This diagram is our phone system.

Sindria is a business phone system you draw. Boxes and arrows decide how every call is answered, and what you draw is exactly what runs.

Sindria is for people who want no hidden fees, a phone system that just makes sense, and takes care of you when it doesn’t.

$19 a person a month, no minimum, no term.

  • No contract
  • No platform fee
  • Calls included
  • A machine of its own
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Not a screenshot of one. It is read from the system that answers when you ring the number below, and yours works exactly the same way.

919-446-5484This number is answered by the flow below. A person answers at the end.
Call flowA step outlined in green has a call on it right now.current routing · read from the phone system
Triangle Tech’s phones run on Sindria, and this is its call flow right now, read from the phone system that answers them. Change the routing and this page changes.
$19 a person a monthNo minimum and no term. The arithmetic is on the pricing page.
One machine per businessYour phone system runs on a machine of its own.
The drawing is the configurationChange the drawing and the phones change. The public copy shows its shape only.

What is published is its shape: the kinds of steps and how they connect. Names, phone numbers, hours and recordings are left out.

A phone system you run yourself.

Most business phone systems are either powerful and impossible to change, or easy because nothing can be changed. Sindria is the third option: you draw how your calls are answered, change it whenever you want, and see the path each call took. No tickets, no waiting on a technician, no contract.

In the trade’s words: Sindria is a hosted VoIP phone system, a cloud PBX, for a small business or a large one. The auto attendant your callers hear, your ring groups, routing by business hours and voicemail are all steps on one drawing. What each one is called here.

The product

What you can actually do

The call flow

Answer calls your way

Hours, menus, ring groups and voicemail, laid out visually. Change it at four on a Friday without asking anybody. It is the auto attendant, the IVR menu and the call routing of other phone systems, as one picture.

The call flow editor in the console, with the step "Are we open?" selected and its settings beside the canvas.

Call history

See what happened

Your 200 most recent calls, and every change made through the console, including changes made by whoever looks after it for you, with their name on it.

Call history: when each call came in, the number it came from and what happened to it.

People

Add somebody in a minute

A name, a job title, a mobile number, and which extension they answer. Extensions are set up on a page of their own, with a voicemail box if you want one, so somebody new is on a phone the moment they are added.

The Users page: each person, the extension they answer and whether they can sign in.

The assistant

Ask in plain words

Describe the change you want. You are shown exactly what will differ, and nothing is applied until you approve it. It runs on an Anthropic account that you hold, and is billed by them.

A change the assistant suggests, set out step by step, with Do it and No buttons.

Screens from Demo Dental, a demo business, in the console as of 27 September 2026. Select one to see it whole.

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Why Sindria

Six reasons businesses choose it

The drawing is the phone system

What you draw is what runs. There is no second set of settings behind it to fall out of step.

Changed by you, not a technician

New hours, a new menu, a different person to answer: a few minutes of your own time, with no ticket and no waiting.

A price with the arithmetic shown

$19 a person a month. No contract, no minimum and no platform fee, with the sums beside a competitor’s.

Your number is yours

A number from us leaves with you, and we keep it for 90 days so it has time to move. Or run on a carrier account in your own name.

A machine of its own

Your phone system runs on its own server, not on a slice of somebody else’s.

From one person to whole departments

A solo practice with one line, or a company with menus and ring groups: the same product, at the same price a person.

See it for yourself

Ring 919-446-5484 and watch.

It is answered by the call flow at the top of this page. Ring it, then watch the call move through the steps.

Watch the call flow

Pricing

One flat price

$19 per person, per month

No minimum. No term. No platform fee. Calls on the number we give you are included, within fair use. On your own carrier account, what it charges for calls is between you and it.

Sindria, 15 people$285 a month, month to month
RingCentral RingEX Core, 15 people$450 a month, month to month, before taxes and fees

The arithmetic at every size →

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Who it is for

For your business

A phone system you can change yourself

You draw how calls are answered, and the phones do that. Hours, menus, ring groups and voicemail, with no ticket to raise and nobody to wait for.

  • $19 a person a month, with no minimum and no term
  • A machine of its own for your business
  • We set it up with you
How it works Pricing

For IT providers

Look after your customers’ phones

Set a business up on Sindria and stay on hand afterwards. Each customer has a system of its own, and you make the changes yourself.

  • A sign-in of its own for each customer, with every change under your name
  • Your customer pays Sindria directly
  • A 20% commission on what your customers pay
For IT providers

Availability

Available now, coming soon

Now In the product

  • The call flow you draw: hours, menus, ring groups and voicemail
  • Desk phones, and a phone in your web browser
  • Texting from the business number
  • Business hours, holidays and one-off closures
  • Voicemail for each person and for the business
  • Voicemails and recordings as text
  • Call history, and a log of every change with a name on it
  • Adding people and extensions
  • The assistant, on an Anthropic account you hold
  • Every screen on a phone’s web browser
  • Signing up online

Soon On the way

  • The iPhone app on the App Store

Getting started

You can sign up on your own, and it starts with a form.

  1. Fill in the form: your business, your email and the address the phones will be used at.
  2. Confirm your email and add a card. Nothing is charged until your phone system is ordered.
  3. Your phone system is built, with a number on it. From there the call flow is yours to draw, and to change whenever you like.
Get started Sign in

919-446-5484

This number is answered by the call flow at the top of the page.