Setup Asterisk 1.4 Configuration Files from Asterisk 1.2

Copy the following configuration files from Asterisk 1.2 to 1.4:
/etc/asterisk/iax.conf
/etc/asterisk/sip.conf
/etc/asterisk/extensions.conf
/etc/asterisk/musiconhold.conf
/etc/asterisk/features.conf

Copy music and custom tones files from Asterisk 1.2 to 1.4:
/var/lib/asterisk/moh-native/*
/var/lib/asterisk/sounds/custom/*

Replace applicaiton "DigitTimeout(5)" by "Set(TIMEOUT(digit)=5)" in extensions.conf.