# 4PSA Documentation - VoipNow & DNS Manager

> Complete technical documentation for 4PSA products including VoipNow VoIP platform and DNS Manager. Comprehensive administrator, user, and developer guides with API references, installation instructions, and feature documentation.

This documentation covers two primary products: VoipNow, a comprehensive VoIP communications platform with unified communications features, and DNS Manager, a powerful DNS zone management solution. The documentation includes over 1200 pages covering installation, configuration, administration, end-user features, API integration, and troubleshooting across administrator, user, and developer perspectives.

## VoipNow Documentation

[VoipNow Administrator Guide](https://github.4psa.me/Hubgets/docs/VoipNow/Administrator-Guide/Installation-and-Upgrade): Complete installation, upgrade, configuration, and system administration including infrastructure requirements, deployment scenarios, and maintenance procedures
[VoipNow User Guide](https://github.4psa.me/Hubgets/docs/VoipNow/User-Guide/Quick-Start-Guides): End-user documentation covering interface navigation, call handling, voicemail, conferencing, extensions, phone settings, and quick start guides
[VoipNow Developer Guide](https://github.4psa.me/Hubgets/docs/VoipNow/Developer-Guide/Apps): API documentation, application development, integrations, extensions, webhooks, and custom app development

## DNS Manager Documentation

[DNS Manager Administrator Guide](https://github.4psa.me/Hubgets/docs/DNSManager/Installation-and-Upgrade/Architecture-Overview): Installation procedures, CLI reference, system architecture, infrastructure requirements, and upgrade paths
[DNS Manager User Guide](https://github.4psa.me/Hubgets/docs/DNSManager/DNS-Manager-User's-Guide/About-DNS-Manager): DNS zone management, record types, domain configuration, interface features, and administrative tasks
[DNS Manager SystemAPI](https://github.4psa.me/Hubgets/docs/DNSManager/SystemAPI/Introduction): Complete API reference with endpoints, authentication, request/response formats, and integration examples

## Support & Resources

[4PSA Official Website](https://www.4psa.com/): Product information, services, company details, and contact information
[Documentation Home](https://github.4psa.me/Hubgets/docs/): Main documentation portal with navigation to all guides and resources