To upgrade from Asterisk 1.8 to 11

1. Make sure the latest Enswitch fixes are installed.
2. If running Debian or Ubuntu, do:
   • apt-get install sqlite3 libsqlite3-dev libspandsp2 libspandsp-dev
3. If running CentOS, Fedora, or Redhat, do:
   • yum -y install sqlite-devel spandsp spandsp-devel
4. Do:
   • ls -l /usr/lib/asterisk/modules/codec_g729* # To check if G.729 is in use.
   • mv /usr/lib/asterisk/modules /usr/lib/asterisk/modules-1.8
   • enswitch install -u asterisk-11
   • astdb2sqlite3 /var/lib/asterisk/astdb
5. If using G.729, do:
   • enswitch install -u g729-11
6. In /etc/asterisk/extensions.conf, change "extensions_enswitch_18.conf" to "extensions_enswitch_11.conf".
7. On the Enswitch web interface, under System » Configuration, set "Asterisk version" to "11".
8. Reboot the Asterisk machine.
9. Test calls.