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Dial in to any room.
From any phone.

Give every whoot. room a real phone number. PSTN callers dial in and join instantly — no app, no account, no friction. Just a number and a voice in the room.

HomeBlogDial-In Rooms
WT
whoot. team
|
April 2026
|
5 min read
|

April 2026

Not everyone has the app. They can still join the room.

whoot. is built for the teams who live on voice — traders, operations centres, broadcast crews, emergency response units. But the people they need to talk to don't always have the app. A counterparty on an external dealing desk. A contractor in the field. A vendor calling in for a bridge. You need them in the room, and you need it to be as simple as dialling a number.

That's what Dial-In Rooms delivers. Assign a real phone number — UK geographic, national, or toll-free — to any room in your workspace. When someone dials it, they're bridged straight into the voice room alongside everyone else. No app to download, no account to create, no link to click. Just a standard phone call that lands them in your room.

You stay in control of who gets in. Choose whether the number is open to anyone, protected by a PIN, or restricted to a pre-approved caller list. Set limits on how many people can be on at once and how long a call can run. Restrict callers by dialling prefix if you only want calls from specific regions. Every inbound session is logged with full caller identity, so your compliance and operations teams always have a complete picture.

Security is not an afterthought. All voice — including inbound PSTN calls — is encrypted in transit. Every request from the phone network is cryptographically verified before it gets anywhere near your workspace. PIN entry is rate-limited and locked out after repeated failures, so brute-force attempts go nowhere. Inbound minutes flow through your existing PSTN allowance, and every number is provisioned and managed entirely from the operator dashboard.

Everything you need to open the door.

One number. One dial. Any phone, straight into your room.

A Real Number, Per Room

Purchase a dedicated E.164 phone number directly from the dashboard
UK geographic, national, and toll-free numbers supported
Assign any number to any room — and reassign at any time

Flexible Authentication

Open access — callers join the moment their call connects
PIN protection — callers enter a 4–8 digit PIN before bridging
Caller allowlist — only pre-approved numbers can join

Real-Time Presence

Inbound callers appear as live participant pills alongside digital users
No special view needed — they're just another voice in the room
Presence updates in real time as callers join and leave

Secure by Default

All inbound audio is encrypted in transit — no unprotected voice on the wire
Every call is authenticated before it reaches your room
Caller identity verification on every inbound session for a complete audit trail

Usage & Billing Clarity

Inbound minutes draw from your existing PSTN allowance — no double-counting
Numbers billed at £15/month per number, on your existing subscription
Full call detail records in the admin analytics dashboard

Operational Controls

Geo-restriction by dialling prefix — limit callers to specific regions
Configurable concurrent call limits and maximum call duration per number
Kill switch to disable inbound on any number without releasing it

One number. Any phone.
Straight into the room.
No app required.

Security

Open to callers. Closed to threats.

Dial-In Rooms are designed to be as open or as locked-down as your use case demands — but secure by default in every configuration. All voice is encrypted in transit. Every inbound request is verified before it reaches your workspace. PINs are protected against brute-force. Caller identity is captured and retained on every session. And your admin team controls everything from one place, without needing access to any third-party systems.

All voice is end-to-end encrypted — inbound PSTN calls are no exception
Every webhook from the PSTN network is cryptographically verified before processing
PIN brute-force protection — automatic rate-limiting and lockout per caller
Full call detail records retained for compliance and audit review
Numbers provisioned entirely from the operator dashboard — no third-party console access required
Regulatory compliance documentation workflow included for UK and EU numbers
Available on all whoot. plans

More from the blog

Keep reading — here's what else we've been shipping.

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May 2026

Provision at scale. Manage from code.

SCIM 2.0 provisioning and a Management API for programmatic user and room control. Connect your identity provider, automate onboarding, and manage your workspace from your own tools.

SCIM 2.0 — compatible with Okta, Azure AD, JumpCloud, and more
Granular API key scopes for least-privilege access
Tokens shown once at creation — never stored in plaintext
Every API request logged for full audit visibility
Read More
Product Launch
April 2026

whoot. is now on iOS.

Push-to-talk in your pocket. The whoot. iOS app is live on the App Store — ultra-real-time voice, full room access, and instant notifications on the go.

Native SwiftUI with CallKit integration
<150ms end-to-end push-to-talk latency
Full room access & live presence
Instant push notifications
Read More

PSTN dial-in, built in

Give your rooms
a phone number.

Dial-in rooms are available on all plans. Start your 14-day free trial today.

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