
Afterwards we are establishing a transparent socket connection. So far so good. While our application is sending data after a few minutes the ELS62 changes the provider to a telekom cell “in germany 26201” for no reason.
After that the ELS62 no longer take responses to “+++” for leaving the transparent data mode, or “at-commands” to do a reestablish of our socket connection.
After turning the power off and on, the els62 works again.
Do anyone unterstand this behavior?
We are using the following firmware:
ati1
Cinterion
ELS62-W
REVISION 01.200
A-REVISION 01.000.04
OK