一、hello wold：
1、启动dadhi、asterisk后，输入下面命令可以进入asterisk的命令行
# asterisk -vvgc
Asterisk already running on /var/run/asterisk/asterisk.ctl. Use 'asterisk -r' to connect.
# asterisk -r
Asterisk 14.7.6, Copyright (C) 1999 - 2016, Digium, Inc. and others.
Created by Mark Spencer <markster@digium.com>
Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.
This is free software, with components licensed under the GNU General Public
License version 2 and other licenses; you are welcome to redistribute it under
certain conditions. Type 'core show license' for details.
=========================================================================
Connected to Asterisk 14.7.6 currently running on mbd-toutiao-worker-online109-shgq (pid = 8742)
mbd-toutiao-worker-online109-shgq*CLI>
补充：启动dadhi可以用service dadhi start
2、配置asterisk
1）extensions.conf文件：
cd /etc/asterisk
mv extensions.conf extensions.sample
vim extensions.conf
[from-internal]
exten = 100,1,Answer()
same = n,Wait(1)
same = n,Playback(hello-world)
same = n,Hangup()
2）sip.conf
备份sip.conf，然后
[general]
context=default
[6001]
type=friend
context=from-internal
host=dynamic
secret=unsecurepassword
disallow=all
allow=ulaw
3）重启asterisk
4）查看用户
mbd-toutiao-worker-online109-shgq*CLI> sip show users
Username Secret Accountcode Def.Context ACL Forcerport
6001 unsecurepasswor from-internal No No
每次修改sip.conf后可以使用下面命令重新加载
mbd-toutiao-worker-online109-shgq*CLI> sip reload
mbd-toutiao-worker-online109-shgq*CLI>
每次修改extension.conf文件后可以使用下面命令重新加载
mbd-toutiao-worker-online109-shgq*CLI> dialplan reload
Dialplan reloaded.
3、下载客户端测试
1）在Windows上下载eyeBeam
2）配置eyeBeam：
右键，然后选择sip
3）添加配置
4）保存后，根据extension.conf设置的拨号规则，直接拨打100，就会有反应。
参考：
https://wiki.asterisk.org/wiki/display/AST/Hello+World
https://danielfree.net/archives/1081/
https://hello.lanbing.org/post/2013142.html
https://www.zybuluo.com/Lee2011/note/32706
http://blog.duxin.info/sip-setup/
