Operating system name and version: CentOS 7
Version of smsd: 3.1.21
Smsd installed from: http://smstools3.kekekasvi.com/packages/smstools3-3.1.21.tar.gz
Name and model of a modem / phone: Modem Huawei E61
Interface: USB

Always showing 'Permission denied error for /dev/ttyUSB0' . Applied chmod 777 for /dev/tty* . Still error exists.

Can anyone help me to resolve this issue?

Thanks
Vijesh