# uname -sr
FreeBSD 12.2-RELEASE
# pkg info | grep asterisk
asterisk18-18.8.0_1            Open Source PBX and telephony toolkit

# cd /usr/ports/net/asterisk18
# make install clean

[ ] ASTVERSION        Install astversion (requires bash)
[x] BACKTRACE         Stack backtrace support via (lib)execinfo
[ ] CURL              Data transfer support via cURL
[ ] DAHDI             DAHDI support
[ ] EXCHANGE          Exchange calendar support
[ ] FREETDS           FreeTDS library support
[ ] G729              Install G.729 format sounds for Music-on-Hold (MoH)
[ ] LDAP              LDAP protocol support
[ ] LUA               Lua scripting language support
[ ] MACRO             Enable app_macro (deprecated)
[x] MP3PLAYER         Install MP3 Player for Music-On-Hold (mpg123)
[ ] OOH323            ooh323 support
[x] OPTIMIZED_CFLAGS  Use extra compiler optimizations
[x] PJSIP             Build the PJSIP based SIP channel
[ ] PORTAUDIO         PortAudio library support
[ ] RADIUS            RADIUS protocol support
[x] SNMP              SNMP network protocol support
[ ] SPANDSP           SpanDSP faxing support
[ ] SRTP              SecureRTP support
[ ] SYSINFO           Use devel/libsysinfo to get system information
[ ] URIPARSER         Use RFC 3986 compliant uriparser library
[ ] XMLDOC            Build and install XML documentation
[ ] XMPP              XMPP/GTALK support
───────────────────── Encoder/Decoder (Codec) Support ────────────────────
[x] GSM               GSM codec support
[ ] NEWG711           New G711 Codec
[ ] OPUS              Opus Codec
[x] SPEEX             Speex audio format support
[x] VORBIS            Ogg Vorbis audio codec support
───────────────────────────── Database Support ───────────────────────────
[x] MYSQL             MySQL database support
[ ] ODBC              ODBC database backend
[ ] PGSQL             PostgreSQL database support
─────────────────────── Menuselect Interface Backend ─────────────────────
[ ] NCURSES           Console (text) interface support
[x] NEWT              Newt User Interface

asterisk_enable="YES"

# /usr/local/etc/rc.d/asterisk start

# asterisk -rv