为移动设备调优 asterisk-1.8.0-rc2
参考文档：http://www.venturevoip.com/How-to-asterisk.1.8_SRTPTLS_snom300_pgsm.pdf
Edit file /etc/Asterisk/codecs.conf
1. nano /etc/Asterisk/codecs.conf
Add the following at the end of the file
[amr]
octet-aligned=1
;codec_amr: Must be one of MR475, MR515, MR59, MR67, MR74, MR795, MR102, MR122, MRDTX
mode = MR475
dtx=0
cng = 1
vad = 0
SIP Timers
edit sip.conf in [general] sections :
timert1=3000 ; Default T1 timer
Disable SIP Session Timers
On Asterisk those must be disabled as follow:
edit sip.conf in [general] section: 加入一行
session-timers=refuse
Reduce RTP timeout
edit sip.conf in [general] section:
rtptimeout=15
Audio buffer tuning
Edit sip.conf and put the following value in [general] section:
jbenable = yes
jbforce = no
jbmaxsize = 200
jbresyncthreshold = 1200
jbimpl = fixed
Disable TCP keepalive
每次Linux启动，这个参数都要重新设置一下
On Linux you can disable TCP keepalive with the following command:
echo 0 > /proc/sys/net/ipv4/tcp_keepalive_probes
省事的办法：
vi /etc/rc.local
加入这一行
echo 0 > /proc/sys/net/ipv4/tcp_keepalive_probes
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注册用户：
编辑sip.conf，添加下面一行把sip_additional.conf里面定义的用户添加进来
#include sip_additional.conf
编辑sip_additional.conf，添加下面两行
[501]
deny=0.0.0.0/0.0.0.0
type=friend
secret=501
qualify=yes
port=5060
pickupgroup=
permit=0.0.0.0/0.0.0.0
nat=yes
mailbox=501@device
host=dynamic
dtmfmode=rfc2833
dial=SIP/501
context=from-internal
canreinvite=no
callgroup=
callerid=device <501>
accountcode=
call-limit=50
[502]
deny=0.0.0.0/0.0.0.0
type=friend
secret=502
qualify=yes
port=5060
pickupgroup=
permit=0.0.0.0/0.0.0.0
nat=yes
mailbox=502@device
host=dynamic
dtmfmode=rfc2833
dial=SIP/502
context=from-internal
canreinvite=no
callgroup=
callerid=device <502>
accountcode=
call-limit=50
====================================================================
x-lite客户端一直都连接不上，
asterisk控制台没有任何信息显示
怀疑是网络问题
1)-----------------
编辑sip.conf以监听 tcp 5060端口
tcpenable=yes
netstat -na |grep 5060显示监 tcp 听5060端口了
telnet 192.168.158.134 5060
可以了，但是有点慢，怀疑是DNS resolve配置还有改进
2)-----------------
执行命令seutp
在Firewall configuration设置Security level为disable
重新启动vmware，xlite可以登录了，但是不能给别人打电话，应该是电话路由有问题。
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下一步：
需要一套方便管理的asterisk的后台，那么我个人freepbx是非常好的一套管理软件