Media Server Deployment and Configuration Guide (With Google Transcription Support)

Prerequisites

Software Requirements

Hardware Requirements

Port Utilization Requirements

The following ports must be open on the server for the voice connector to function.

The ports can be opened as follows:

1. SSH into the Debian server.

   1. Use command

      ssh username@server-ip
      

   2. Enter user password.

   3. Use command

      su
      

   4. Enter root password

2. Run the following command:

   • sudo iptables -A INPUT -p PROTOCOL -m PROTOCOL --dport PORT -j ACCEPT
     

   • Where PORT is the required Firewall port/port range and PROTOCOL is the associated Network Protocol.

3. Save this port configuration with command:

   sudo iptables-save
   

Additional Firewall Rules

• iptables -A INPUT -i lo -j ACCEPT

• iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

• iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT

• iptables -P INPUT DROP

• iptables -P FORWARD DROP

• iptables -P OUTPUT ACCEPT

Setup Google Cloud Speech Service

• Create a Google Account.

• Create a project on Google Cloud console.

• Enable a Billing account for this project.

• Enable Speech API for this project.

• Create credentials for the Speech service in a JSON format.

• Download this JSON file and rename it to google-creds.json.

• Upload this file to the Debian server onto which the Media Server will be deployed, and move it to the /home directory.

Install Media Server

1. SSH into the Debian server onto which the Media Server will be deployed.

   1. Use command

      ssh username@server-ip
      

   2. Enter user password.

   3. Use command

      su
      

   4. Enter root password.

2. Run commands:

   • sudo apt update
     sudo apt install -y lua-sec certbot lua-socket lua-json lua-dkjson
     apt install -y git
     git clone -b google_transcribe https://efcx:RecRpsuH34yqp56YRFUb@gitlab.expertflow.com/rtc/media-server-setup.git "/usr/src/fusionpbx-install.sh"
     chmod -R 777 /usr/src/fusionpbx-install.sh
     cd /usr/src/fusionpbx-install.sh/debian && ./install.sh
     

3. Once the installation has finished, some information will be shown as below:

1. In a web browser, open the domain name URL and use the provided username and password to log on.

   1. A screen like below should open for a successful installation:

1. If the page does not open, then go to the command line and run

   systemctl stop apache2
   systemctl restart nginx
   

2. Try opening the page in Step 3b again, and if it does not open, reset the server and start the installation again.

3. In the command line, use the command to access the Freeswitch command line as shown below:

   fs_cli
   

Configure Global Transcription

• Login to Media Server web interface. 

  • Open in browser: https://IP-addr, where IP-addr is the IP address of the Media Server.

• Add the username and password that was shown upon installation and press LOGIN.

• Select the Variables option from the Advanced tab.

• Press ADD on the top right.

• Set the Category to Defaults, Name to transcription-vendor and Value to google.

• Save the changes by pressing SAVE button in top right corner.

• Open SIP Status under the Status tab.

• Press the RELOAD XML button at the top right.

• Open the Dialplan Manager section under the Dialplan tab.

•  Add a new Dialplan by pressing the ADD Button on the top.

•  Fill the form with following details :

  • Name = google_transcription

  • Condition 1 =  Click the black arrow button, then in the field paste ${transcription-vendor}

    • For the field to the right, add ^google$

  • Action 1  =  Select first item from the list  

• Save the form by pressing save button on top right corner.

• Re-open google_transcription dialplan.

• Set the Continue field to True.

• Set the order field to 889.

• Set the Context field to global.

• Set the Domain field to Global.

• Delete the second row by checking the box in the Delete column for the second row and pressing SAVE in the top right.

• Add the following information to this dialplan:

• For <language> a language tag can be chosen from this list, based on the speech model used e.g. en-US.

• Save the changes by pressing SAVE button in top right corner.