1. 安装opensips

ubuntu下安装：

1）执行以下的脚本

openSIPS | APT Repository

2）apt-get install opensips

安装完毕后，再选择需要的module继续安装，不需要编译

如果只是用作load balancer，那么只需要安装

apt-get install opensips-mysql-module opensips-auth-modules opensips-http-modules opensips-tls-openssl-module opensips-tlsmgm-module

3）执行osipsconfig获取新的脚本

保存好脚本后，会看到新的脚本在哪里，编辑脚本

4）重启opensips

opensips restart

2. 安装opensips-cli

apt-get install opensips-cli

vi ~/.opensips-cli.cfg

将以下的配置黏贴到.opensips-cli.cfg里面

[default]
log_level: WARNING
prompt_name: opensips-cli
prompt_intro: Welcome to OpenSIPS Command Line Interface!
prompt_emptyline_repeat_cmd: False
history_file: ~/.opensips-cli.history
history_file_size: 1000
output_type: pretty-print
communication_type: fifo
fifo_file: /tmp/opensips_fifo
 
# 选择模块添加数据库表结构
database_modules: ALL
 
# 数据库脚本目录
database_schema_path: /root/soft/opensips-3.3.1/scripts
 
# 数据库管理员账号
#database_admin_url: postgres://root@localhost
database_admin_url: mysql://root@localhost
 
# 会新建数据库账号：opensips，密码：opensipsrw
# database_url: postgres://opensips:opensipsrw@localhost
database_url: mysql://opensips:opensipsrw@localhost
# 数据库名称
database_name: opensips
 
domain: 10.10.3.153
 
plain_text_password: true

 3. 安装mysql

apt install mysql-server
apt install mysql-client
apt install libmysqlclient-dev

vim /etc/mysql/mysql.conf.d/mysqld.cnf
将bind-address后的127.0.0.1 改为0.0.0.0
bind-address = 0.0.0.0

打开vim /etc/mysql/my.cnf文件 增加
[mysqld]
sql_mode='' 
character-set-server = latin1

service mysql restart

初始化mysql命令：
mysql_secure_installation

创建用户
CREATE USER 'opensips'@'localhost' IDENTIFIED BY 'opensipsrw'; 
GRANT ALL PRIVILEGES ON opensips.* TO 'opensips'@'localhost'; 
flush privileges;

4. 创建并配置数据库

opensips-cli -x database create

 5. 插入dispatcher模块的需要负载均衡的mrcpserver

INSERT INTO `dispatcher` (`setid`, `destination`, `state`, `weight`, `priority`, `attrs`, `description`) VALUES
    (19, 'sip:10.129.39.88:7010', 0, 1, 100, 'pstn=100', 'TTS_MRCP_CLIENT_FS_7010'),
    (19, 'sip:10.129.39.88:7011', 0, 1, 100, 'pstn=100', 'TTS_MRCP_CLIENT_FS_7011');

6. 将dispatcher对应的route代码加入到/etc/opensips/opensips.cfg的配置文件中

loadmodule "dialog.so"
modparam（"dialog", "profiles_with_value", "caller ; domain"）
modparam（"dialog", "profiles_no_value", "progress ; active"）
modparam（"dialog", "db_mode", 2）
modparam（"dialog", "db_url", "mysql://opensips:opensipsrw@localhost/opensips"）


route {
    # 省略无关代码 ...
    if (is_method("INVITE")) {
        xlog("ua = $ua , callid = $ci, fu = $fu , tu = $tu , ru = $ru , du =$du src:$si, $(rb{sdp.line,m})");
        $var(dlgPingTag) = "Pp";
        if ( $ua == "OPENSIPS_TTS_MRCP_CLIENT" ) {
               $var(dlgPingTag) = "";  # TTS 的SIP通道不能做 OPTION 探测
        }
        if ( !create_dialog("$var(dlgPingTag)")) {
            send_reply(500,"Internal Server Error");
            exit;
        }
        if ( $ua == "OPENSIPS_TTS_MRCP_CLIENT" ) {
             # 指定 setid 为 19，与插入 dispatcher 表的数据相匹配，选择可用的节点
             $var(lbRst) = ds_select_dst(19, 4);
             if($var(lbRst) == -1) {
                  xlog("Failed by dispatcher group_id: 19");
                  t_reply(480, "MRCP server Unavailable");
                  exit();
             }
             if ( $var(lbRst) > 0) {
                 $ru = "sip:" + $(du{uri.host}) + ":" + $dp;
                 xlog("[$fU->$rU] Route to $ru");
             } else {
                xlog("[$fU->$rU] No available server now");
                t_reply(480, "$var(node_type) Unavailable");
                exit();
             }
        } else {
            # 其他类型 INVITE 处理 .....
        }
    }
    route(relay);
}

route[relay] {
    # for INVITEs enable some additional helper routes
    if (isflagset("NAT")) {
        add_rr_param(";nat=yes");
    } 
    
    if (!t_relay()) {
        send_reply(500,"Internal Error");
    }
    exit;
}

7. FreeSWITCH 的配置

在 FreeSWITCH 的 conf/mrcp_profiles 目录 下新增一个配置文件，将其指向 OpenSIPS 服务器并指定 UA 名称，然后重启 FreeSWITCH

<include>
  <!-- UniMRCP Server MRCPv2 -->
  <profile name="opensips-tts-mrcp2" version="2">
    <!-- OpenSIPS 服务器地址 端口号-->
    <param name="server-ip" value="127.0.0.1"/>
    <param name="server-port" value="8060"/>

    <!-- FreeSWITCH IP、端口以及 SIP 传输方式 -->
    <param name="client-ip" value="$${local_ip_v4}" />
    <param name="client-port" value="5072"/>
    <param name="sip-transport" value="udp"/>

    <param name="speechsynth" value="speechsynthesizer"/>
    <param name="speechrecog" value="speechrecognizer"/>
    <!-- SIP 请求携带的 ua 名称 -->
    <param name="ua-name" value="OPENSIPS_TTS_MRCP_CLIENT"/> 

    <!-- Add any default MRCP params for SPEAK requests here -->
    <synthparams>
    </synthparams>

    <!-- Add any default MRCP params for RECOGNIZE requests here -->
    <recogparams>
      <!--param name="start-input-timers" value="false"/-->
    </recogparams>
  </profile>
</include>

参考资料：

Opensips 3.3.1安装配置_ubuntu 18.04 安装opensips-CSDN博客

OpenSIPS 3.1 负载均衡 MRCP 服务器的实现_opensips 负载均衡_谈谈1974的博客-CSDN博客