Introduction
In this hands-on lab, you will build a custom voicemail application using Asterisk. By the end of this lab, you will be able to:
- Set up and configure the voicemail system in Asterisk.
- Develop a custom voicemail application tailored to specific requirements.
- Test and troubleshoot the custom voicemail application.
This practical exercise will provide you with the skills needed to create and manage customized voicemail solutions using Asterisk.
Step-by-Step Instructions
1. Configure Voicemail in Asterisk
Edit Voicemail Configuration File
Open the voicemail configuration file:
sudo nano /etc/asterisk/voicemail.confAdd the following configuration:
[default]
1001 => 1234,User One,user1@yourdomain.com
1002 => 1234,User Two,user2@yourdomain.comSave and Exit
Press Ctrl+O to save the file. Press Enter to confirm. Press Ctrl+X to exit the nano editor.
2. Configure Dial Plan for Voicemail
Edit Extensions Configuration
Open the extensions configuration file:
sudo nano /etc/asterisk/extensions.confAdd the following dial plan for voicemail:
[internal]
exten => 1001,1,Dial(SIP/1001,20)
exten => 1001,n,Voicemail(1001@default,u)
exten => 1001,n,Hangup()
exten => 1002,1,Dial(SIP/1002,20)
exten => 1002,n,Voicemail(1002@default,u)
exten => 1002,n,Hangup()Reload Asterisk Configuration
Access Asterisk CLI:
sudo asterisk -rReload the configurations:
dialplan reload
voicemail reload
exit3. Test Voicemail Setup
Leave a Voicemail
Dial 1002 from any SIP client and let it go to voicemail. Leave a voicemail message for extension 1002.
Retrieve Voicemail
Dial *97 from extension 1002. Enter the password 1234 when prompted. Listen to the voicemail message left for extension 1002.
Conclusion
By following these detailed hands-on labs, you will build a comprehensive understanding of Asterisk, starting from basic installation and configuration to advanced telecommunication solutions. Each lab builds upon the previous one, ensuring a smooth learning curve and avoiding redundancy.