Japanese telephony speaking clock for Asterisk (or any applications supporing G.711 mu-law).
cargo build --release
sudo cp target/release/my117 /usr/local/bin/Asterisk musiconhold.conf:
[my117]
mode=custom
application=/usr/local/bin/my117
format=ulaw
Asterisk extensions.conf:
exten => _117,1,Answer
same => n,MusicOnHold(my117)
same => n,Hangup
Apache 2.0 or MPL 2.0.