Hello,
We are using EC25-E, firmware revision EC25EFAR08A02M4G on a custom board with a Yocto Linux on it.
Problem we have is sometimes when we call the phone number of the inserted SIM, we hear ringing (on the phone side), we issue ‘mmcli -m 0 --voice-list-calls’ to see that there is an incoming (ringing in) present. Then we send the command with “mmcli -m 0 --command AT+CLCC” and normally the calling number will be in the response, but sometimes the number is not there.
Example in attachment.
Currently using an Austrian A1 card in roaming with various German operators.
1 - Any idea why this is happening or what the problem is?
2 - Is the problem potentially due to using modem manager rather than direct commands to the device?
3 - Do you recommend an alternate approach or some alternate commands to be used as a method of obtaining ringing events?
Thanks!