Version of smsd: 3.1.14
Smsd installed from: package repository
Name and model of a modem / phone: Huawei E3276
Modem fails to register with the mobile network. smsd_trouble.log shows:
And so on for 100 times, after which smsd_status shows blocked. When testing with another Ubuntu 12.04 server a day earlier with the same conf, everything worked fine.
Where should I look for the cause?