People without the app can still join the voice 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. They might be a counterparty on an external dealing desk, a contractor in the field, or a vendor calling in for a bridge. You need them in the voice room, and joining has 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. They need no app, no account and no link: a standard phone call lands them in your voice 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
Any phone can dial one number and go straight into your voice 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 takes any phone straight into the voice room, and callers don't need the app.
The number is open to callers and 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