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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.

whoot. team · April 2026 · 5 min read

  • Dedicated phone number per room: UK geographic, national & toll-free
  • Open, PIN-protected, or caller allowlist authentication
  • Inbound callers appear as live participants alongside digital users
  • Inbound minutes share your existing PSTN allowance
Sheet 1Product Launch · April 2026 · 5 min read
TimeFromEntryAction
Apr 2026

whoot. team

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.

Detail

What it does

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
Design

How it is built

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
End of sheet 1Back to the top

One number. Any phone. Straight into the room.

No app required.

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Sheet 2Sign-off
Today

You

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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whoot.

Push. Talk. Heard. Incident and crowd management for venues, events and operations, built on an always-on voice core.

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