Every employee.
Their own AI.
For the first time, every team member gets a personal AI phone assistant — right inside the browser. Hand the call off to the AI with one click, take it back when you're ready, or transfer to a colleague. You decide who is on the call — you or your AI.
Every employee. One personal AI.
For the first time, every team member gets their own AI phone assistant — with its own voice, its own knowledge, its own calendar. Nobody else on the market offers this.
Hand off. Take back. Transfer.
One click hands the call to the AI. One click takes it back. One click forwards it to a colleague. You stay in control every second — the AI is your backup, not your replacement.
Works everywhere in voiceOne.
Calls ring through even when you're working in the CRM, calendar or dashboard. No call is ever missed because a wrong tab was open.
No PBX to maintain.
voiceOne hosts everything. Updates, SIP registration, encryption, fail-over — you just use the browser.
What the Agent Softphone can do
A complete cloud phone system that brings your AI assistants and your team into one single interface. Every feature has one goal: never miss a call, run conversations without friction, hand over calls without losing quality.
Ready to use in minutes
Roll out in minutes instead of weeks. No IT ticket, no VoIP provider onboarding, no headset driver.
- Browser-based WebRTC — runs in Chrome, Edge, Safari and Firefox. No installation, no admin rights required.
- Dedicated SIP identity per AI agent — generated automatically, stored encrypted, no manual configuration.
- Deep voiceOne integration — no external account, no second login, no duplicated user management.
- Multiple devices in parallel — every open browser tab of the same agent rings in parallel. Whoever picks up first takes the call.
- Works on every voiceOne page — dashboard, contacts, calendar, tickets. Calls reach you everywhere.
Working hand in hand with the AI
The heart of the softphone: seamless handover between the AI assistant and the human agent. The caller never notices the switch.
- Active / inactive toggle — one click decides whether the AI answers immediately or your browser rings first.
- Configurable ring timeout — define how long the softphone rings before the AI takes over.
- Smart fallback — if no one answers: the AI takes over, voicemail, or routing to another agent. No call ends in silence.
- Built-in AI-to-human transfer — the AI recognises when the caller wants a real person and hands over cleanly.
- Cross-engine transfer — switch between Gemini and Ultravox agents without the caller noticing. The target agent's voice is picked up automatically.
Answer and control calls
Call control that feels like a native desktop phone — just inside your browser.
- Full-screen incoming-call overlay with caller info, pulsing animation and large accept/decline buttons.
- Real ringtone — no generic beep, but a professional phone ringtone.
- Native system notifications in macOS Notification Center and Windows Action Center — even when the browser tab is in the background.
- Tab-title flashing for extra attention when multiple tabs are open.
- Click on the notification opens the browser tab and picks up the call directly — one click, done.
- Live call duration in the in-call bar, always visible.
- Mute with one click — the icon shows the current state unambiguously.
- DTMF keypad during the call for IVR navigation and input.
- Hang-up in prominent red — no confusion, no misclick.
Transfers and handover
The full transfer arsenal of a business PBX — plus handovers to AI agents that no traditional system can offer.
- Cold transfer to any phone number — landline or mobile, anywhere.
- Cold transfer to another AI agent — the caller lands directly with the next AI, including the right voice and personality.
- Transfer to another human agent who also uses a voiceOne softphone.
- Conference expansion — add any participant by phone number to the running call, multiple times if needed.
- "Take with me" function — move the call to your mobile phone with one click. The browser leg hangs up cleanly, the conversation continues seamlessly.
Outbound calls
Outbound calls are as seamless as inbound — no extra steps, no confirmations.
- Click-to-call from the integrated dial pad. One click and the call goes out.
- Automatic caller ID — uses the phone number assigned to the agent in voiceOne.
- Instant connection — no second click to answer. Outbound is detected via a custom header and accepted automatically.
- Runs on your own SIP trunks — Twilio, Sipgate, Vialine, Telekom, Zaluma — whatever you've already configured in voiceOne.
History & context
Everything you need to know about the last call — directly inside the softphone, not hidden in a separate tab.
- Call history inside the softphone — the last 50 calls of the agent at a glance.
- Filters for all / incoming / outgoing / missed — instantly see what needs attention.
- Colour coding — green for incoming, blue for outgoing, red for missed. No guesswork.
- Caller name from the CRM, if the contact is known — directly in the history, no extra click.
- AI-generated conversation summary displayed inline — know instantly what the call was about.
- Direct callback with one click from the history.
Audio quality and connection stability
A phone has to be reliable. That's why we built the things you never have time to fix during a busy day in a way that simply works.
Audio settings
Full control over microphone, speakers and ringtone — with live preview, so you never have to adjust blindly.
- Microphone selection from all system audio inputs — headset, built-in mic, USB device.
- Speaker selection in Chrome/Edge — e.g. headset for calls, Bluetooth speaker for the ringtone.
- Live microphone test with level meter (green–yellow–red). You immediately see whether the mic works.
- Ringtone on/off — one click for silence when you need it.
- Ringtone volume slider with live preview while you drag.
- Preview playback with start/stop — set the volume calmly, no need to wait for a real call.
- Persistent audio settings — set it once, instantly restored after every reload.
Stability and connection quality
A dropped WebSocket must never mean a lost call. The softphone is built to heal itself.
- Automatic reconnection on WebSocket loss with exponential backoff. No manual action required.
- Visible offline indicator when the connection is lost — including a "Reconnect" button.
- Visibility watchdog — the moment you return to the tab, the SIP registration is re-checked.
- Transparent status display in the sidebar: connecting / connected / error. No hidden states.
Who is the Agent Softphone built for?
For every business that needs to handle calls professionally — but has had enough of classic phone systems.
Doctor and dental practices
Front-desk staff pick up calls directly at the reception PC, the AI catches peak loads, callbacks happen with one click from the call history.
Craftsmen and tradespeople
The AI handles the line while the team is on site. In the office or in the evening, the softphone takes over — without callback chaos.
Law firms and tax advisors
Pre-qualification by the AI, one-click routing to the right department. GDPR-compliant with servers in Germany.
Real estate agents
"Take with me" to your mobile when you leave for a viewing. No call is ever lost, no matter where you are.
Customer service & support
Multiple agents reachable in parallel, smart routing between AI and humans, full CRM context on every call.
SMBs with remote teams
One unified phone for every location. Employees simply log in — the phone system comes with them.
Ready to move your phone into the browser?
Try the Agent Softphone for free — included in every voiceOne trial.