Asterisk 11 on CentOS 6

Asterisk Basics:
http://www.youtube.com/playlist?list=PL9E241EDD7EDF8E67

SIP Trunk:
http://www.youtube.com/watch?v=ymViEusgxsg

http://wiki.sipnet.ru/index.php/Пример_настроек_для_Asterisk_1.6




Examples:
type=friend 
context=internal 
username=202 
callerid=Conference Rm <202> 
host=dynamic 
secret=202 
nat=no 
canreinvite=no 
disallow=all 
allow=ulaw 
allow=alaw 
allow=gsm 
allow=g729 
amaflags=default 
accountcode=20 
pickupgroup=1 
call-limit=1 

Paterns
http://www.freepbx.org/support/documentation/module-documentation/outbound-routes

Call routing
http://www.voip-info.org/wiki/view/Asterisk+E164+Call+Routing


Asterisk and Mitel Phones

http://www.voip-info.org/wiki/view/Asterisk+phone+Mitel+5220

http://www.voipling.com/2008/11/asterisk-and-mitel-5340-myth-demystified/