A business phone system you actually own.
Saj Serve is a complete SIP PBX. Browser softphone, trunks, routing, queues, one-command install on your own Linux server. Your calls, your database, your rules.
core is free · unlimited extensions · 5 concurrent external calls · forever
We're new, so there is no logo wall. There is a security page with everything you can verify yourself.
One binary. Our cloud, your VPC, or your rack.
Same software in all three homes. Move between them whenever you want.
We run it.
You still own the data and can leave with it. The export is a documented procedure.
Your VPC runs it.
Your AWS, Azure, GCP or DigitalOcean account. Your network boundary, your storage.
Your rack runs it.
Your building, your jurisdiction. The answer regulated industries keep asking cloud vendors for.
Tell it what you want done. It's the engineer.
Saj Serve ships with an engineer you talk to. It holds your permissions and never more, it confirms before it changes anything, and it points at your own model if you want — nothing leaves your box unless you allow it. It configures and operates the system. It never answers your customers' calls. And it drives the same built-in MCP surface your own AI can use — point any MCP client at your PBX and it gets the same tools, under the same permissions.
simulated conversation · the engineer runs with your permissions, confirms every change, and works against your model or ours
If it's missing from this list, it isn't in the product.
Most "modern" phone platforms deleted this vocabulary from their homepages. We build with it. Everything below is shipping code.
One system. Every customer on it.
If you run phone systems for other people — an MSP, an IT shop, a telco — the multi-tenant machinery is already in the box. This is the platform the white-label program ships on.
Tenant hierarchy, hard isolation.
Every customer is a tenant with row-level isolation enforced in the database, scoped admin, and a wholesale API for the park. Cross-tenant access is regression-tested in CI.
The bill-shock watcher.
Toll fraud is how operators lose real money overnight. Per-tenant spend caps and fraud telemetry are built into the platform and exercised by CI on every merge — not a bolt-on you remember to buy later.
SSH in. No browser required.
A real terminal client ships alongside the web console — inspect and administer the system from the shell you already live in, scriptable one-shots included.
Rate decks carry both your cost and your sell price, least-cost routing picks the trunk, and per-tenant usage rolls up to the wholesale API. Full white-label — your brand down to the softphone — is in the pipeline below. The tenancy underneath it works today.
What's coming. Engineering underway, no promised dates.
The list above is what's real today. This is what's being built. When something ships, it moves up — that's the whole system.
Nothing here is for sale yet. If one of these is the thing you need, tell us which — it genuinely moves the order.
Count what your audio passes through.
Priced per system, not per seat.
Per-seat plans grow your bill every time you hire. Saj Serve is licensed per system, sized by concurrent calls. Your hundredth extension costs exactly what the first one did: nothing.
Unlimited extensions. Always.
No per-user fees, no extension caps, no "fair use" policy waiting at renewal.
Internal calls don't count.
Only external calls count toward your tier. Desk-to-desk is your network and your business.
The whole table is published.
Every tier, every number, on the pricing page. No quote gate in front of a price.
We can't hand you a SOC 2 report for your deployment. It isn't ours to audit.
What we publish instead, with no form in front of it:
The architecture and full data-path. The per-leg encryption facts, stated exactly. The disclosure policy, with a human behind it.
And the argument only self-hosting can make: it runs inside the environment you already had audited.
The export path is never paywalled. Config and data export works on every tier and keeps working if your licence lapses — that path is hard-coded to never gate, like emergency calling.
Who this isn't for.
- You want someone else to be responsible for the servers.
- You need an agentic AI contact centre today.
- Nobody on your team can run a Linux box.
- Your procurement pack requires a Gartner citation.
If that's you, the incumbents are genuinely good at what they do. If it isn't, you're exactly who we built this for.
Own your phone system.
Early access is open to teams who run their own infrastructure. Send your current PBX and your peak concurrent external calls. An engineer answers within one business day.
this server answers to you.