I want to install Asterisk server on Ubuntu 11.10. Is there a tutorial?
There is a tutorial here which uses a slightly out of date version of Asterisk. It is for Ubuntu server 11.04.
The latest version of Asterisk is listed here. (Currently 1.8.x for Long Term Support till 2015-10-21 or the newer 10.x supported until 2013-12-15.)
You can use the newest version, currently 10.4.1 by replacing