主頁（http://m.by236.com）：Kamailio(OpenSER)開源SIP服務器-呼叫重定向
Kamailio是一個開源的SIP服務器，原名OpenSER
Kamailio is an Open Source, GPL2, SIP Server Routing Platform. It is written in C for Linux/Unix plaforms and focuses on performance, flexibility and security.
On Nov 04, 2008, Kamailio and SIP Express Router have started the SIP Router Project.
Web links
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Home page with new project name: http://www.kamailio.org
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Home page with old project name: http://www.openser-project.org
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SourceForge.net Project page: http://sourceforge.net/projects/openser/
Features
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SIP proxy/registrar/redirect server (RFC3261, RFC3263)
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UDP/TCP/TLS/SCTP support
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Transactional stateful proxy
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Modular architecture
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Programmable configuration file
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ENUM support
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Call Processing Language (CPL)
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Gateway to sms or xmpp
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Authentication, authorization and accounting via Radius or database
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NAT traversal system
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Least cost routing
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Load balancing
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Carrier routing
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Multiple database backends: MySQL, Postgres, Oracle, BDB or flat files
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SIMPLE Presence Server (IETF SIMPLE extensions - rich presence)
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Dialog Info Presence - SLA/BLA
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XCAP and RLS
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Presence User Agent
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Dialog Stateful Proxy
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Instant Messaging
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SNMP support
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Perl Programming Interface
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Java SIP Servlet Application server
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Over 80 modules (extensions)
Documentation
我們使用Kamailio主要用在SIP dispatcher server，即SIP redirect server
安裝及配置手冊如下
一．安裝
1．依賴包：
libmysqlclient & libz (zlib) ：mysql DB support (the db_mysql module) Shared libraries
MySQL-shared-5.1.32-0.glibc23.i386.rpm
MySQL-devel-community-5.1.32-0.rhel5.i386.rpm
libxml2：cpl-c (Call Processing Language) or the presence modules (presence and pua*)
libperl：perl scripting from you config file (perl module)
2．源代碼安裝
make，make modules，make install
或者make all，make install
參考：
3．啟動：kamctl start
4．重啟：kamctl restart
5．監控服務狀態：kamctl moni
6．MySQL配置：
1）安裝：
edit Makefile.var files to include the MySQL module
vim Makefile.vars
Uncomment the next line in the file:
MODS_MYSQL=on
cp /usr/local/lib/mysql/libmysqlclient.so.16 /usr/lib
Edit now /usr/local/etc/kamailio/kamctlrc and add:
DBENGINE=MYSQL
SIP_DOMAIN=pryko.com
6.1 創建數據庫：kamdbctl create
6.2管理員登錄：user 'admin' with password ' openserrw '
6.3 添加用戶：kamctl add <name> <password> <email>
6.4 默認值：database url, users and passwords
- DEFAULT_DB_URL="mysql://opensips:opensipsrw@localhost/opensips"
- r/w user: openser; passwd: openserrw
- r/o user: openserro; passwd: openserro
二．配置1．配置文件 kamailio.cfg
/usr/local/etc/kamailio/kamailio.cfg
2．配置文件 kamctlrc
/usr/local/etc/kamailio/kamctlrc
三．腳本
參考文檔：
Kamailio Wiki
http://www.kamailio.com/dokuwiki
Cookbooks and Reference
http://www.kamailio.com/dokuwiki/doku.php/core-cookbook:1.5.x
Kamalio 1.5.x Module Functions Index
http://www.kamailio.com/dokuwiki/doku.php/modules:1.5.x:index-functions
四．負載均衡Load Balancing參考：http://www.kamailio.org/dokuwiki/doku.php/asterisk:load-balancing-and-ha
4.1配置文件 kamailio.cfg
loadmodule("dispatcher.so")
modparam("dispatcher", "list_file", "/usr/local/etc/kamailio/dispatcher.list")
modparam("dispatcher", "force_dst", 1)
4.2 ---dispatcher.list----文件
# group sip addresses of your * units
1 sip:221.5.152.171:5060
1 sip:221.5.152.170:5060
4.3 kamctl命令：kamctl dispatcher show
-- command 'dispatcher' - manage dispatcher
* Examples: dispatcher addgw 1 sip:1.2.3.1:5050 1 'outbound gateway'
* dispatcher addgw 2 sip:1.2.3.4:5050 3 ''
* dispatcher rmgw 4
dispatcher show ..................... show dispatcher gateways
dispatcher reload ................... reload dispatcher gateways
dispatcher dump ..................... show in memory dispatcher gateways
dispatcher addgw <setid> <destination> <flags> <description>
.......................... add gateway
dispatcher rmgw <id> ................ delete gateway
查看載入的配置：kamctl dispatcher dump
修改后重新載入配置：kamctl dispatcher reload
如需使用，需安裝MySQL-client-community-5.1.32-0.rhel5.i386.rpm
否則報錯：ERROR: This command requires a database engine - none was loaded
五．與Asterisk對接負載均衡注意事項：sip.conf
注釋如下行
;canreinvite=no ; Asterisk by default tries to redirect
Asterisk#1 10.10.10.56
配置sip.conf
[5000]
type=friend
;username=5000
secret=5000_phone2
callerid=5000
qualify=yes ; Qualify peer is no more than 2000 ms away
nat=no ; This phone is natted
host=dynamic ; This device registers with us
;canreinvite=no ; Asterisk by default tries to redirect
配置extension.conf
[default]
exten => 6000,1,Dial(SIP/6000@10.10.10.57,60)
exten => 5000,1,Dial(SIP/5000,60)
Asterisk#2 10.10.10.57
配置sip.conf
[6000]
type=friend
;username=6000
secret=6000_phone2
callerid=6000
qualify=yes ; Qualify peer is no more than 2000 ms away
nat=no ; This phone is natted
host=dynamic ; This device registers with us
;canreinvite=no ; Asterisk by default tries to redirect
配置extension.conf
[default]
exten => 6000,1,Dial(SIP/6000,60)
exten => 5000,1,Dial(SIP/5000@10.10.10.136,60)
Kamailio 10.10.10.136
配置kamailio.cfg
…
loadmodule "dispatcher.so"
modparam("dispatcher", "list_file", "/usr/local/etc/kamailio/dispatcher.list")
…
route{
if ( !mf_process_maxfwd_header("10") )
{
sl_send_reply("483","To Many Hops");
drop();
};
ds_select_dst("1", "0");
forward();
}
配置dispatcher.list
# line format
# setit(integer) destination(sip uri) flags (integer, optional)
1 sip:10.10.10.56:5060
測試：
登錄10.10.10.57上的6000，登錄10.10.10.56上的5000
從6000呼叫5000，會呼叫10.10.10.136上的5000，10.136重定向到10.56
六．按號碼段重定向網關
配置kamailio.cfg
使用正則表達式
route{
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
}
if (uri=~"^sip:5[0-9]+@10.10.10.136$") {
if (is_method("INVITE")) {
ds_select_dst("1", "0");
forward();
exit;
}
}
if (uri=~"^sip:8[0-9]+@10.10.10.136$") {
if (is_method("INVITE")) {
ds_select_dst("2", "0");
forward();
exit;
}
}
sl_send_reply("404","Not here");
exit;
}
配置dispatcher.list
# line format
# setit(integer) destination(sip uri) flags (integer, optional)
1 sip:10.10.10.56:5060 #1
2 sip:10.10.10.54:5060
測試：
登錄10.10.10.57上的6000，登錄10.10.10.56上的5000
從6000呼叫5000，會呼叫10.10.10.136上的5000，10.136重定向到10.56
從6000呼叫8002，會呼叫10.10.10.136上的8002，10.136重定向到10.54
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