Asterisk on Debian 12 / Bookworm

Debian 12 doesn't come with Asterisk. You can however use the Asterisk from Debian 11 / Bullseye;

• asterisk-config
• asterisk-core-sounds-en
  dep: asterisk-core-sounds-en-gsm
  or asterisk-core-sounds-en-g722
  or asterisk-core-sounds-en-wav.
• asterisk-modules
• sug: asterisk-doc

Besides the Asterisk packages you need the following packages from Debian 11;

• libldap.4-2
• libssl1.1

The rest comes from Debian 12;

• libcrypt1
• libedit2
• libgcc-s1
• libgnutls30
• libjansson4
• libpopt0
• libsasl2-2
• libsqlite3-0
• liburiparser1
• libuuid1
• libxml2
• libxslt1.1

You need to install libgnutls30 and libsasl2-2 from Debian 12 before you install libldap.4-2 and libssl1.1 from Debian 11!