Automatically Bring up an Ethernet Interface at Boot Without IP Address

In order to bring up Ethernet interface "eth1" at boot without IP address, add the following section to the file "/etc/network/interfaces":

auto eth1
iface eth1 inet manual
up ifconfig eth1 up

This tells the system to configure the interface (i.e. eth1) manually. The last line tells the system on bringing the interface up, use the command "ifconfig eth1 up".

Free Music

For any Asterisk deployment, it often needs on-hold music or vivid ring tone music. Free music is a good choice for these purposes.

"Free music is music that, like free software, can freely be copied, distributed and modified for any purpose. Thus free music is either in the public domain or licensed under a free license. It does not mean that there should be no fee involved. The word free refers to freedom (as in free software), not to price." [1]

The following musicians provide free music licensed under Creative Commons: By Attribution 3.0 (http://creativecommons.org/licenses/by/3.0/)

Kevin MacLeod
http://www.incompetech.com/m/c/royalty-free/

Jimmy G
http://www.jimmyg.us/JimmyGMusic/MusicDownloads/tabid/99/Default.aspx

Jonathon Roberts
http://www.jmtr.com/jmtr-royalty-free.html


References:
[1] Free Music, Wikipedia, http://en.wikipedia.org/wiki/Free_music