Operating system name and version: Ubuntu 14.04.3 LTS
Version of smsd: 3.1.15
Smsd installed from: package repository (smstools)
Name and model of a modem / phone: SIM800L
Interface: USB (Prolific Technology, Inc. PL2303 Serial Port)


I could get smstools working with another modem (Huawei E1750, HSDPA). But now I'm trying a SIM800L module (with a different SIM card) through a serial/USB adapter.

I stop smsd and can send SMS with miniterm.py. But then I start smsd and create an SMS file in outgoing, but I get:

2015-10-20 19:36:50,3, GSM1: Modem is not ready to answer commands (Timeouts: 0)

and in failed:

Fail_reason: Modem initialization failed

loglevel is at the default level 7:

Is there an obvious reason why smsd cannot initialize this modem?