Operating system name and version: Debian
Version of smsd: 3.1.14
Smsd installed from: sources
Name and model of a modem / phone: Huawei E160E
Interface: USB

How can I change the filename of the SMS in the incoming directory?

I would like it to be like: "date_hour_from_XXXXXX" not "GSM1.XXXXXX"

I have lost my way in the source:(