These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.16 s (backtrack: 0/20).

[ebuild  N     ] net-misc/asterisk-core-sounds-1.6.1-r1::gentoo  USE="gsm -alaw -g722 -g729 -siren7 -siren14 -sln16 -ulaw -wav" L10N="-en-AU -en-GB -es -fr -it -ja -ru -sv" 2409 KiB
[ebuild  N     ] net-misc/asterisk-extra-sounds-1.5.2::gentoo  USE="gsm -alaw -g722 -g729 -siren7 -siren14 -sln16 -ulaw -wav" L10N="-en-GB -fr" 4154 KiB
[ebuild  N     ] net-misc/asterisk-moh-opsound-2.03-r1::gentoo  USE="gsm -alaw -g722 -g729 -siren7 -siren14 -sln16 -ulaw -wav" 1737 KiB
[ebuild  N     ] media-libs/alsa-topology-conf-1.2.5.1-r1::gentoo  USE="-verify-sig" 12 KiB
[ebuild  N     ] media-libs/alsa-ucm-conf-1.2.16.1::gentoo  USE="-verify-sig" 83 KiB
[ebuild  N     ] acct-group/asterisk-0-r3::gentoo  0 KiB
[ebuild  N     ] dev-libs/jansson-2.15.1:0/4::gentoo  USE="-doc -static-libs" 478 KiB
[ebuild  N     ] media-libs/alsa-lib-1.2.16.1::gentoo  USE="python -debug -doc -verify-sig" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13 (-python3_15)" 1104 KiB
[ebuild  N     ] acct-user/asterisk-0-r3::gentoo  0 KiB
[ebuild  N     ] dev-libs/gmime-2.6.23-r2:2.6::gentoo  USE="smime -doc -test -vala" 5095 KiB
[ebuild  N     ] net-misc/asterisk-20.21.0:0/20::gentoo  USE="alsa caps http iconv ssl -blocks -bluetooth -calendar -cluster -codec2 -curl -debug -deprecated -doc -freetds -gtalk -ilbc -ldap -lua -mysql -newt -odbc -pjproject -portaudio -postgres -radius (-selinux) -snmp -span -speex -srtp -static -statsd (-systemd) -unbound -vorbis -xmpp" LUA_SINGLE_TARGET="lua5-1 -lua5-3 -lua5-4" VOICEMAIL_STORAGE="-imap -odbc" 28163 KiB
[ebuild  N     ] net-misc/asterisk-base-5::gentoo  15 KiB

Total: 12 packages (12 new), Size of downloads: 43245 KiB