VoIP Articles

Why Do VoIP Calls Have No Audio? Common Fixes and CLI Troubleshooting

Discover why VoIP calls sometimes have no audio and learn step-by-step CLI-based fixes for NAT, firewall, and codec issues.

The Future of AI-Powered Virtual Agents in VoIP Systems

AI virtual agents are transforming VoIP with NLP, speech-to-text, and smart call routing. Learn their benefits, challenges, CLI tools, and future trends.

How DNS Works and Why It Matters for VoIP

In this guide, we explain how DNS works in VoIP, the role of SRV records, Linux CLI checks, and configuration tips for Asterisk. Learn how to troubleshoot DNS issues and secure your setup with DNSSEC.

Essential VoIP Terminology Explained: Codec, PBX, DID, Trunk & More

This guide explains common terms—codec, extension, PBX, trunk, DID, and more with simple definitions and examples anyone can follow.

What is VoIP? How It Works, Types, Benefits, and Limitations

VoIP (Voice over Internet Protocol) lets you make calls over the internet instead of traditional phone lines. This guide explains how VoIP works, its key components, types of services, advantages, limitations, and where it’s used in the real world.