Free Voice-Pack
Installation Instructions

Once you have downloaded the desired voice-pack to your Asterisk server, installation is performed with the following commands:

cp voicepack.tgz /var/lib/asterisk
cd /var/lib/asterisk
mv sounds sounds.old
tar -xzf voicepack.tgz
cd sounds
ln -s /var/spool/asterisk/vm vm
ln -s /var/spool/asterisk/voicemail voicemail

Where voicepack.tgz is the voice-pack file downloaded from this page. If you are using a non-standard installation, change /var/lib/asterisk to the folder than contains the sounds folder.