Voice over Internet Protocol (VOIP)

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Voice over Internet Protocol (VOIP)

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VOIP (Voice over Internet Protocol) enables voice and multimedia communication over the internet instead of traditional phone lines. It’s widely used for cheaper long-distance calls, video conferencing, messaging, business communications, mobile apps, and IoT devices. Despite its benefits, VOIP relies on internet quality and faces security challenges like hacking.

Advantages of VOIP:

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1. Cost Savings:

   • VOIP typically offers lower costs for long-distance and international calls compared to traditional telephone services.

2. Flexibility:

   • Users can make calls from any internet-connected device, enhancing mobility and remote work capabilities.

3. Integration:

   • VOIP easily integrates with other digital services and business applications, improving productivity and efficiency.

4. Scalability:

   • VOIP systems can scale easily to accommodate growing business needs or fluctuations in call volumes.

Disadvantages of VOIP:

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1. Dependence on Internet Quality:

   • Call quality and reliability can be affected by internet connection stability and bandwidth availability.

2. Security Concerns:

   • VOIP calls may be susceptible to hacking, eavesdropping, and fraud without robust security measures in place.

3. Emergency Calls:

   • VOIP may have limitations in accurately identifying and routing emergency calls (911 in the US), compared to traditional landline services.

4. Power Dependence:

   • VOIP requires power and internet access to function, which may be a limitation during power outages or network disruptions.

Setting Up VOIP with Asterisk on Linux

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To set up VOIP using Asterisk on Linux, follow these steps:


1. Install Asterisk:

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Configure Asterisk Files: Navigate to the Asterisk configuration directory:

cd /etc/asterisk


Backup Configuration Files: Backup the default configuration files:

Edit Configuration Files: Edit the configuration files and paste the contents from the provided GitHub repository:

sudo nano sip.conf

sudo nano voicemail.conf

 sudo nano extensions.conf

GitHub Repository:

https://github.com/Zenvila/Voice-over-IP

Reload Asterisk: Enter the Asterisk command line interface and reload the configuration:


sudo asterisk -r

reload


Check Client Connections: Verify client connections in Asterisk:

sip show peers


Here is the command where you can check ip:

ifconfig



This command should display connected SIP clients.

1. Testing: Download a SIP softphone like MizuDroid on your mobile device and configure it using the provided settings to make test calls.

Conclusion

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Setting up VOIP with Asterisk on Linux allows for flexible and cost-effective voice communication solutions. By following these steps and configuring Asterisk correctly, you can leverage the benefits of VOIP for your communication needs.

If you have any misconceptions or queries, please mention me. For additional resources, here is the video link:

https://www.youtube.com/watch?v=rtHFdhCm434

P.S.

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If you spot any mistakes, please don’t hesitate to point them out. We’re all here to learn together! 😊

Haris
FAST (NUCES)
BS Computer Science | Class of 2027

📌 GitHub: https://github.com/Zenvila
📌 LinkedIn: https://www.linkedin.com/in/haris-shahzad-7b8746291/
📌 Member: COLAB (Research Lab)