Asterisk

• Hard config syntax
• no straight forward way of using env variables for config
• Docs
• Das Asterisk Buch

Config

• Handling secrets in config files

Playback

• Playback()
• Asterisk cmd Playback
• Asterisk Audio Formats Explained
• Convert Audio Files for Asterisk
• .wav was distorted, .g722 worked

ffmpeg -i music.mp3 -ar 16000 -ac 1 -c:a g722 music.g722

Commands

Send commant to asterisk running in container:

podman exec -it podman-asterisk_asterisk_1 asterisk -rx "dialplan reload"

Commands:

• dialplan reload: Reload extensions.conf
• core show channels: Show (active) channels and calls

Web frontends

• FreePBX

Issues

• res_pjsip "There are no local system nameservers configured, resorting to system resolution"
  • Alpine Linux asterisk container: patch asterisk dns resolver