Basic

interfaceVLANipgateway
e0500192.168.50.10/24192.168.50.254
hostnamectl hostname sip-cod.cod.ssa2026.region
timedatectl set-timezone Asia/Yekaterinburg

/etc/systemd/timesyncd.conf

[Time]
NTP=srv1-cod.cod.ssa2026.region 

Asterisk

apt install asterisk