Asterisk on Debian 12 / Bookworm

Debian 12 doesn't come with Asterisk.

From Debian 11 / Bullseye

You could use 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-2.4-2
• 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-2.4-2 and libssl1.1 from Debian 11!

Newer

Alternatively you could build a backport from Sid / Unstable or compile from source downloaded from the Asterisk site.
I'm currently experimenting with a Debian 12 AMD64 backport. That's an upgrade from Asterisk 16.11.0 to 22.8.2!

Debian 13 / Trixie

In Debian 13, libgnutls30 is replaced by libgnutls30t64. As far as I can tell these are incompatible.
From the libgnutls30t64 control file;

Breaks: libgnutls30 (<< 3.8.9-3+deb13u1)
Replaces: libgnutls30
Provides: libgnutls30 (= 3.8.9-3+deb13u1)

So you need to build a backport from Sid / Unstable or compile from source downloaded from the Asterisk site.
I'm hoping to make a Debian 13 AMD64 backport available at some point.