## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://docs.cognigy.com/llms.txt)

Use this file to discover all available pages before exploring further.

_Cognigy Voice Gateway_ is an AI-based solution to deploy voice AI Agents for automated phone conversations.

With Cognigy Voice Gateway, you can automate calls using AI-powered speech recognition, IVR, multilingual support, and seamless transfers to contact centers.

Designed for enterprise-scale, Voice Gateway ensures reliable, intelligent voice interactions that elevate customer experiences.

### About Voice Gateway

Start with our beginner’s articles if you’re new to Cognigy Voice Gateway or considering purchasing this product.

### Build Voice Agents

Create voice agents using voice Nodes, verbs, and Endpoints.

### Configure Voice Calls

Use the Voice Gateway Self-Service Portal to configure call routing and connect this configuration to your voice agent.

### Outbound Calls

Create and manage outbound calls, including routing and authentication.

### New Click To Call Widget

Use the multimodal Click To Call widget to enable customers to speak directly with your voice AI Agent with a single click.

### Record and Monitor Call Data

Record and analyze call data to identify areas for improvement.

### Call Failure Handling

Diagnose and resolve call issues with backup providers and TTS caching.

### Supported Providers

Use available SIP trunk and speech providers or create a custom speech provider.

### Administer

Create and administer users in the Voice Gateway Self-Service Portal.

### References

Access detailed reference materials including SIP response codes and events.