Self-Hosted PBX: Run Your Own Business Phone System in 2026
What is a self-hosted PBX, how does it compare with a hosted cloud phone system, and how do you deploy one on AWS, Azure, Google Cloud or your own server?
A self-hosted PBX is a business phone system that runs on a server you control, whether that server sits in your office, in your data center or in your own account at a cloud provider such as AWS, Microsoft Azure or Google Cloud. You get the features of a modern cloud phone system, but your data, call recordings and configuration stay on infrastructure you own.
Self-hosted PBX vs hosted cloud PBX
With a hosted cloud PBX, the vendor runs the servers and you rent extensions. With a self-hosted PBX, you choose where it runs and who can reach it.
- Data control: call recordings, voicemail and call logs stay on your server, which helps with GDPR, HIPAA and data residency rules.
- Cost: you pay for licenses and your own server, instead of a monthly fee per user that grows with every hire.
- Customization: you decide on SIP trunks, codecs, firewall rules, backups and update windows.
- Responsibility: you, or your IT partner, look after the server, security and backups.
Ways to deploy a self-hosted PBX with RingQ
RingQ can be installed in several ways, so you can pick what fits your team:
- Public cloud marketplaces: launch RingQ in a few clicks on AWS, Microsoft Azure, Google Cloud, DigitalOcean or Amazon Lightsail.
- Your own server: install from the RingQ ISO on a KVM server or on dedicated hardware on site.
- Hosted by RingQ: if you would rather not run a server, RingQ can host it for you with the same features.
What a modern self-hosted PBX should include
Old on-premise PBX systems were mostly about desk phones. Today a self-hosted PBX should cover every way your customers reach you:
- Mobile apps for iPhone and Android that ring even when the app is closed, plus desktop and web apps.
- Call queues, IVR menus, call recording, voicemail to email and a live wallboard.
- WhatsApp, Telegram, SMS, Facebook Messenger and website chat in one inbox.
- Video meetings, webinars and browser calling links.
- AI call transcription and an AI receptionist.
- Automatic backups with Time Machine to local disk, FTP, SFTP or Amazon S3.
Keeping a self-hosted PBX secure
Security is the biggest worry with any phone system on the internet. RingQ includes IP restrictions, SIP Guard, PIN-based dialing and country whitelisting, and is certified to ISO 27001:2022. Open only the ports RingQ needs, and for branch offices use the RingQ Secure Tunnel, which carries a whole site's phones over one outbound connection. Read the full RingQ security guide.
Frequently asked questions
What is a self-hosted PBX?
A self-hosted PBX is phone system software that you install on a server you control, either on premises or in your own cloud account, instead of renting it from a hosted provider.
Is a self-hosted PBX cheaper than a cloud phone service?
Often, yes, for teams with more than a handful of users. You pay for licenses and your server rather than a monthly fee per user, and you can choose your own SIP trunk provider.
Can I run a self-hosted PBX on AWS or Azure?
Yes. RingQ is available on the AWS, Azure, Google Cloud and DigitalOcean marketplaces, so you can launch it in your own cloud account.
Do I need a static IP address?
A static public IP is the simplest setup, but RingQ also supports servers behind NAT with the right port forwarding, and branch sites can connect through the Secure Tunnel.
Can I try a self-hosted PBX for free?
Yes. Create a free RingQ trial account and deploy your first instance.