Operating system name and version: Linux Debian 11
Version of smsd: 3.1.21
Smsd installed from: package repository
Name and model of a modem / phone: SIMCom SIM7600G-H-PCIE
Interface: USB internal to Modem-Adapter


i need some help to make a voicecall.
The call must last at least 30 seconds and work with both locked and unlocked phone.
The current config only works on my phone and locked phone/screen.

Phone: Poco F3
Provider: freenet / Telekom

Here my config:

To: 0(placeholder)
Alphabet: UTF8
Voicecall: 1
To_TOA: Unknown

TONE:30 30 *,*,*,*,*,*,*,*,*,*

The last part (TONE:30 30 *,*,*,*,*,*,*,*,*,*) just works with my phone and provider.
it rings for over a minute when the screen is locked. but when it is unlocked it rings only 2 seconds
What do i have to change so that it works with every cell phone, provider and rings for over 30 seconds no matter the screen/phone is locked or unlocked?!

or what have I done wrong? :(