Multple points of termination using a single extension.
"HOW DO I DIAL A FEW PLACES WITH ONE EXTENSION?!??!"

exten => 1,1,Playback,transfer
exten => 1,2,Dial(IAX2/user@NuFone/${EXTEN}|20|r)
exten => 1,3,Dial(IAX2/weirdness@NuFone/456${EXTEN}|20|r)
exten => 1,4,Dial(IAX2/guest@shido.gotdns.org/3000)
exten => 1,5,Dial(IAX2/guest@yoohoo.com&SIP/3000|20|r)