• OS: Raspbian GNU/Linux 10 (buster)
• Gammu-smsd version 1.40.0 installed with apt-get install
• UMTS-Stick Huawei E173

Hi,
every time I successfully send the first SMS with echo "test" | sudo gammu-smsd-inject TEXT number the
/dev/serial/by-id/usb-HUAWEI_Technology_HUAWEI_Mobile-if00-port0 toggles between ttyUSB0 and ttyUSB1

That means if I want to send a second SMS I had to change the port = parameter

• I tried to set port = /dev/serial/by-id/usb-HUAWEI_Technology_HUAWEI_Mobile-if00-port0 but I always have to restart the gammu-smsd.service after sending an SMS that the new correct ttyUSB is sourced.

Can anyone help me to disable the toogle the ttyUSB or how gammu-smsd can auto reload it after every SMS ?

Here is my gammu-smsdrc config File:

# Gammu library configuration, see gammurc(5)
[gammu]
# Please configure this!
port = /dev/serial/by-id/usb-HUAWEI_Technology_HUAWEI_Mobile-if00-port0
connection = at
# Debugging
logformat = textalldate
# SMSD configuration, see gammu-smsdrc(5)
[smsd]
pin = xxxx
NetworkCode = xxxxxxxxx
service = files
#logfile = syslog
logfile = /var/log/gammu-smsd
# Increase for debugging information
debuglevel = 4
ReceiveFrequency = 300
# Paths where messages are stored
inboxpath = /var/spool/gammu/inbox/
outboxpath = /var/spool/gammu/outbox/
sentsmspath = /var/spool/gammu/sent/
errorsmspath = /var/spool/gammu/error/
CheckSecurity = 0